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Networking Final > Troubleshooting Physical Connectivity > Flashcards

Troubleshooting Physical Connectivity Flashcards

1
Q

The phone line to one office is not working. You have identified the location of the phone line in a 66 block in
the wiring closet.

Which tool would you use to connect to the phone line at the punchdown block to see if you can make and
receive calls?

Punchdown tool
Toner prob
Butt set
TDR

A

Butt set

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2
Q

Users report that the Internet is no longer accessible. You suspect that the line connecting your building to
the Internet is not working properly.

Which of the following allows the service provider to remotely test the local loop?

Demarc
Demarc extension
Loopback plug
Smart jack
Horizontal cross connect
A

Smart jack

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3
Q

Which of the following best describes the condition where a signal sent on one wire is received on another

wire within the same connector?
Split pair
Impedance
NEXT
Attenuation
FEXT
A

NEXT

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4
Q

You have a network connected using a physical bus topology. One of the cables connecting a workstation to the bus breaks.

Which of the following best describes what happens to network communications?

All devices except the device connected with the drop cable will be able to communicate.

No devices will be able to communicate.

Devices on one side of the break will be able to communicate with each other; devices on the other side
will not be able to communicate.

Devices on one side of the break will be able to communicate with each other; devices on the other side
of the break will be able to communicate with each other.

All devices will be able to communicate.

A

No devices will be able to communicate.

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5
Q

You are troubleshooting a connectivity problem in which one client system is unable to connect to a server.

Both the server and client system are connected to the same Ethernet network switch. No other users have
complained of a problem, and you suspect that faulty network cabling might be to blame.

Which of the following troubleshooting steps are you most likely to perform first?

Use a media tester to test the cable between the computer system and the network switch.

Use a media tester to test the cable between the network switch and the server system.

Use a tone generator to test the network cables between the computer and the network switch, and
between the network switch and the server system.

Use a punchdown tool to test the network cable between the computer system and the network switch.

Use a wire crimper to ensure that the cable ends are still fully attached to the cable between both the
computer and the network switch, and between the network switch and the server system.

A

Use a media tester to test the cable between the computer system and the network switch.

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6
Q

You are moving a client to a new location within an Ethernet network. Previous to the move, the client system

did not have difficulty accessing the network.

During the relocation, you attach a patch cable from the client system to the wall jack and from the patch
panel to the switch. Once connected you do not get a link light on the network card or the switch. You swap
out the cable running between the patch panel and the switch with a known working one but you can still not
connect

Which of the following might you suspect as the problem?

Failed network card

Failed switch

Server software configuration error

Faulty termination

Failed patch cable between the client system and the wall jack

Incorrect duplex settings

A

Failed patch cable between the client system and the wall jack

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7
Q

You’re responsible for implementing network cabling in a new network installation. The cabling will be
installed in a manufacturing environment where there is a great deal of electromagnetic interference (EMI).
Which type of cabling would operate best in this environment? (Choose two.)

Category 5 unshielded twisted pair cable

Fiber-optic cable

RG-58 coaxial cable

Category 3 unshielded twisted pair cable

Shielded twisted pair cable

RG-59 coaxial cable

A

Fiber-optic cable

Shielded twisted pair cable

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8
Q

You are creating an Ethernet network for your company. The shipping department is located in a different building that is located 150 meters from the main wiring closet. You connect a single Cat 6e cable to connect
the wiring closet to the shipping building.

Which of the following should you include in your plan?
Repeater
Half-duplex
Spanning tree
Shielded twisted pair
A

Repeater

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9
Q

You are creating an Ethernet network for your company. The shipping department is located in a different

building that is located 150 meters from the main wiring closet. You connect a single Cat6e cable to connect
the wiring closet to the shipping building.

Which of the following conditions are you most likely to experience?

Crosstalk
Open circuit
Impedance mismatch
Attenuation

A

Attenuation

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10
Q

Which of the following tests can be performed by a TDR? (Select two.)

Measure near end and far end crosstalk.

Identify the location of a fault on a cable.

Measure the length of a cable.

Identify split pairs and miswires.

Verify that the cable meets Cat5e, Cat6, or Cat6e standards.

A

Identify the location of a fault on a cable.

Measure the length of a cable.

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11
Q

You are working with an existing fiber optic installation in your building. You want to know how long each
length of cable is that runs through walls.

Which tool should you use?

Toner probe
Smart jack
Multimeter
OTDR

A

OTDR

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12
Q

You are troubleshooting a client connectivity problem on an Ethernet network. The client system has

intermittent connectivity to the network. You discover that the UTP patch cable is run 75 feet from the wall
outlet, passes though the ceiling and over several florescent light fixtures before reaching the client system.

Which of the following may be a cause of the connectivity problem?

EMI interference

Crosstalk

Failed patch cable

The UTP cable does not support transmission distances of 75 feet without signal regeneration.

Attenuation

A

EMI interference

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13
Q

You manage a network that uses loooBaseT Ethernet. You find that one device communicates on the

network at only 100 Mbps.

Which tool should you use to test the drop cable and the connection to the network?
Toner probe
TDR
Certifier
Multimeter
Cable tester
A

Certifier

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14
Q

You have just connected four new computer systems to an Ethernet switch using spare patch cables. After

the installation only three systems are able to access the network. You verify all client network settings and
replace the network card in the failed system. The client is still unable to access the network.

