Title: Competency 2 - Competency Exam - MASTER
Course: Fundamentals of Networking Technologies (13658)

This is the MASTER Test with all questions for Competency 2.

Q: The strength of an electrical signal is directly proportional to its frequency.
- True
- False
A: False
If right: Objective 2.1
If wrong: Objective 2.1

Q: A part of a network that does not contain end nodes is called a(n) __________ segment.
- populated
- unpopulated
- empty
- nodeless
A: unpopulated
If right: Objective 2.1
If wrong: Objective 2.1

Q: Modulation can be used to make a signal conform to a specific pathway.
- True
- False
A: True
If right: Objective 2.1
If wrong: Objective 2.1

Q: Ethernet is an example of a baseband system found on many LANs.
- True
- False
A: True
If right: Objective 2.1
If wrong: Objective 2.1

Q: Latency occurs when a signal traveling on one wire or cable infringes on the signal traveling over an adjacent wire or cable.
- True
- False
A: False
If right: Objective 2.1
If wrong: Objective 2.1

Q: The maximum distance a signal can travel and still be interpreted accurately is equal to a segment’s maximum length.
- True
- False
A: True
If right: Objective 2.1
If wrong: Objective 2.1

Q: The distance between corresponding points on a wave’s cycle is called its ____.
- amplitude
- frequency
- phase
- wavelength
A: wavelength
If right: Objective 2.1
If wrong: Objective 2.1

Q: A digital signal composed of a pulse of positive voltage represents a(n) ____.
- 0
- 1
- 4
- 8
A: 1
If right: Objective 2.1
If wrong: Objective 2.1

Q: The byte 00001110 means ____ on a digital network.
- 3
- 6
- 14
- 30
A: 14
If right: Objective 2.1
If wrong: Objective 2.1

Q: In modulation, a simple wave called a(n) ____ wave, is combined with another analog signal to produce a unique signal that gets transmitted from one node to another.
- carrier
- data
- information
- FM
A: carrier
If right: Objective 2.1
If wrong: Objective 2.1

Q: When signals are free to travel in both directions over a medium simultaneously, the transmission is considered ____.
- simplex
- multiplex
- half-duplex
- full-duplex
A: full-duplex
If right: Objective 2.1
If wrong: Objective 2.1

Q: The data transmission characteristic most frequently discussed and analyzed by networking professionals is ____.
- noise
- scalability
- throughput
- cost
A: throughput
If right: Objective 2.1
If wrong: Objective 2.1

Q: The most significant factor in choosing a transmission method is its ____.
- noise
- attenuation
- throughput
- latency
A: throughput
If right: Objective 2.1
If wrong: Objective 2.1

Q: The use of 1s and 0s to represent information is characteristic of a(n) ____________________ system.
A: binary
If right: Objective 2.1
If wrong: Objective 2.1

Q: ____________________ is a term used by networking professionals to describe the nondata information that must accompany data for a signal to be properly routed and interpreted by the network.
A: Overhead
If right: Objective 2.1
If wrong: Objective 2.1

Q: ____________________ are the pieces of hardware that connect the wire to the network device.
A: Connectors
If right: Objective 2.1
If wrong: Objective 2.1

Q: Which of the following decimal numbers corresponds to the binary number 00001001?
- 3
- 5
- 7
- 9 (Objective 2.1)
A: 9
If right: Objective 2.1
If wrong: Objective 2.1

Q: A wave with which of the following frequencies would have the longest wavelength?
- 10 MHz
- 100 MHz
- 1 GHz
- 100 GHz (Objective 2.1)
A: 10 MHz
If right: Objective 2.1
If wrong: Objective 2.1

Q: Ethernet relies on which of the following transmission types?
- simplex
- half-simplex
- half-duplex
- full-duplex
A: full-duplex
If right: Objective 2.1
If wrong: Objective 2.1

Q: Which of these cables cannot carry electrical power?
- Cat5 RJ-45
- Cat5e RJ-45
- Cat6 RJ-45
- Multi-mode
A: Multi-mode
If right: Objective 2.1
If wrong: Objective 2.1

Q: Which of the following is the least susceptible to EMI?
- STP
- Fiber-optic cable
- Coaxial cable
- UTP
A: Fiber-optic cable
If right: Objective 2.1
If wrong: Objective 2.1

Q: Which cable is the most resistant to wire-tapping?
- UTP
- Fiber-Optic
- STP
- Coaxial
A: Fiber-Optic
If right: Objective 2.1
If wrong: Objective 2.1

Q: __________ is a transmission form in which the signal monopolizes the entire wire.
- broadcast
- multicast
- broadband
- baseband
A: baseband
If right: Objective 2.1
If wrong: Objective 2.1

Q: __________ is a transmission in which signals are modulated as to use different frequency ranges.
- broadcast
- multicast
- broadband
- baseband
A: broadband
If right: Objective 2.1
If wrong: Objective 2.1

Q: ___________ is a transmission that involves one transmitter and multiple, undefined receivers.
- broadcast
- multicast
- broadband
- baseband
A: broadcast
If right: Objective 2.1
If wrong: Objective 2.1

Q: ___________ is a transmission that issues signals to multiple, defined recipients.
- broadcast
- multicast
- broadband
- baseband
A: multicast
If right: Objective 2.1
If wrong: Objective 2.1

Q: A part of a network that does not contain end nodes is called a(n) __________ segment.
- populated
- unpopulated
- empty
- nodeless
A: unpopulated
If right: Objective 2.1
If wrong: Objective 2.1

Q: A part of a network that does contain end nodes is called a(n) __________ segment.
- populated
- unpopulated
- full
- nodeful
A: populated
If right: Objective 2.1
If wrong: Objective 2.1

Q: The more twists per foot in a pair of wires, the more resistant the pair will be to ____.
- throughput
- attenuation
- cross talk
- latency
A: cross talk
If right: Objective 2.2
If wrong: Objective 2.2

Q: Modern LANs use ____ or higher wiring.
- Cat 3
- Cat 5
- RG-6
- RG-59
A: Cat 5
If right: Objective 2.2
If wrong: Objective 2.2

Q: ____________________ cabling consists of one or more insulated wire pairs encased in a plastic sheath.
A: UTP (unshielded twisted pair) / Unshielded twisted pair / UTP
If right: Objective 2.2
If wrong: Objective 2.2

Q: What part of a cable protects it against environmental damage?
- Sheath
- Braiding
- Plenum
- Cladding
A: Sheath
If right: Objective 2.2
If wrong: Objective 2.2

Q: You are helping to install a cable broadband system in your friend’s home. She wants to bring the signal from where the service provider’s cable enters the house to a room on another floor, which means you have to attach a new cable to the existing one. What type of cable should this be?
- RG-6
- RG-8
- RG-58
- RG-59
A: RG-6
If right: Objective 2.2
If wrong: Objective 2.2

Q: Which of the following network transmission media offers the highest potential throughput over the longest distances?
- MMF
- SMF
- UTP
- STP
A: SMF
If right: Objective 2.2
If wrong: Objective 2.2

Q: Fiber-optic cable networks can span much longer distances than copper-based networks before requiring repeaters because:
- they use wavelength division multiplexing.
- their signals never require amplification.
- they are resistant to noise such as EMI.
- their signals do not suffer degradation no matter how small the cable’s bend radius.
A: they are resistant to noise such as EMI.
If right: Objective 2.2
If wrong: Objective 2.2

Q: What is the purpose of cladding in a fiber-optic cable?
- It reflects the signal back to the core.
- It protects the inner core from damage.
- It shields the signal from EMI.
- It concentrates the signal and helps keep it from fading.
A: It reflects the signal back to the core.
If right: Objective 2.2
If wrong: Objective 2.2

Q: Which of the following is a potential drawback to using fiber-optic cable for LANs?
- It is expensive.
- It cannot handle high-bandwidth transmissions.
- It can carry transmissions using only TCP/IP.
- It is not yet an accepted standard for high-speed networking.
A: It is expensive.
If right: Objective 2.2
If wrong: Objective 2.2

Q: A technician is troubleshooting a UTP cable that has been suspected of having problems due to EMI. Which of the following cables should the technician use without adding new equipment to the network?
- Singlemode fiber
- STP
- Plenum
- Multimode fiber
A: STP
If right: Objective 2.2
If wrong: Objective 2.2

Q: A cable standard that includes a fire-retardant jacket is:
- coaxial cable
- fiber cable
- plenum cable
- UTP cable
A: plenum cable
If right: Objective 2.2
If wrong: Objective 2.2

