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Free Practice Quiz Question List

3 Network Cabling and Physical Media Online Quiz Questions

Use this free practice quiz with 20 questions to review 3 Network Cabling and Physical Media, test your knowledge, and prepare for your next test or exam.

20 questions
01
Choose one
1 point

Which application is a typical use for coaxial cable?

  1. A

    A standard connection between a desktop and an Ethernet switch

  2. B

    A cable broadband or radio-frequency signal connection

  3. C

    A fiber link between two buildings

  4. D

    A PoE connection that requires no copper conductors

02
True or false
1 point

A fiber-optic link can provide electrical isolation and resistance to electromagnetic interference.

  1. A

    True

  2. B

    False

03
Written response
1 point

What is the maximum channel length for Cat 8 channels designed for 25 or 40 Gb/s? Give the distance in metres.

04
Choose one
1 point

A technician terminates both ends of a four-pair cable using T568B. How should the resulting cable be classified?

  1. A

    It is a crossover cable because both ends use the same scheme.

  2. B

    It is valid only if both ends use T568A.

  3. C

    It is a straight-through cable, whether the scheme is A–A or B–B.

  4. D

    It is invalid unless one end uses T568A and the other uses T568B.

05
Choose all
1 point

You are planning a fiber link between network devices. Select all checks needed to determine whether the proposed link will work.

  1. A

    Confirm that the transceivers support the selected fiber type.

  2. B

    Verify that the optical interfaces support the required wavelength, speed, and distance.

  3. C

    Check that the link's total optical loss is within its budget.

  4. D

    Ensure the connectors match the equipment, or use a compatible patch cord or adapter.

  5. E

    For a duplex link, verify transmit-to-receive polarity.

  6. F

    Choose the fiber type alone; it determines the supported reach regardless of the optics.

  7. G

    Rely on connector color instead of checking labels and specifications.

06
Fill in the blank
1 point

In four-pair copper Ethernet cable, twisting the insulated wires helps reduce electromagnetic interference and between pairs.

07
Fill in the blank
1 point

When the equipment, cable, and installation support it, copper Ethernet links can carry electrical power using .

08
True or false
1 point

A Cat 6 cable is guaranteed to support 10 Gb/s up to 55 m in every installation.

  1. A

    True

  2. B

    False

09
Choose all
1 point

When selecting a cable for an installation route, which conditions should be considered? Select all that apply.

  1. A

    Whether the route is indoors or outdoors

  2. B

    Moisture and temperature conditions along the route

  3. C

    The color of the cable jacket, regardless of its rating

  4. D

    Electrical interference and the required fire rating

10
Choose one
1 point

A new copper Ethernet channel must carry 10 Gb/s over 100 m. Which cable category is the appropriate choice based on the stated guidance?

  1. A

    Cat 5e, because it is specified for 10 Gb/s to 100 m.

  2. B

    Cat 6A, because it is a common choice for 10 Gb/s to 100 m.

  3. C

    Cat 6, because its 10 Gb/s reach is guaranteed to be 100 m.

  4. D

    Cat 8, because it supports 25 or 40 Gb/s channels up to 100 m.

11
Choose one
1 point

A planned conventional structured copper Ethernet channel is longer than 100 m. Which response best follows the cabling guidance?

  1. A

    Use any higher category of copper cable; category determines the maximum channel length.

  2. B

    Add patch cords until the route reaches the needed length; patch cords do not count toward the channel.

  3. C

    Consider fiber or a suitable intermediate network device rather than assuming a higher category will extend the link.

  4. D

    Use Cat 6A, which is specified to extend conventional copper channels beyond 100 m.

12
Open ended
1 point

A desktop and a nearby switch are connected by an installed Cat 5e cable, but the expected network connection is not working. Describe a practical troubleshooting approach, giving at least three checks you would make before replacing the cable.

13
Choose one
1 point

A technician is choosing cable for a cable-broadband signal feed. Which medium is designed for applications of this kind?

  1. A

    Connections between computers in most modern Ethernet LANs

  2. B

    Cable broadband and some radio-frequency systems

  3. C

    Long-distance links between buildings using optical signals

  4. D

    Carrying PoE over four pairs of copper wires

14
Written response
1 point

A cable will run vertically between floors in a building. What jacket rating is intended for this type of run?

15
True or false
1 point

True or false: Cat 6A is itself an Ethernet speed, rather than a cable category that specifies transmission performance.

  1. A

    True

  2. B

    False

16
Choose one
1 point

A technician is making a normal straight-through structured-cabling link and has chosen T568B. How should the cable be terminated at its other end?

  1. A

    Use T568A at one end and T568B at the other

  2. B

    Use T568A at one end and leave the other end unterminated

  3. C

    Use T568B at both ends

  4. D

    Swap the blue and brown pairs at one end

17
Written response
1 point

For conventional structured copper Ethernet cabling, what is the general maximum channel length, including patch cords? Enter the value in metres.

18
Choose one
1 point

A team plans to power a network device over its Ethernet link. Which check is necessary before relying on PoE?

  1. A

    Confirm that the equipment, cable, and installation all support PoE

  2. B

    Use coaxial cable because it has a conductive shield

  3. C

    Use any twisted-pair cable regardless of its condition or installation

  4. D

    Replace the network interfaces with optical interfaces

19
Choose one
1 point

A cable route passes through an air-handling space for which local code requires a plenum rating. Which cable jacket rating should the installer select?

  1. A

    Riser cable, because all indoor spaces are vertical runs

  2. B

    Plenum cable, if required for the air-handling space and applicable codes

  3. C

    Any indoor-rated cable, because indoor ratings cover all spaces

  4. D

    Direct-burial cable, because it has the broadest indoor use

20
Written response
1 point

A duplex fiber link is patched so that each endpoint’s transmit signal reaches the other endpoint’s transmit port instead of its receive port. Which link property must be corrected?