Which of the following might you suspect as the real cause of the problem?

Incorrect LAN protocol
Incorrect routing table
Failed switch
Failed patch cable
Faulty IP stack
A

Failed patch cable

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15
Q

You have decided to implement Gigabit Ethernet on your network. Each switch port is connected to a single device.

Following the installation, you find one device connected to a switch that is only running at 100 Mbps.

Which of the following are likely causes?
Collisions
Incorrect VLAN
Short
Crosstalk
Switching loop
A

Crosstalk

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16
Q

You have a network connected using a physical star topology. One of the drop cables connecting a workstation is removed.

Which of the following best describes what happens to network communications?

Devices on one side of the missing cable will be able to communicate with each other; devices on the
other side of the missing cable will be able to communicate with each other.

No devices will be able to communicate.

Devices on one side of the missing cable will be able to communicate with each other; devices on the
other side of the missing cable will not be able to communicate.

All devices will be able to communicate.

All devices except the device connected with the drop cable will be able to communicate.

A

All devices except the device connected with the drop cable will be able to communicate.

17
Q

You want to create a Ioopback plug using a single RJ-45 connector. How should you connect the wires in the
connector?

Connect pin 1 to pin 5 and pin 2 to pin 6.
Connect pin 1 to pin 3 and pin 2 to pin 4.
Connect pin 1 to pin 8 and pin 2 to pin 7.
Connect pin 1 to pin 2 and pin 3 to pin 3.
Connect pin 1 to pin 3 and pin 2 to pin 6.

A

Connect pin 1 to pin 3 and pin 2 to pin 6.

18
Q

You use Cat5e twisted pair cable on your network. Cables are routed through walls and the ceiling.

A user puts a screw in the wall to hang a picture and pierces the cable such that a signal sent on pin 1 arrives
on the cable connected to pin 7.

What term describes this condition?
Short circuit
Crosstalk
Split pair
Attenuation
Open circuit
A

Short circuit

19
Q

You have a network connected using a full physical mesh topology. The link between device A and device B is
broken.

Which of the following best describes what happens to network communications?

Device A will be able to communicate with any device except for device B.

No devices will be able to communicate with any other device.

Device A will be able to communicate with all other devices.

Device A will not be able to communicate with any other device.

A

Device A will be able to communicate with all other devices.

20
Q

You have a cable Internet connection at home. The installer had connected the router near the outside wall of
your house with RG-6 cable.

You move the cable router a distance of 50 meters using RG-8 cables and special connector adapters.

Which condition are you most likely to experience?

NEXT

Attenuation

EMI

Explanation

A

Explanation

21
Q

Upon conducting a visual inspection of the server room, you see that a switch displays LED collision lights
that are continually lit. You check the LED on the corresponding workstation and see that it is flashing rapidly
even though it is not sending or receiving network traffic at that time.

What is the cause of the network collisions?
Faulty switch
Adapter controller card failure
Incorrect duplex settings
PCI slot failure
Faulty network card
A

Faulty network card

22
Q

You want to measure the voltage, amps, and ohms of various devices.

Which tool should you use?
Butt set
Certifier
voltage event recorder
Toner probe
Multimeter
A

Multimeter

23
Q

During a network infrastructure upgrade, you have replaced two 10 Mbps hubs with switches and upgraded

from Category 3 UTP cable to Category 5e. During the process, you accidentally cut the Cat 5e patch cable
that stretches from the network printer to the upgraded switch.

What is the impact on the network?

All network nodes authenticated by the same server as the printer will be unavailable.

All network nodes connected to the switch will be unavailable.

All network nodes, with the exception of the printer, will be available.

All network nodes on the same subnet as the printer will be unavailable.

All network nodes including the printer will be available.

A

All network nodes, with the exception of the printer, will be available.All network nodes, with the exception of the printer, will be available.

24
Q

A user from the Sales department calls to report that he is experiencing problems connecting to the Sales file

server. All users in the Sales department connect to the Sales server through a single Ethernet switch. No
other users have reported problems connecting to the Sales server.

Which of the following troubleshooting actions are you most likely to perform first?

Replace the network card in the Sales server

Reinstall the network card drivers on the Sales server

Replace the network card in the user’s computer

Replace the Ethernet switch in the Sales department

A

Replace the network card in the user’s computer

25
Q

You have just been hired as a network administrator. A user has just changed offices and needs you to

activate the network and telephone connections in his office. However, the wiring at the punch down block is
labeled poorly and you are unable to tell which wires go to the user’s office.

What should you do?

Use a punch down tool to locate the correct wiring

Use a media tester to locate the correct wiring

Use a tone generator to locate the correct wiring

Install new wiring from the punch down block to the user’s office

A

Use a tone generator to locate the correct wiring

26
Q

You have been asked to document the wiring in your building. You would like to identify the length of each

Cat5 cable to verify that it meets Ethernet standards. You need to identify the length of the cables, but most
cables run through walls and ceilings, making them difficult to trace.

Which tool should you use?
TDR
Toner probe
OTDR
Smart jack
Butt set
A

TDR

Networking Final (31 decks)

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