Network Cables

Question 1

What is twisted pair cabling?

Answer 1

A type of copper cabling where pairs of wires are twisted together to reduce interference

Question 2

Why are wires twisted in twisted pair cables?

Answer 2

To cancel out electromagnetic interference (EMI) and reduce crosstalk

Question 3

What does UTP stand for?

Answer 3

Unshielded Twisted Pair

Question 4

What does STP stand for?

Answer 4

Shielded Twisted Pair

Question 5

What is the purpose of shielding in STP cables?

Answer 5

To provide additional protection against electromagnetic interference

Question 6

What IEEE standard defines Ethernet cabling categories?

Answer 6

IEEE 802.3

Question 7

What is the minimum category of cable required for 1000BASE-T (Gigabit Ethernet)?

Answer 7

Category 5 (Cat 5) or Cat 5e

Question 8

What does the “e” in Cat 5e stand for?

Answer 8

Enhanced

Question 9

What is the maximum distance for 1000BASE-T over Cat 5e or Cat 6?

Answer 9

100 meters

Question 10

What is the minimum category of cable required for 10GBASE-T (10-Gigabit Ethernet)?

Answer 10

Category 6 (Cat 6) for up to 55 meters, Category 6A (Cat 6A) for up to 100 meters

Question 11

What does the “A” in Cat 6A stand for?

Answer 11

Augmented

Question 12

What type of cable is commonly used for cable modems and digital cable?

Answer 12

Coaxial cable

Question 13

What is the inner structure of a coaxial cable?

Answer 13

An inner conductor surrounded by an insulating layer, a metallic shield, and an outer jacket

Question 14

What do the abbreviations U, S, and F represent in cabling?

Answer 14

U: Unshielded, S: Braided Shielding, F: Foil Shielding

Question 15

What does U/UTP mean?

Answer 15

Unshielded Twisted Pair with no overall or individual pair shielding

Question 16

What does S/FTP mean?

Answer 16

Shielded Twisted Pair with braided shielding overall and foil shielding on each pair

Question 17

What does F/UTP mean?

Answer 17

Foil-shielded Twisted Pair with foil shielding overall and no individual pair shielding

Question 18

What is a direct burial STP cable?

Answer 18

A Shielded Twisted Pair cable designed to be buried underground, often waterproofed with gel

Question 19

What is the purpose of the drain wire in STP cables?

Answer 19

To provide electrical grounding for the shield

Question 20

What is a plenum space?

Answer 20

The air-handling space above drop ceilings or below raised floors used for HVAC and cabling

Question 21

Why are plenum-rated cables required in plenum spaces?

Answer 21

To reduce the risk of fire, smoke, and toxic fumes spreading through the building

Question 22

What materials are used in plenum-rated cables?

Answer 22

Fluorinated Ethylene Polymer (FEP) or low-smoke Polyvinyl Chloride (PVC)

Question 23

What material is commonly used in non-plenum cables?

Answer 23

Polyvinyl Chloride (PVC)

Question 24

What is the purpose of gel in direct burial cables?

Answer 24

To repel water and protect the cable from moisture damage

Question 25

What is the maximum distance for 10GBASE-T over Cat 6 (unshielded)?

Answer 25

55 meters

Question 26

What is the maximum distance for 10GBASE-T over Cat 6A?

Answer 26

100 meters

Question 27

Twisted pair cables use shielding to cancel out interference.

Answer 27

False (Twisting cancels out interference; shielding provides additional protection)

Question 28

Cat 5e cables support 10-Gigabit Ethernet up to 100 meters.

Answer 28

False (Cat 5e supports 1-Gigabit Ethernet up to 100 meters)

Question 29

Coaxial cables are primarily used for Ethernet networking.

Answer 29

False (Coaxial cables are commonly used for cable modems and digital cable)

Question 30

UTP cables have shielding around each pair of wires.

Answer 30

False (UTP cables are unshielded)

Question 31

STP cables are more resistant to interference than UTP cables.

Answer 31

True

Question 32

Cat 6A cables support 10-Gigabit Ethernet up to 100 meters.

Answer 32

True

Question 33

Direct burial cables do not require waterproofing.

Answer 33

False (Direct burial cables are waterproofed, often with gel)

Question 34

Plenum-rated cables are more flexible than non-plenum cables.

Answer 34

False (Plenum-rated cables are often less flexible due to fire-resistant materials)

Question 35

The "e" in Cat 5e stands for "extended."

Answer 35

False (The "e" stands for "Enhanced")

Question 36

Foil shielding (F) provides better protection than braided shielding (S).

Answer 36

False (Both have advantages; foil is better for high-frequency interference, braided for durability)

Question 37

F/UTP cables have foil shielding around each pair of wires.

Answer 37

False (F/UTP has foil shielding overall, not on each pair)

Question 38

S/FTP cables have braided shielding overall and foil shielding on each pair.

Answer 38

True

Question 39

Plenum spaces are only found in residential buildings.

Answer 39

False (Plenum spaces are common in commercial buildings)

Question 40

PVC is a fire-resistant material used in plenum-rated cables.

Answer 40

False (PVC is not fire-resistant; FEP or low-smoke PVC is used in plenum-rated cables)

Question 41

The maximum distance for 10GBASE-T over Cat 6 (shielded) is 100 meters.

Answer 41

True

Question 42

Coaxial cables have an inner conductor and an outer shield.

Answer 42

True

Question 43

A network administrator needs to run 10-Gigabit Ethernet over 75 meters. What minimum category of cable should they use?

Answer 43

Cat 6A

Question 44

A technician is installing Ethernet cables in a plenum space. What type of cables should they use?

Answer 44

Plenum-rated cables (FEP or low-smoke PVC)

Question 45

A company wants to connect two buildings 150 meters apart using Ethernet. What should they consider instead of standard twisted pair cables?

Answer 45

Fiber optic cables or wireless bridging

Question 46

A technician is installing cables underground without conduit. What type of cables should they use?

Answer 46

Direct burial STP cables

Question 47

A user notices slow speeds on their 10-Gigabit Ethernet connection over Cat 6 cables. What could be the issue?

Answer 47

The Cat 6 cables exceed the 55-meter limit for 10GBASE-T

Question 48

A network administrator is installing cables in a commercial building with a drop ceiling. What type of cables should they use for safety compliance?

Answer 48

Plenum-rated cables

Question 49

A technician is troubleshooting interference issues on a network. What type of cabling should they consider using?

Answer 49

Shielded Twisted Pair (STP)

Question 50

A company wants to upgrade their network to support 10-Gigabit Ethernet over 100 meters. What category of cable should they use?

Answer 50

Cat 6A

Question 51

A technician is installing a cable modem. What type of cable should they use to connect it?

Answer 51

Coaxial cable

Question 52

A network administrator is planning a new network installation in a data center. What type of cabling should they use to minimize interference?

Answer 52

S/FTP or F/UTP

Question 53

A technician is replacing old Cat 5 cables. What newer category of cables should they use for Gigabit Ethernet?

Answer 53

Cat 5e or Cat 6

Question 54

A company wants to run Ethernet cables through an area with high electromagnetic interference. What type of cables should they use?

Answer 54

Shielded Twisted Pair (STP)

Question 55

A technician is installing cables in a residential home. Do they need to use plenum-rated cables?

Answer 55

No (Plenum-rated cables are typically required in commercial buildings)

Question 56

A user is experiencing signal loss over a long Ethernet cable run. What could be the issue?

Answer 56

The cable exceeds the maximum distance for its category

Question 57

A network administrator is installing cables in a building with strict fire safety codes. What type of cables should they use?

Answer 57

Plenum-rated cables