Q: Your 100Base-T network is wired following the TIA/EIA 568B standard. As you make your own patch cable, which wires do you crimp into pins 1 and 2 of the RJ-45 connector?
- White with green stripe and green
- White with brown stripe and brown
- White with blue stripe and blue
- White with red stripe and red
- White with orange stripe and orange
A: White with orange stripe and orange
If right: Objective 2.2
If wrong: Objective 2.2

Q: Which one of the following media is most resistant to EMI?
- Coaxial cable
- UTP cable
- STP cable
- Fiber-optic cable
- Microwave
A: Fiber-optic cable
If right: Objective 2.2
If wrong: Objective 2.2

Q: Fiber-optic cable is normally used for
- Desk-top connections
- LAN segments
- Backbones
- None of these
A: Backbones
If right: Objective 2.2
If wrong: Objective 2.2

Q: The maximum cable length for a Thicknet network is
- 100 meters
- 200 meters
- 330 meters
- 500 meters
- 1000 meters
- 1500 meters
A: 500 meters
If right: Objective 2.2
If wrong: Objective 2.2

Q: The highest bandwidth and level of security is provided by
- Coaxial cable
- Fiber-optic cable
- STP
- UDP
A: Fiber-optic cable
If right: Objective 2.2
If wrong: Objective 2.2

Q: Which cable would you use to connect a server 1 kilometer away without the use of a repeater?
- Fiber optic
- UTP
- STP
- Cat5
- Cat7
A: Fiber optic
If right: Objective 2.2
If wrong: Objective 2.2

Q: Serial refers to a style of data transmission in which the pulses that represent bits follow one another along a ____ transmission line.
- long
- short
- secondary
- single
A: single
If right: Objective 2.3
If wrong: Objective 2.3

Q: Which connector is used in RS-232 transmissions?
- DB-25
- ST
- BNC
- Cat-5
A: DB-25
If right: Objective 2.3
If wrong: Objective 2.3

Q: The serial interface on the back of the connectivity device is often labeled “____.”
- Connector
- Port
- Board
- Console
A: Console
If right: Objective 2.3
If wrong: Objective 2.3

Q: In which of the following network links might you use MT-RJ connectors?
- A coaxial connection between a cable modem and a server
- A UTP connection between a workstation and a hub
- A wireless connection between a handheld computer and a desktop computer
- A fiber-optic connection between a server and router
A: A fiber-optic connection between a server and router
If right: Objective 2.3
If wrong: Objective 2.3

Q: Every user at one location on your company’s WAN is unable to reach the Internet. Your colleague on the network management team suspects a critical router is unable to connect to the network. Because you’re in the building affected by the outage, she asks you to troubleshoot the router. You confirm that the router is not responding to any requests over the network. Which of the following do you use to connect directly from your laptop to the router to diagnose it?
- An RG-6 cable
- An RG-58 cable
- A serial cable
- An SMF cable
A: A serial cable
If right: Objective 2.3
If wrong: Objective 2.3

Q: How many wire pairs can a single 110 block terminate?
- 55
- 110
- 200
- It depends on the type of 110 block.
A: It depends on the type of 110 block.
If right: Objective 2.3
If wrong: Objective 2.3

Q: Which of the following connector types are MOST commonly associated with phone jacks?
- RJ-11
- ST
- RJ-45
- SC
A: RJ-11
If right: Objective 2.3
If wrong: Objective 2.3

Q: Which connection is used on a Thinnet network?
- BNC T connector
- BNC barrel connector
- RJ-45
- N-type connector
A: BNC T connector
If right: Objective 2.3
If wrong: Objective 2.3

Q: Which device is used to prevent a signal from bouncing on a Thinnet network?
- BNC- barrel connector
- RJ-45
- BNC T connector
- BNC terminator
A: BNC terminator
If right: Objective 2.3
If wrong: Objective 2.3

Q: You have a workstation over 105 meters from hub.  Your using cat 3 cabling.  You are unable to connect to the network server.

Required objective:  connect to the server

Optional objective: Faster connection.

Proposed solution, replace the NIC with a 100BaseFX NIC
- This meets the optional objective only
- This does not meet the required objective
- This meets only the required objective and not the optional one
- The meets both the required and optional objectives.
A: This does not meet the required objective
If right: Objective 2.3
If wrong: Objective 2.3

Q: In the case of connecting two WLANs, access points could be as far as ____ feet apart.
- 500
- 800
- 1000
- 1200
A: 1000
If right: Objective 2.4
If wrong: Objective 2.4

Q: A unique characteristic of the 802.11 data frame is its ____ field.
- Frame Control
- Sequence Control
- Data
- Duration
A: Sequence Control
If right: Objective 2.4
If wrong: Objective 2.4

Q: The average geographic range for an 802.11a antenna is ____ meters.
- 20
- 100
- 330
- 600
A: 20
If right: Objective 2.4
If wrong: Objective 2.4

Q: ____ is the least popular WLAN standard.
- 802.11a
- 802.11b
- 802.11g
- 802.11n
A: 802.11a
If right: Objective 2.4
If wrong: Objective 2.4

Q: An 802.11g antenna has a geographic range of ____ meters.
- 20
- 100
- 300
- 330
A: 100
If right: Objective 2.4
If wrong: Objective 2.4

Q: ____ may use either the 2.4-GHz or 5-GHz frequency range.
- 802.11a
- 802.11b
- 802.11g
- 802.11n
A: 802.11n
If right: Objective 2.4
If wrong: Objective 2.4

Q: ____ is an 802.11n feature that allows two adjacent 20-MHz channels to be combined to make a 40-MHz channel.
- Channel bonding
- Channel aggregation
- Frame aggregation
- Frame bonding
A: Channel bonding
If right: Objective 2.4
If wrong: Objective 2.4

Q: ____ is an 802.11n network feature allowing the combination of multiple frames into one larger frame.
- Channel bonding
- Channel aggregation
- Frame aggregation
- Frame bonding
A: Frame aggregation
If right: Objective 2.4
If wrong: Objective 2.4

Q: 802.11b and g signals can extend a maximum of ____________________ feet and still deliver data reliably.
A: 330
If right: Objective 2.4
If wrong: Objective 2.4

Q: What frequency band is used by 802.11b, 802.11g, and 802.11n?
- 1.5 GHz
- 2.4 GHz
- 5 GHz
- 11 GHz
A: 2.4 GHz
If right: Objective 2.4
If wrong: Objective 2.4

Q: Which two of the following techniques help to reduce overhead in 802.11n wireless transmission?
- CSMA/CA
- Asynchronous communication
- Frame aggregation
- Spread-spectrum signaling
- Channel bonding
A: Frame aggregation; Channel bonding
If right: Objective 2.4
If wrong: Objective 2.4

Q: The frequency of 802.11b and 802.11g is which of the following?
- 2.4GHz
- 900MHz
- 5GHz
- 1800MHz
A: 2.4GHz
If right: Objective 2.4
If wrong: Objective 2.4

Q: Which of the following 802.11 channels operates above 5GHz?
- a
- b
- g
- i
A: a
If right: Objective 2.4
If wrong: Objective 2.4

Q: Your network manager has purchased a dozen new access points and all are configured to use the  new  802.11n  standard  in  the  2.4-GHz  band.  These  access  points  will  be  capable  of communicating with older access points that run which of the following standards? (Choose all that apply.)
- 802.11g
- 802.11a
- 802.11b
- Bluetooth
- None of the above
A: 802.11g; 802.11b
If right: Objective 2.4
If wrong: Objective 2.4

Q: You have purchased an access point capable of exchanging data via the 802.11b or 802.11g wireless standard. According to these standards, what is the maximum distance, in meters, from the access point that wireless stations can travel and still reliably exchange data with the access point?
- 20
- 50
- 75
- 100
- 400
A: 100
If right: Objective 2.4
If wrong: Objective 2.4

Q: Which of the following wireless networking standards can reliably transmit data the farthest?
- Bluetooth
- 802.11a
- 802.11b
- 802.11c
- 802.11n
A: 802.11n
If right: Objective 2.4
If wrong: Objective 2.4

Q: Which of the following makes use of channel bonding to maximize throughput?
- 802.11a
- 802.11b
- 802.11g
- 802.11n
- WiMAX
A: 802.11n
If right: Objective 2.4
If wrong: Objective 2.4

Q: Which 802.11 standard uses the 2.4GHz or 5GHz bands and has a maximum throughput of 600Mbps?
- 802.11a
- 802.11ac
- 802.11ad
- 802.11b
- 802.11g
- 802.11n
A: 802.11n
If right: Objective 2.4
If wrong: Objective 2.4

