Title: Competency 2 - Competency Exam - Form A- Requires Respondus LockDown Browser
Course: Fundamentals of Networking Technologies (13658) > Section: Competency Modules

This is the actual exam to determine if you have mastered the competency.  It must be taken in a testing center. There are 88 questions in this exam.

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: 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: 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: ____________________ 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: A wave with which of the following frequencies would have the longest wavelength?
- 10 MHz
- 100 MHz
- 1 GHz
- 100 GHz
A: 10 MHz
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: __________ 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 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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 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: 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: 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: 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: 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: 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 ____ 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: 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: A node in ____________ communications recognizes that it should be receiving data by looking at the time on the clock.
Correct Answer(s):
A: synchronous
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: ____ 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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 ____ 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: 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: To function as a server, a computer must be running a(n) ____________________.
Correct Answer(s):
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) ____________________.
Correct Answer(s):
A: WAN (wide area network) / wide area network / WAN
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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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 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: 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: 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: 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: 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: 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: 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 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: 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: ____ 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: 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: 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