Cabling and termination

Question 1

What is used to stop the connection bouncing back and forth in a bus topology?

Answer 1

Terminators

Question 2

What is the name of the “talking pillow” used in ring topologies?

Answer 2

The token

Question 3

How did manufacturers make hybrid topologies such as star bus and star ring?

Answer 3

They reduced the ring and bus into a single device that sat at the center of the network.

Question 4

What is partial mesh topology.

Answer 4

Not everything is connected, but at least two computers have redundancy

Question 5

Coax consists of the copper core, ______, _________ and the jacket

Answer 5

Insulation, braiding

Question 6

What are the two types of connectors for coax

Answer 6

BNC and F connector. (screw in)

Question 7

What are the two ratings of Coax

Answer 7

RG 59 and RG 6. The former is used for tv cabling, the latter for networks.

Question 8

What is Twinax

Answer 8

Two copper cores in a coax cable

Question 9

What is the purpose the twists in TP cabling

Answer 9

Reducing crosstalk

Question 10

What is F/UTP

Answer 10

Twisted pair with foil shielding on the outside, but no protection on the twisted pairs themselves.

Question 11

What is S/UTP

Answer 11

Braided shield over the cable, no protection on twisted pair

Question 12

What is S/FTP

Answer 12

Braided shield on an ethernet cable, foil shielding on each twisted pair.

Question 13

What is the speed of cat 5

Answer 13

100mbps

Question 14

What is the speed of cat 6

Answer 14

10gbps at 55m

Question 15

What’s the difference between rj 11 and 45

Answer 15

11 has 4 gold contacts (4P4C) and 45 has 8 (8P8C)

Question 16

What does 8P8C mean.

Answer 16

Eight position, eight contacts. Describes wires and contacts on ethernet cabling.

Question 17

Fiber cabling consists of the core, ______, _______ and the jacket.

Answer 17

Cladding, buffer.

Question 18

What is a µ

Answer 18

A micro measurement. Used for measuring cladding/core width.

Question 19

What is a nm

Answer 19

Nanometer. One billionth of a meter. Used to measure wavelengths within fiber.

Question 20

What was made to fix the fiber optic cabling issue of needing a send and receive cable.

Answer 20

Full duplex fiber. LC and MTRJ

Question 21

What are the alternate abbreviations for SMF and MMF

Answer 21

OS, OM

Question 22

Which OM versions use LEDs and is their colour

Answer 22

OM1, OM2 (orange)

Question 23

Which OM versions use lasers and what are their colours

Answer 23

OM3,4,5 (Aqua for 3/4, lime for 5)

Question 24

What colour is OS cabling

Answer 24

Yellow

Question 25

What are the terms that can be used for ST and SC connectors?

Answer 25

Snap twist, snap click.

Question 26

What does PVC mean

Answer 26

Polyvinyl Chloride.

Question 27

What term is used to describe the interconnectivity of network components?

Answer 27

Topology

Question 28

Coaxial cables all have a(n) _______________ rating.

Answer 28

Ohm

Question 29

Which network topology is most commonly seen only in wireless networks?

Answer 29

Mesh

Question 30

Which of the following is a duplex fiber-optic connection?
A.   LC
B.   RJ-45
C.   ST
D.   SC

Answer 30

LC

Question 31

What is the most common category of UTP used in new cabling installations?
A.   Cat 3
B.   Cat 5e
C.   Cat 6
D.   Cat 7

Answer 31

Cat 6

Question 32

Star bus is a _____ star and _____ bus topology

Answer 32

physical, logical

Question 33

What is the difference between a cat 5e and cat 6 RJ45

Answer 33

Cat 5e’s pins (above the gold contacts) are in a line. Whereas the cat 6 version has them in an “up down up down” pattern

Question 34

What is the purpose of a Wiremap tool

Answer 34

To determine continuity within a cable’s termination

Question 35

What is the purpose of a Time Domain Reflectometer

Answer 35

Measures length of a cable - also has a fiber optic variant in OTDR

Question 36

What is NEXT and FEXT

Answer 36

Near and fear end crosstalk - interference bleeding between the twisted pairs within an ethernet cable

Question 37

What is crosstalk measured in (Ethernet)

Answer 37

dB