Q: Which 802.11 standard uses the 2.4GHz band and operates at either 11Mbps or 54Mbps?
- 802.11a
- 802.11b
- 802.11g
- 802.11n
A: 802.11g
If right: Objective 2.4
If wrong: Objective 2.4

Q: Of the following, which are capable of operating at 54Mbps?  (Choose all that apply)
- 802.11a
- 802.11b
- 802.11g
- 802.11n
A: 802.11a; 802.11g; 802.11n
If right: Objective 2.4
If wrong: Objective 2.4

Q: In the United States how many channels are available in the 2.4GHz band for use by 802.11 devices.
- 3
- 6
- 11
- 14
- 20
A: 11
If right: Objective 2.4
If wrong: Objective 2.4

Q: Which 802.11 standard uses the 2.4GHz band and has a maximum throughput of 11Mbps?
- 802.11a
- 802.11b
- 802.11g
- 802.11n
A: 802.11b
If right: Objective 2.4
If wrong: Objective 2.4

Q: 802.11a networks use which topology type?
- Mesh
- Start
- Wireless
- Ring
- Bus
A: Wireless
If right: Objective 2.4
If wrong: Objective 2.4

Q: Which 802.11 standard uses only the 5GHz band and can operate at 11Mbps?
- 802.11a
- 802.11b
- 802.11g
- 802.11n
A: 802.11a
If right: Objective 2.4
If wrong: Objective 2.4

Q: Which of the following are capable of operating at 11Mbps? (Choose all that apply)
- 802.11a
- 802.11b
- 802.11g
- 802.11n
A: 802.11a; 802.11b; 802.11g; 802.11n
If right: Objective 2.4
If wrong: Objective 2.4

Q: Which 802.11 standard uses the 5GHz band and operates at a maximum of 54Mbps?
- 802.11a
- 802.11b
- 802.11g
- 802.11n
A: 802.11a
If right: Objective 2.4
If wrong: Objective 2.4

Q: A customer is considering upgrading his office to wireless.  He is concerned because his phone system used 900Mhz cordless handsets and headsets.  To overcome any issues related to his concern, which wireless specification would you recommend.
- 802.11a
- 802.11b
- 802.11g
- 802.11n
- Any of the above
A: Any of the above
If right: Objective 2.4
If wrong: Objective 2.4

Q: ____ is a technology used with fiber-optic cable, which enables one fiber-optic connection to carry multiple light signals simultaneously.
- Statistical multiplexing
- WDM (wavelength division multiplexing)
- TDM (time division multiplexing)
- FDM (frequency division multiplexing)
A: WDM (wavelength division multiplexing)
If right: Objective 2.5
If wrong: Objective 2.5

Q: The most popular method for connecting nodes on a network is circuit switching.
- True
- False
A: False
If right: Objective 2.5
If wrong: Objective 2.5

Q: In packet switching, when packets reach their destination node, the node ____ them based on their control information.
- disassembles
- deletes
- reassembles
- separates
A: reassembles
If right: Objective 2.5
If wrong: Objective 2.5

Q: ____________________ is a component of a network’s logical topology that determines how connections are created between nodes.
A: Switching
If right: Objective 2.5
If wrong: Objective 2.5

Q: Dial-up ISDN does not convert a computer’s digital signals to analog before transmitting them over the PSTN.
- True
- False
A: True
If right: Objective 2.5
If wrong: Objective 2.5

Q: ATM is a WAN technology that functions in the Data Link layer.
- True
- False
A: True
If right: Objective 2.5
If wrong: Objective 2.5

Q: SONET specifies framing and multiplexing techniques at the Physical layer.
- True
- False
A: True
If right: Objective 2.5
If wrong: Objective 2.5

Q: The ____ encompasses the entire telephone system, from the wires that enter homes and businesses to the network centers that connect different regions of a country.
- SLIP
- POTS
- PPP
- PSTN
A: PSTN
If right: Objective 2.5
If wrong: Objective 2.5

Q: A(n) ____ is the place where a telephone company terminates lines and switches calls between different locations.
- CO
- EO
- DO
- TO
A: CO
If right: Objective 2.5
If wrong: Objective 2.5

Q: A ____ connection is one in which a user connects her computer, via a modem, to a distant network and stays connected for a finite period of time.
- remote
- direct
- dial-up
- virtual
A: dial-up
If right: Objective 2.5
If wrong: Objective 2.5

Q: The portion of the PSTN that connects any residence or business to the nearest CO is known as the ____.
- demarcation point
- NIU (Network Interface Unit)
- local loop
- central office
A: local loop
If right: Objective 2.5
If wrong: Objective 2.5

Q: ____ means that a telephone company connects residential users to its network with fiber-optic cable.
- OLT
- FITL
- PON
- FTTH
A: FTTH
If right: Objective 2.5
If wrong: Objective 2.5

Q: ____ is an updated, digital version of X.25 that also relies on packet switching.
- DSL
- ISDN
- Frame relay
- ATM
A: Frame relay
If right: Objective 2.5
If wrong: Objective 2.5

Q: In a process called ____, two 64-Kbps ISDN B channels can be combined to achieve an effective throughput of 128 Kbps.
- slicing
- linking
- merging
- bonding
A: bonding
If right: Objective 2.5
If wrong: Objective 2.5

Q: A ____ converts digital signals into analog signals for use with ISDN phones and other analog devices.
- terminal adapter
- DSLAM
- smart jack
- terminator
A: terminal adapter
If right: Objective 2.5
If wrong: Objective 2.5

Q: ISDN PRI uses ____ B channels and one 64-Kbps D channel.
- 10
- 12
- 23
- 32
A: 23
If right: Objective 2.5
If wrong: Objective 2.5

Q: A ____ aggregates multiple DSL subscriber lines and connects them to the carrier’s CO.
- terminal adapter
- DSLAM
- smart jack
- terminator
A: DSLAM
If right: Objective 2.5
If wrong: Objective 2.5

Q: What sets ATM apart from Ethernet is its ____ size.
- channel
- frame
- variable packet
- fixed packet
A: fixed packet
If right: Objective 2.5
If wrong: Objective 2.5

Q: SONET’s extraordinary ____ results from its use of a double-ring topology over fiber-optic cable.
- throughput
- low cost
- fault tolerance
- latency
A: fault tolerance
If right: Objective 2.5
If wrong: Objective 2.5

Q: The data rate of a particular SONET ring is indicated by its ____, a rating that is internationally recognized by networking professionals and standards organizations.
- OC (Optical Carrier) level
- CIR (committed information rate)
- BRI (Basic Rate Interface)
- DS0 (digital signal, level 0)
A: OC (Optical Carrier) level
If right: Objective 2.5
If wrong: Objective 2.5

Q: ____________________ are connections between network nodes that, although based on potentially disparate physical links, logically appear to be direct, dedicated links between those nodes.
A: Virtual circuits
If right: Objective 2.5
If wrong: Objective 2.5

Q: A(n) ____________________ uses TDM (time division multiplexing) over two wire to divide a single channel into multiple channels.
A: T-carrier
If right: Objective 2.5
If wrong: Objective 2.5

Q: ____________________ encapsulates incoming Ethernet or token ring frames, then converts them into ATM cells for transmission over an ATM network.
A: LANE (LAN Emulation) / LAN Emulation / LANE
If right: Objective 2.5
If wrong: Objective 2.5

Q: A node in ____________ communications recognizes that it should be receiving data by looking at the time on the clock.
A: synchronous
If right: Objective 2.5
If wrong: Objective 2.5

Q: A(n) ____________________ combines individual SONET signals on the transmitting end, and another multiplexer separates combined signals on the receiving end.
A: multiplexer / SONET multiplexer
If right: Objective 2.5
If wrong: Objective 2.5

Q: Broadband cable requires many subscribers to share the same local line, thus raising concerns about ____ and actual (versus theoretical) throughput.
- access
- costs
- noise
- security
A: security
If right: Objective 2.5
If wrong: Objective 2.5

Q: The speed of a T-carrier depends on its ____ level.
- signal
- hierarchy
- channel
- traffic
A: signal
If right: Objective 2.5
If wrong: Objective 2.5

Q: WiMAX is defined by the IEEE 802.11 standard.
- True
- False
A: False
If right: Objective 2.5
If wrong: Objective 2.5

Q: Most satellites circle the Earth ____  miles above the equator in a geosynchronous orbit.
- 100
- 1240
- 6,000
- 22,300
A: 22,300
If right: Objective 2.5
If wrong: Objective 2.5

Q: ____ satellites are the type used by the most popular satellite data service providers.
- Transponder
- Medium earth orbiting
- Low earth orbiting
- Geosynchronous earth orbiting
A: Geosynchronous earth orbiting
If right: Objective 2.5
If wrong: Objective 2.5

