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

This is an alternate version (Form B) of the actual exam to determine if you have mastered the competency.  It must be taken in a testing center.

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: 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: 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: 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: ____________________ 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: Which of these cables cannot carry electrical power?
- Cat5 RJ-45
- Cat5e RJ-45
- Cat6 RJ-45
- Multi-mode (Objective 2.2)
A: Multi-mode
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: ____________________ 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: 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: 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: 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: 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 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: 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: 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 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 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: 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 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: ____ 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: ____ 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: 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: 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: 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: ____________________ 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(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: 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: 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: ____________________ 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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 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: 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: 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: 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: 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: Modern Ethernet networks are based on the star topology.
- True
- False
A: True
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: 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: ____ 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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 smaller than its wavelength which condition occurs?
- Attenuation
- Diffraction
- Reflection
- Scattering
A: Scattering
If right: Objective 2.7
If wrong: Objective 2.7

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: 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: 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: 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 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: 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: 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 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: 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: Which of the following will support a 10,000 Mbps connection over fiber optic 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 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: 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: 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: 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