Q: Which satellites transmit and receive signals in the 12 to 18 GHz band?
- L-
- S-
- Ku-
- Ka-
A: Ku-
If right: Objective 2.5
If wrong: Objective 2.5

Q: Clients are able to exchange signals with satellites as long as they have a ____ path.
- view
- line-of-sight
- proprietary
- directional
A: line-of-sight
If right: Objective 2.5
If wrong: Objective 2.5

Q: To establish a satellite Internet connection, each subscriber must have a ____.
- dish antenna
- line-of-sight antenna
- dish pathway
- source pathway
A: dish antenna
If right: Objective 2.5
If wrong: Objective 2.5

Q: ____________________ means that satellites orbit the Earth at the same rate as the Earth turns.
A: Geosynchronous earth orbit (GEO) / Geosynchronous earth orbit / GEO
If right: Objective 2.5
If wrong: Objective 2.5

Q: In wavelength division multiplexing, two modulated signals are guaranteed to differ in what characteristic?
- Throughput
- Color
- Amplitude
- Phase
A: Color
If right: Objective 2.5
If wrong: Objective 2.5

Q: Why is packet switching more efficient than circuit switching?
- In packet switching, packets are synchronized according to a timing mechanism in the switch.
- In packet switching, two communicating nodes establish a channel first, then begin transmitting, thus ensuring a reliable connection and eliminating the need to retransmit.
- In packet switching, small pieces of data are sent to an intermediate node and reassembled before being transmitted, en masse, to the destination node.
- In packet switching, packets can take the quickest route between nodes and arrive independently of when other packets in their data stream arrive.
A: In packet switching, packets can take the quickest route between nodes and arrive independently of when other packets in their data stream arrive.
If right: Objective 2.5
If wrong: Objective 2.5

Q: Which of the following network technologies does not use circuit switching?
- ATM
- Ethernet
- T-l
- ISDN
A: Ethernet
If right: Objective 2.5
If wrong: Objective 2.5

Q: Which of the following elements of the PSTN is most likely capable of transmitting only analog signals?
- Central office
- Local loop
- CSU/DSU
- Remote switching facility
A: Local loop
If right: Objective 2.5
If wrong: Objective 2.5

Q: A customer calls your ISP's technical support line, complaining that his connection to the Internet usually goes as fast as 128 Kbps, but today it is only reaching 64 Kbps. He adds that he has tried dialing up three different times with the same result. What type of connection does this customer have?
- PSTN dial-up
- DSL
- ISDN
- T1
A: ISDN
If right: Objective 2.5
If wrong: Objective 2.5

Q: What is the purpose of ISDN's D channel?
- To carry call session information
- To carry error checking information
- To enable time division multiplexing
- To carry data
A: To carry call session information
If right: Objective 2.5
If wrong: Objective 2.5

Q: Suppose you work for a bank and are leasing a frame relay connection to link an automatic teller machine located in a rural grocery store with your bank's headquarters. Which of the following circuits would be the best option, given the type of use this automatic teller machine will experience?
- DLC
- PVC
- SVC
- HLC
A: SVC
If right: Objective 2.5
If wrong: Objective 2.5

Q: On an ISDN connection, what device separates the voice signal from the data signals at the customer premises?
- Network termination
- Terminal equipment
- Multiplexer
- Terminal adapter
A: Terminal adapter
If right: Objective 2.5
If wrong: Objective 2.5

Q: Which of the following WAN technologies operates at Layer 3 of the OSI model?
- ATM
- DSL
- SONET
- None of the above
A: None of the above
If right: Objective 2.5
If wrong: Objective 2.5

Q: You work for a regional common carrier and have been asked to design a passive optical network that will bring high speed Internet access to a new neighborhood in a nearby suburb. The area served by the network will bring fiber-optic cable to as many as 45 households. At least how many ports on the carrier’s OLT should you expect to configure?
- 1
- 2
- 3
- 4
A: 2
If right: Objective 2.5
If wrong: Objective 2.5

Q: You offer your networking expertise to a small nonprofit organization. The three employees each have a desktop computer and want to share the single broadband cable Internet connection that comes to their office. You donate a router you have sitting around to make this sharing possible. Where on your network should you install the router?
- Attached to one of the end workstations
- Between the cable modem and the cable drop
- Attached to a server that's connected to the cable drop
- Between the cable modem and the workstations
A: Between the cable modem and the workstations
If right: Objective 2.5
If wrong: Objective 2.5

Q: How does ATM differ from every other WAN technology described in this chapter?
- It does not use packet switching.
- It requires fiber-optic media.
- It does not provide error detection or correction.
- It uses fixed-sized cells to carry data.
A: It uses fixed-sized cells to carry data.
If right: Objective 2.5
If wrong: Objective 2.5

Q: You work for an Internet service provider that wants to lease a T3 over a SONET ring. What is the minimum Optical Carrier level that the SONET ring must have to support the bandwidth of a T3?
- OC1
- OC3
- OC12
- OC24
A: OC1
If right: Objective 2.5
If wrong: Objective 2.5

Q: Which two of the following are asymmetrical versions of DSL?
- SDSL
- ADSL
- HDSL
- VDSL
- FDSL
A: ADSL; VDSL
If right: Objective 2.5
If wrong: Objective 2.5

Q: What technique does T1 technology use to transmit multiple signals over a single telephone line?
- Amplitude modulation
- Wave division multiplexing
- Time division multiplexing
- Frequency modulation
A: Time division multiplexing
If right: Objective 2.5
If wrong: Objective 2.5

Q: Where on the PSTN would you most likely find a DSLAM?
- In a remote switching facility
- At the demarc
- In a border router
- In a CSU/DSU
A: In a remote switching facility
If right: Objective 2.5
If wrong: Objective 2.5

Q: The science museum where you work determines that it needs an Internet connection capable of transmitting and receiving data at 12 Mbps at any time. Which of the following T-carrier solutions would you advise?
- A T1
- A T3
- Ten T1s
- Ten T3s
A: Ten T1s
If right: Objective 2.5
If wrong: Objective 2.5

Q: Your company has decided to order ADSL from its local telecommunications carrier. You call the carrier and find out that your office is located 17,000 feet from the nearest CO. Given ADSL's potential throughput and your distance from the CO, what is the maximum downstream throughput you can realistically expect to achieve through this connection?
- 16 Mbps
- 8 Mbps
- 2 Mbps
- 200 Kbps
A: 2 Mbps
If right: Objective 2.5
If wrong: Objective 2.5

Q: What part of a SONET network allows it to be self-healing?
- Its double-ring topology
- Its use of error correction protocols
- Its use of fiber-optic cable
- Its independence from local carriers' switching facilities
A: Its double-ring topology
If right: Objective 2.5
If wrong: Objective 2.5

Q: Which of the following may limit a DSL connection's capacity?
- The number of nodes connected to the incoming DSL line
- The distance from the carrier's switching facility to the ISP
- The existence of more than one copper wire phone line at the customer's location
- The distance from the customer to the carrier's switching facility
A: The distance from the customer to the carrier's switching facility
If right: Objective 2.5
If wrong: Objective 2.5

Q: Which of the following wireless technologies boasts the highest maximum theoretical throughput?
- LTE
- HSPA+
- 802.11g
- 802.11n
A: LTE
If right: Objective 2.5
If wrong: Objective 2.5

Q: What part of a cellular network manages handoff?
- The client
- The base station
- The MSC
- The central office
A: The base station
If right: Objective 2.5
If wrong: Objective 2.5

Q: Suppose you work for a telecommunications carrier who is looking into providing
WiMAX in a suburb of a large city. A colleague suggests that your company reserve
licensed frequencies from the FCC for your service. Why?
- Licensed frequencies will suffer less interference than unlicensed frequencies.
- Licensed frequencies allow users to roam farther than unlicensed frequencies.
- Licensed frequencies can use multiple areas of the wireless spectrum at once, thus
increasing potential throughput.
- Licensed frequencies require less expensive equipment to transmit and receive than unlicensed frequencies.
A: Licensed frequencies will suffer less interference than unlicensed frequencies.
If right: Objective 2.5
If wrong: Objective 2.5

Q: As the network manager for a small business, you have been asked to evaluate high-speed, packet-switched wireless data services that your company’s users can use at their desks, in their cars, and at their homes within your metropolitan area. Which two of the following meet those criteria, and are therefore candidates for evaluation?
- 802.11g
- 802.11n
- WiMAX 2
- HSPA+
- LTE
A: WiMAX 2; LTE
If right: Objective 2.5
If wrong: Objective 2.5

Q: Which of the following types of satellites is used to provide satellite data services?
- Geosynchronous orbit
- Low Earth orbit
- Medium Earth orbit
- High Earth orbit
A: Geosynchronous orbit
If right: Objective 2.5
If wrong: Objective 2.5

Q: Which of the following WAN technology types provides the FASTEST speeds?
- OC3
- SDSL
- ADSL
- T3
A: OC3
If right: Objective 2.5
If wrong: Objective 2.5

Q: Your organization has just ordered its first T1 connection to the Internet. Prior to that, your organization relied on a DSL connection. Which of the following devices must you now have that your DSL connection didn’t require?
- Modem
- CSU/DSU
- Switch
- Hub
- Router
A: CSU/DSU
If right: Objective 2.5
If wrong: Objective 2.5

Q: Which of the following wireless standards provides an entirely IP-based, packet-switched network for both voice and data transmissions? (Choose two.)
- LTE
- 802.16e
- 802.16m
- HSPA+
- 802.11n
A: LTE; 802.16m
If right: Objective 2.5
If wrong: Objective 2.5

Q: You have been asked to provide a connectivity solution for a small, locally owned franchise of a national restaurant chain. The owners of the franchise want to send their confidential sales figures, personnel information, and inventory updates to the national office, which is 1200 miles away, once per week. Their total monthly data transfer will amount to almost 50 megabytes. The franchise owners do not plan to use the connection for any other purposes, and they do not have any IT staff to support the connection. Also, they do not want to spend more than $100 per month, nor more than $500 to install their connection. Considering cost, speed, reliability, technical expertise, distance, security, and the nature of their environment, what is the best solution for this client?
- A T1 that connects to the national office via a router at the local franchise and a router at the national office and that uses a VPN to ensure the security of the data en route
- A PSTN connection to a local Internet service provider that uses PPP to dial in to an access server and then sends data via e-mail to the national office
- A DSL connection to a local telephone and Internet service provider that uses IPSec to encrypt the data before it is sent to the national office’s file server over the Internet
- A private SONET ring to connect with two local telephone and Internet service providers that connects to the national office’s T3 and sends data via TCP/IP over ATM
- An ISDN connection to a local Internet service provider that allows employees to copy files to the national office’s anonymous FTP site
A: A DSL connection to a local telephone and Internet service provider that uses IPSec to encrypt the data before it is sent to the national office’s file server over the Internet
If right: Objective 2.5
If wrong: Objective 2.5

Q: Suppose your WAN contained a segment that relied on the l0GBase-EW standard. Which of the following transmission technologies might it use?
- SONET
- Satellite
- Broadband cable
- DSL
- ISDN
A: SONET
If right: Objective 2.5
If wrong: Objective 2.5

Q: Ethernet and ATM both specify Data Link layer framing techniques. How do they differ?
- Ethernet uses CRC fields to confirm the validity of the frame, whereas ATM uses no error detection.
- Ethernet uses variably sized packets, whereas ATM uses fixed-sized cells.
- Ethernet uses synchronous transmission, whereas ATM uses asynchronous transmission.
- Ethernet uses frame headers, whereas ATM does not.
- Ethernet offers no guarantee of timely delivery, whereas ATM ensures that packets are delivered within 10 ms.
A: Ethernet uses variably sized packets, whereas ATM uses fixed-sized cells.
If right: Objective 2.5
If wrong: Objective 2.5

Q: Which of the following are capable of 622Mbps of bandwidth?
- ATM
- Dial-up
- ISDN
- Frame Relay
A: ATM
If right: Objective 2.5
If wrong: Objective 2.5

Q: Which of the following statements about SONET are correct? (Choose three)
- SONET cannot handle video-on-demand.
- OC1 relates to a speed of 56.44 Mbps
- SONET is a high-speed, fiber-option data transmission system.
- SONET can only be implement over copper
- OC1 relates to a speed of 51.84 Mbps
- SONET can be used for global high-speed data services.
A: SONET is a high-speed, fiber-option data transmission system.; OC1 relates to a speed of 51.84 Mbps; SONET can be used for global high-speed data services.
If right: Objective 2.5
If wrong: Objective 2.5

Q: When comparing circuit switching to packet switching, which of the following is true? (Choose three)
- Packet switching is more flexible and determines alternate routing.
- Circuit switching defines a static path from one end node to the other.
- Packet switching has a mesh of paths between the source and destination
- Circuit switching is slower with less overhead
- Circuit switching has more overhead
- Circuit switching is faster although it has more overhead
A: Packet switching is more flexible and determines alternate routing.; Circuit switching defines a static path from one end node to the other.; Packet switching has a mesh of paths between the source and destination
If right: Objective 2.5
If wrong: Objective 2.5

Q: The speed of a T1 line is
- 1.544 Mbps
- 56 Kbps
- 44.736 Mbps
- 128 Kbps
A: 1.544 Mbps
If right: Objective 2.5
If wrong: Objective 2.5

Q: Which standard is designed to provide voice, video and data transmissions over a digital telephone network?
- X.25
- ISDN
- X.400
- X.550
A: ISDN
If right: Objective 2.5
If wrong: Objective 2.5

Q: Which relationship between ISDN and PSTN is true?
- PSTN is faster
- ISDN is cheaper
- ISDN is faster
- They have the same cost and speed
A: ISDN is faster
If right: Objective 2.5
If wrong: Objective 2.5

Q: The simplest form of a network is a client/server network.
- True
- False
A: False
If right: Objective 2.6
If wrong: Objective 2.6

Q: Very large peer-to-peer networks have emerged to take advantage of the Internet.
- True
- False
A: True
If right: Objective 2.6
If wrong: Objective 2.6

Q: Clients on a client/server network share their resources directly with each other.
- True
- False
A: False
If right: Objective 2.6
If wrong: Objective 2.6

Q: Which statement describes an advantage of networks?
- Networks require decentralized management.
- Isolating network devices decreases costs.
- Isolating network devices allows implementation of the sneakernet file sharing method.
- Networks enable multiple users to share resources.
A: Networks enable multiple users to share resources.
If right: Objective 2.6
If wrong: Objective 2.6

Q: Which network model ensures that no computer on the network has more authority than another?
- client/server
- stand alone
- peer-to-peer
- distributed
A: peer-to-peer
If right: Objective 2.6
If wrong: Objective 2.6

Q: A common way of sharing resources on a peer-to-peer network is by modifying the ____ controls using the computer’s operating system.
- file-serving
- file-sharing
- resource-sharing
- resource-monitoring
A: file-sharing
If right: Objective 2.6
If wrong: Objective 2.6

Q: A ____ facilitates communication and resource sharing between other computers on the network.
- servlet
- workstation
- personal computer
- server
A: server
If right: Objective 2.6
If wrong: Objective 2.6

Q: ____ networks are the most popular type of network for medium- and large-scale organizations.
- Client/server
- Peer-to-peer
- Stand-alone
- Stationary
A: Client/server
If right: Objective 2.6
If wrong: Objective 2.6

Q: A ____ network is confined to a relatively small space.
- NAN
- MAN
- WAN
- LAN
A: LAN
If right: Objective 2.6
If wrong: Objective 2.6

Q: Often, separate LANs are interconnected and rely on several ____ running many different applications and managing resources other than data.
- workstations
- servers
- clients
- stand-alone computers
A: servers
If right: Objective 2.6
If wrong: Objective 2.6

Q: A ____ network connects clients and servers from multiple buildings.
- NAN
- MAN
- WAN
- TAN
A: MAN
If right: Objective 2.6
If wrong: Objective 2.6

Q: A ____ is a specialized device that allows multiple networks or multiple parts of one network to connect and exchange data.
- segment
- host
- node
- connectivity device
A: connectivity device
If right: Objective 2.6
If wrong: Objective 2.6

Q: Which network topology is the most common?
- ring
- star
- hybrid
- Ethernet
A: star
If right: Objective 2.6
If wrong: Objective 2.6

Q: A(n) ____________________ is a computer that is not connected to other computers and that uses software applications and data stored on its local disks.
A: stand-alone computer
If right: Objective 2.6
If wrong: Objective 2.6

Q: In a(n) ____________________ network, every computer can communicate directly with every other computer.
A: peer-to-peer
If right: Objective 2.6
If wrong: Objective 2.6

Q: To function as a server, a computer must be running a(n) ____________________.
A: NOS (network operating system) / network operating system / NOS
If right: Objective 2.6
If wrong: Objective 2.6

Q: A network that connects two or more geographically distinct LANs or MANs is called a(n) ____________________.
A: WAN (wide area network) / wide area network / WAN
If right: Objective 2.6
If wrong: Objective 2.6

Q: ____________________ transmission involves one transmitter and multiple receivers.
A: Point-to-multipoint
If right: Objective 2.6
If wrong: Objective 2.6

Q: Modern Ethernet networks are based on the star topology.
- True
- False
A: True
If right: Objective 2.6
If wrong: Objective 2.6

Q: A physical topology ____.
- specifies device types
- depicts a network in broad scope
- specifies connectivity methods
- specifies addressing schemes
A: depicts a network in broad scope
If right: Objective 2.6
If wrong: Objective 2.6

Q: Without ____, a bus network would suffer from signal bounce.
- hubs
- repeaters
- terminators
- jamming
A: terminators
If right: Objective 2.6
If wrong: Objective 2.6

Q: In a ring network, each workstation acts as a(n) ____ for the transmission.
- repeater
- amplifier
- terminator
- manager
A: repeater
If right: Objective 2.6
If wrong: Objective 2.6

Q: A complex combination of topologies is known as a ____ topology.
- mixed
- hybrid
- compound
- mulitpart
A: hybrid
If right: Objective 2.6
If wrong: Objective 2.6

Q: The most common logical topologies are ____ and ring.
- bus
- star
- wired
- hybrid
A: bus
If right: Objective 2.6
If wrong: Objective 2.6

Q: In a star topology, a single connection failure will halt all traffic between all sites.
- True
- False
A: False
If right: Objective 2.6
If wrong: Objective 2.6

Q: WANs typically send data over ____ available communications networks.
- privately
- publicly
- individually
- serially
A: publicly
If right: Objective 2.6
If wrong: Objective 2.6

Q: The individual geographic locations connected by a WAN are known as ____.
- WAN sites
- WAN links
- network service providers
- central offices
A: WAN sites
If right: Objective 2.6
If wrong: Objective 2.6

Q: On most modern WANs, a ring topology relies on ____ rings to carry data.
- flexible
- open
- serial
- redundant
A: redundant
If right: Objective 2.6
If wrong: Objective 2.6

Q: ____ WANs are the most fault-tolerant type of WAN because they provide multiple routes for data to follow between any two points.
- Bus
- Star
- Mesh
- Tiered
A: Mesh
If right: Objective 2.6
If wrong: Objective 2.6

Q: Which of the following is an advantage of using a client/server network over using a peer-to-peer network?
- A client/server network is simpler to set up.
- A client/server network allows resources to be managed centrally.
- A client/server network does not require a network operating system.
- A client/server network is less expensive to set up.
A: A client/server network allows resources to be managed centrally.
If right: Objective 2.6
If wrong: Objective 2.6

Q: What is the primary function of a file server on a client/server network?
- It monitors how many users are logged on to a WAN.
- It manages access and use of shared applications and data.
- It prevents unauthorized remote users from connecting to a LAN.
- It routes traffic between two or more LANs.
A: It manages access and use of shared applications and data.
If right: Objective 2.6
If wrong: Objective 2.6

Q: Suppose you wanted to share documents among several computers in your household in a peer-to-peer fashion. You could do that by properly configuring which of the following types of software?
- Word-processing software
- Remote authentication software
- Mail client software
- Operating system software
A: Operating system software
If right: Objective 2.6
If wrong: Objective 2.6

Q: On a client/server network, clients and servers usually require what to communicate?
- A connectivity device
- A Web site
- A remote access server
- A mail server
A: A connectivity device
If right: Objective 2.6
If wrong: Objective 2.6

Q: Your colleague, in describing the benefits of a client/server network, mentions that it’s more scalable than a peer-to-peer network. What does she mean by this?
- The client/server network can be more easily expanded.
- The client/server network is simpler to set up.
- The client/server network can be run on free software.
- The client/server network allows more users to log on at one time.
A: The client/server network can be more easily expanded.
If right: Objective 2.6
If wrong: Objective 2.6

Q: In which of the following environments would a WAN be most appropriate?
- A large data center in which each employee’s access is centrally controlled
- A global hotel chain connecting its reservation desks to a central call center
- A home office connecting its personal computers between the den, living room, and bedroom
- A local newspaper connecting to a global news agency's Web site
A: A global hotel chain connecting its reservation desks to a central call center
If right: Objective 2.6
If wrong: Objective 2.6

Q: How can a server distinguish between many clients on a network?
- Each client is identified by a unique network address.
- Each client regularly transmits a signal that indicates its network location and unique client characteristics.
- Each client has a different electromagnetic characteristic to its signal, similar to differences in human voices.
- Each client uses uniquely modified versions of the same network protocol.
A: Each client is identified by a unique network address.
If right: Objective 2.6
If wrong: Objective 2.6

Q: The physical layout of nodes on a network is known as the network's:
- Topology
- Schematic
- Formation
- Grid
A: Topology
If right: Objective 2.6
If wrong: Objective 2.6

Q: Which of the following network topologies is most common on today's networks?
- Ring
- Fan
- Star
- Bus
A: Star
If right: Objective 2.6
If wrong: Objective 2.6

Q: Which of the following topologies is susceptible to signal bounce?
- Partial-mesh
- Bus
- Ring
- Full-mesh
A: Bus
If right: Objective 2.6
If wrong: Objective 2.6

Q: Which of the following WAN topologies comes with the highest availability and the greatest cost?
- Bus
- Tiered
- Partial mesh
- Full mesh
A: Full mesh
If right: Objective 2.6
If wrong: Objective 2.6

Q: Which of the following network topologies describes a network where packets of data are transmitted from one computer to another in a circular fashion?
- Ring
- Mesh
- Bus
- Star
A: Ring
If right: Objective 2.6
If wrong: Objective 2.6

Q: Which of the following QoS techniques enables packet-switched technologies to travel over traditionally circuit-switched connections?
- ATM
- SONET
- MPLS
- Frame relay
- Clustering
A: MPLS
If right: Objective 2.6
If wrong: Objective 2.6

Q: What is a common language or common rules that computers use to communicate with each other is called?
- Architecture
- Standard
- Protocol
- Topology
A: Protocol
If right: Objective 2.6
If wrong: Objective 2.6

Q: Which of the following types of networks provides security and centralized management?
- Peer-to-Peer
- Client-Server
- Neither provide security
- Both provide security and centralized management
A: Client-Server
If right: Objective 2.6
If wrong: Objective 2.6

Q: Which of the following topologies is the easiest to reconfigure?
- Bus
- Ring
- Star
A: Star
If right: Objective 2.6
If wrong: Objective 2.6

Q: Which of the following types of networks requires the user to remember multiple passwords to access shared resources?
- Peer-to-peer
- Client-server
- Neither require it
- Both require ti
A: Peer-to-peer
If right: Objective 2.6
If wrong: Objective 2.6

Q: Which of the following types of networks is the easiest and cheapest to setup?
- Distributed
- Peer-to-peer
- Client server
- All have the same ease and cost
A: Peer-to-peer
If right: Objective 2.6
If wrong: Objective 2.6

Q: What are the disadvantages of a bus topology (Choose two)
- The cabling is expensive
- The cabling is difficult to troubleshoot
- The cabling is difficult to terminate
- A break in the cabling will bring down the network.
- The cabling is easily damaged.
A: The cabling is difficult to troubleshoot; A break in the cabling will bring down the network.
If right: Objective 2.6
If wrong: Objective 2.6

Q: When a computer can both access and share resources on a network it is called a:
- Repeater
- Client
- Server
- peer
A: peer
If right: Objective 2.6
If wrong: Objective 2.6

Q: One of the most common transmission flaws affecting data signals is ____.
- noise
- attenuation
- throughput
- latency
A: noise
If right: Objective 2.7
If wrong: Objective 2.7

Q: Many network problems can be traced to poor cable ____ techniques.
- manufacturing
- engineering
- installation
- planning
A: installation
If right: Objective 2.7
If wrong: Objective 2.7

Q: Some software errors point to a physical connectivity problem.
- True
- False
A: True
If right: Objective 2.7
If wrong: Objective 2.7

Q: Logical connectivity problems often prove more difficult to isolate and resolve than physical connectivity problems.
- True
- False
A: True
If right: Objective 2.7
If wrong: Objective 2.7

Q: What is different about the method used to boost a digital signal’s strength, compared with the method of boosting an analog signal’s strength?
- A digital signal requires an amplifier, which increases the strength of both the noise and the signal, and an analog signal requires a repeater, which retransmits the signal in its original form.
- A digital signal requires a repeater, which increases the strength of both the signal and the noise it has accumulated, and an analog signal requires an amplifier, which retransmits the signal in its original form.
- A digital signal requires a repeater, which retransmits the signal in its original form, and an analog signal requires an amplifier, which increases the strength of both the signal and the noise it has accumulated.
- A digital signal requires an amplifier, which introduces noise into the signal, and an analog signal requires a repeater, which retransmits the signal in its original form.
A: A digital signal requires a repeater, which retransmits the signal in its original form, and an analog signal requires an amplifier, which increases the strength of both the signal and the noise it has accumulated.
If right: Objective 2.7
If wrong: Objective 2.7

Q: With everything else being equal, a network using which of the following UTP types will suffer the most cross talk?
- Cat 3
- Cat 5
- Cat 6a
- Cat 7
A: Cat 3
If right: Objective 2.7
If wrong: Objective 2.7

Q: Which of the following is not a source of EMI?
- Power line
- Megaphone
- Microwave oven
- Fluorescent lights
A: Megaphone
If right: Objective 2.7
If wrong: Objective 2.7

Q: Which of the following symptoms may point to a faulty switch port?
- A group of users consistently experiences delays on the network only at 8:00 a.m. on weekdays.
- A user can save files to a network drive, but receives errors when trying to save files on his hard disk.
- Twelve users in one department complain that they cannot log on to the network.
- A user can send e-mail but can't pick it up.
A: Twelve users in one department complain that they cannot log on to the network.
If right: Objective 2.7
If wrong: Objective 2.7

Q: The effects of scattering, reflecting and diffracting on a wireless signal are referred to collectively as ___________.
- Reduction
- Lost
- Diffusion
- Fading
A: Fading
If right: Objective 2.7
If wrong: Objective 2.7

Q: When a wireless signal encounters an object with dimensions that are greater than its wavelength which condition occurs?
- Attenuation
- Diffraction
- Reflection
- Scattering
A: Reflection
If right: Objective 2.7
If wrong: Objective 2.7

Q: When a wireless signal encounters an object with dimensions that are smaller than its wavelength which condition occurs?
- Attenuation
- Diffraction
- Reflection
- Scattering
A: Scattering
If right: Objective 2.7
If wrong: Objective 2.7

Q: When a wireless signal encounters an object with sharp edges which condition occurs?
- Attenuation
- Diffraction
- Reflection
- Scattering
A: Diffraction
If right: Objective 2.7
If wrong: Objective 2.7

Q: A network’s access method is its method of controlling how network nodes access the communications channel.
- True
- False
A: True
If right: Objective 2.8
If wrong: Objective 2.8

Q: All Ethernet networks, independent of their speed or frame type, use an access method called ____.
- CSMA/CA
- CSMA/AC
- CSMA/AD
- CSMA/CD
A: CSMA/CD
If right: Objective 2.8
If wrong: Objective 2.8

Q: A ____ occurs when two transmissions interfere with each other.
- jam
- collision
- carrier sense
- multiple access event
A: collision
If right: Objective 2.8
If wrong: Objective 2.8

Q: 1000Base-T is a standard for achieving throughputs ____ times faster than Fast Ethernet over copper cable.
- 2
- 5
- 10
- 100
A: 10
If right: Objective 2.8
If wrong: Objective 2.8

Q: The 10GBase-T standard is considered a breakthrough for transmitting 10 Gbps over ____ medium.
- coaxial
- twisted pair
- fiber
- atmosphere
A: twisted pair
If right: Objective 2.8
If wrong: Objective 2.8

Q: The most common 1-Gigabit Ethernet standard in use today is ____.
- 1000Base-T
- 1000Base-SX
- 10GBase-SR
- 1000Base-LX
A: 1000Base-LX
If right: Objective 2.8
If wrong: Objective 2.8

Q: The 10-gigabit fiber optic standard with the shortest segment length is ____.
- 10GBase-T
- 10GBase-SR
- 10GBase-LR
- 10GBase-ER
A: 10GBase-SR
If right: Objective 2.8
If wrong: Objective 2.8

Q: In the 10GBase-LR standard, the L stands for ____.
- long reach
- LAN
- long ring
- little ring
A: long reach
If right: Objective 2.8
If wrong: Objective 2.8

Q: Given their long-distance capabilities, 10GBase-ER and 10GBase-EW are best suited for use on ____.
- VANs
- MANs
- LANs
- WANs
A: WANs
If right: Objective 2.8
If wrong: Objective 2.8

Q: 1000Base-SX has a maximum throughput of ____.
- 1 Gbps
- 10 Gbps
- 100 Gbps
- 1000 Gbps
A: 1 Gbps
If right: Objective 2.8
If wrong: Objective 2.8

Q: As part of CSMA/CD, a process known as ____________________ allows the NIC issue a special 32-bit sequence that indicates to the rest of the network nodes that its previous transmission was faulty and that those data frames are invalid.
A: jamming
If right: Objective 2.8
If wrong: Objective 2.8

Q: What type of topology is required for use with a 100Base-TX network?
- Bus
- Star
- Mesh
- Ring
A: Star
If right: Objective 2.8
If wrong: Objective 2.8

Q: Your school’s network has outgrown its designated telco rooms, so you decide to house a few routers in an old janitor’s closet temporarily. However, since the closet has no power outlets, you will have to supply the routers power over the network. If you’re lucky, your LAN already uses which of the following Ethernet standards that will allow you to do that?
- 100Base-FX
- 1000Base-T
- 1000Base-LX
- 10GBase-LR
A: 1000Base-T
If right: Objective 2.8
If wrong: Objective 2.8

Q: What is the minimum cabling standard required for 10GBase-T Ethernet?
- MMF
- Cat 3
- Cat 5
- Cat 6
A: Cat 6
If right: Objective 2.8
If wrong: Objective 2.8

Q: What happens in CSMA/CD when a node detects that its data has suffered a collision?
- It immediately retransmits the data.
- It signals to the other nodes that it is about to retransmit the data, and then does so.
- It waits for a random period of time before checking the network for activity, and then retransmits the data.
- It signals to the network that its data was damaged in a collision, waits a brief period of time before checking the network for activity, and then retransmits the data.
A: It signals to the network that its data was damaged in a collision, waits a brief period of time before checking the network for activity, and then retransmits the data.
If right: Objective 2.8
If wrong: Objective 2.8

Q: You are designing a 100Base-T network to connect groups of workstations in two different offices in your building. The offices are approximately 250 meters apart. If you only use repeating devices to connect the workstation groups, how many hubs will you need?
- One
- Two
- Three
- Four
A: Two
If right: Objective 2.8
If wrong: Objective 2.8

Q: On a 10Base-T network, which of the following best describes how the wires of a UTP cable are used to transmit and receive information?
- One wire pair handles data transmission, while another wire pair handles data reception.
- One wire in one pair handles data transmission, while the other wire in the same pair handles data reception.
- Three wires of two wire pairs handle both data transmission and reception, while the fourth wire acts as a ground.
- All four wires of two wire pairs handle both data transmission and reception.
A: One wire pair handles data transmission, while another wire pair handles data reception.
If right: Objective 2.8
If wrong: Objective 2.8

Q: What technique is used to achieve 1-Gbps throughput over a Cat 5 cable?
- All four wire pairs are used for both transmission and reception.
- The cable is encased in a special conduit to prevent signal degradation due to noise.
- Signals are issued as pulses of light, rather than pulses of electric current.
- Data is encapsulated by a unique type of frame that allows rapid data compression.
A: All four wire pairs are used for both transmission and reception.
If right: Objective 2.8
If wrong: Objective 2.8

Q: Which of the following Ethernet standards is specially encoded for transmission over WANs using SONET technology?
- 100Base-T
- 10GBase-ER
- 100Base-FX
- 10GBase-SW

TYPE:MA
A: 10GBase-SW

TYPE:MA
If right: Objective 2.8
If wrong: Objective 2.8

Q: In which of the following examples do the workstations necessarily share a collision domain?
- Two computers connected to the same hub
- Two computers connected to the same switch
- Two computers connected to the same router
- Two computers connected to the same access server
A: Two computers connected to the same hub
If right: Objective 2.8
If wrong: Objective 2.8

Q: Which of the following is the type of 10-Gigabit Ethernet that can carry signals the farthest, nearly 25 miles?
- 10GBase-T
- 10GBase-ER
- 10GBase-LR
- 10GBase-SR

TYPE:MA
A: 10GBase-ER
If right: Objective 2.8
If wrong: Objective 2.8

Q: The maximum segment length for a 1000Base-SX network depends on which two of the following?
- Voltage
- Modal Bandwidth
- Frame type
- Priority labeling
- Fiber core diameter
A: Modal Bandwidth; Fiber core diameter
If right: Objective 2.8
If wrong: Objective 2.8

Q: Which of the following 802.11 transmission requirements contributes to its inefficiency?
- Before it can associate, a station must listen for an access point’s beacon on every
channel within its frequency range.
- A source node must regularly ping the access point to ensure it is still available for transmitting data to the rest of the stations.
- A destination node must issue an acknowledgment for every packet that is received intact.
- Before transmitting, a source node must check to ensure the access point has not
changed its SSID.
A: A destination node must issue an acknowledgment for every packet that is received intact.
If right: Objective 2.8
If wrong: Objective 2.8

Q: In the 802.11 standard, IEEE specifies what type of access method?
- Beacon passing
- Demand priority
- CSMA/CD
- CSMA/CA
A: CSMA/CA
If right: Objective 2.8
If wrong: Objective 2.8

Q: Which of the following allows the LONGEST distance using single-mode fiber?
- 10GBaseSR
- 10GBaseER
- 10GBaseSW
- 10GBaseLW
A: 10GBaseER
If right: Objective 2.8
If wrong: Objective 2.8

Q: Which of the following 10-gigabit technologies has the longest maximum segment length?
- 10Gbase-SR
- 10GBase-ER
- 10GBase-T
- 10GBase-LW
- 10GBase-SW
A: 10GBase-ER
If right: Objective 2.8
If wrong: Objective 2.8

Q: What is another name for Fast Ethernet using two pair of wire in a CAT5 cable?
- UTP
- Optic
- 100BaseTx
- 10Base2
A: 100BaseTx
If right: Objective 2.8
If wrong: Objective 2.8

Q: Which of the following uses two pairs of wires  and can transmit at 100Mbps?
- 10BaseT
- 100BaseTX
- 100BaseLX
- 10BaseFx
A: 100BaseTX
If right: Objective 2.8
If wrong: Objective 2.8

Q: Which access method is used by 802.11b?
- Demand priority
- Demand polling
- CSMA/CD
- CSMA/CA
A: CSMA/CA
If right: Objective 2.8
If wrong: Objective 2.8

Q: Ethernet networks use which access method?
- Token Ring
- Token Bus
- CSMA/CD
- CSMA/CA
A: CSMA/CD
If right: Objective 2.8
If wrong: Objective 2.8

Q: The segment length for 100BasetT is
- 100 meters
- 200 meters
- 330 meters
- 500 meters
- 1000 meters
A: 100 meters
If right: Objective 2.8
If wrong: Objective 2.8

Q: Which of the following access methods senses whether or not the cable is free before sending data?
- CSMA/CD
- Demand Priority
- Polling
- CSMA/CA
A: CSMA/CD
If right: Objective 2.8
If wrong: Objective 2.8

Q: Which IEEE standard defines CSMA/CD?
- 802.1
- 802.2
- 802.3
- 802.11
A: 802.3
If right: Objective 2.8
If wrong: Objective 2.8

Q: Which of the following will support a 10,000 Mbps connection over fiber optio cable with a maximum segment length of 10 kilometers?
- 10GBASE-T
- 10GBASE-LR
- 10GBASE-SR
- 1000BASE-LX
- 1000BASE-SX
A: 10GBASE-LR
If right: Objective 2.8
If wrong: Objective 2.8

Q: The maximum cable length for a 100BASE-T network is
- 10 meters
- 20 meters
- 60 meters
- 100 meters
- 200 meters
- 1500 meters
A: 100 meters
If right: Objective 2.8
If wrong: Objective 2.8

Q: Which of the following supports a 10,000 Mbps connection over fiber with a maximum segment length of 82 meters?
- 1000BASE-SX
- 10GBASE-SR
- 1000BASE-CX
- 10GBASE-LR
A: 10GBASE-SR
If right: Objective 2.8
If wrong: Objective 2.8

Q: Which of the following supports a 10,000 Mbps connection over fiber with a maximum segment length of 40 kilometers?
- 1000BASE-SX
- 10GBASE-ER
- 1000BASE-CX
- 1000BASE-LX
- 10GBASE-SR
A: 10GBASE-ER
If right: Objective 2.8
If wrong: Objective 2.8

Q: ____ describes a popular serial data transmission method.
- EIA/TIA Commercial Building Wiring Standard
- EIA/TIA RS-232 (Recommended Standard 232)
- EIA/TIA 568A standard
- EIA/TIA 568BA standard
A: EIA/TIA RS-232 (Recommended Standard 232)
If right: Objective 2.9
If wrong: Objective 2.9

Q: Which term describes the hardware that makes up the enterprise-wide cabling system?
- wiring board
- patch panel
- network diagram
- cable plant
A: cable plant
If right: Objective 2.9
If wrong: Objective 2.9

Q: Which standard is also known as structured cabling?
- TIA/EIA Commercial Building Wiring Standard
- TIA/EIA RS-232 (Recommended Standard 232)
- TIA/EIA 568A Standard
- TIA/EIA 568BA Standard
A: TIA/EIA Commercial Building Wiring Standard
If right: Objective 2.9
If wrong: Objective 2.9

Q: The points where circuits interconnect with other circuits is known as ____.
- entrance facilities
- cross-connect facilities
- IDF (intermediate distribution frame)
- telecommunications closet
A: cross-connect facilities
If right: Objective 2.9
If wrong: Objective 2.9

Q: Which term identifies a room containing connectivity for groups of workstations in its area?
- MDF (main distribution frame)
- entrance facilities
- work area
- telecommunications closet
A: telecommunications closet
If right: Objective 2.9
If wrong: Objective 2.9

Q: ____ describes wiring that connects workstations to the closest telecommunications closet.
- Backbone wiring
- Horizontal wiring
- Work area
- Simple wiring
A: Horizontal wiring
If right: Objective 2.9
If wrong: Objective 2.9

Q: At the customer’s demarcation point, either inside or outside the building, RJ-48 connectors terminate in a ____.
- terminal adapter
- smart jack
- CSU/DSU
- switch
A: smart jack
If right: Objective 2.9
If wrong: Objective 2.9

Q: In what part of a structured cabling system would you find users’ desktop computers?
- Telco room
- MDF
- IDF
- Work area
A: Work area
If right: Objective 2.9
If wrong: Objective 2.9

Q: What is the maximum distance specified in the structured cabling standard for a horizontal wiring subsystem?
- 10 m
- 90 m
- 100 m
- 200 m
A: 100 m
If right: Objective 2.9
If wrong: Objective 2.9

Q: Your campuswide WAN is experiencing slow Internet response times. When you call your Internet service provider to ask if they can troubleshoot the problem from their end, they warn you that their responsibilities end at the demarc. What do they mean?
- They will not diagnose problems beyond your organization’s MDF.
- They will not diagnose problems beyond your organization’s entrance facilities.
- They will not diagnose problems beyond your organization’s IDF.
- They will not diagnose problems beyond your organization’s telco rooms.
A: They will not diagnose problems beyond your organization’s entrance facilities.
If right: Objective 2.9
If wrong: Objective 2.9

Q: You're troubleshooting a problem with a T1 connection between your business and the service provider’s facility. The T1 connection intermittently goes down. When you call the service provider for assistance, they say that they will only engage one of their service technicians after you have verified that all of your customer premises equipment is in working order. Given that requirement, which of the following do you not examine for faults?
- The CSU/DSU interface card where the T1 terminates.
- The router that contains the CSU/DSU interface card.
- The RJ-48 connectors in your smart jack.
- The cable that enters the smart jack from outside your building.
A: The cable that enters the smart jack from outside your building.
If right: Objective 2.9
If wrong: Objective 2.9

Q: A business has expanded to additional floors in the building. The expansion only calls for switches and patch panels to be installed. Which of the following would the network manager need to locate?
- MDF
- Demarc
- Smart jack
- IDF
A: IDF
If right: Objective 2.9
If wrong: Objective 2.9

Q: Where do you terminate Cat 6a cables in the cross-connect facility to complete a circuit?
- Patch panel
- Punch-down block
- MDF
- Smart jack
- CSU/DSU
A: Punch-down block
If right: Objective 2.9
If wrong: Objective 2.9

Q: If an organization follows structured cabling standards, where would its demarc be located?
- Entrance facilities
- MDF
- IDF
- Cross-connect facilities
- Backbone
A: Entrance facilities
If right: Objective 2.9
If wrong: Objective 2.9

Q: The point where one company’s communication network is connected to a network owned by another company is called the
- Connection-point
- Demarc
- Endpoint
- Connect
A: Demarc
If right: Objective 2.9
If wrong: Objective 2.9

Q: Which of the following would use Cat5e connectors?
- 66 block
- Patch panel
- 110 block
- All of the above
- None of the above
A: Patch panel
If right: Objective 2.9
If wrong: Objective 2.9