Installing a Physical Network

Question 1

set of standards by TIA/EIA for every aspect of a cabled network to be used by professional cable installers

Answer 1

structured cabling

Question 2

the cabling that runs from the telecommunications room to the PCs in a building, usually running through the ceiling

Answer 2

horizontal cabling

Question 3

a single piece of cable running from a work area to a telecommunications room

Answer 3

run

Question 4

height measurement for rack-mounted equipment equaling 1.75 inches; most such devices are 1U, 2U, or 4U

Answer 4

unit (U)

Question 5

official naming convention for patch panels, cabling, and wall outlets

Answer 5

TIA/EIA 606-C

Question 6

box that supplies multiple AC circuits to handle challenging setups

Answer 6

rack-mounted AC distribution boxes

Question 7

the DSL or cable modem in one’s home serving as the demarc between your home and the ISP, usually supplied by the ISP

Answer 7

network interface unit (NIU), also network interface box (NIB) or network interface device (NID)

Question 8

special NIU with extra features, enabling and ISP or telephone company to determine if they customer has disconnected from the unit; might also have remote loopback capability

Answer 8

smart jack

Question 9

the box that network and telephone cables coming from the demarc connnect to, owned by the customer and acting as the primary distribution tool

Answer 9

customer-premises equipment (CPE)

Question 10

the network or telephone cables running from the demarc to the CPE

Answer 10

demarc extension

Question 11

a type of CPE for telephones

Answer 11

multiplexor

Question 12

the main patch panel in a building connecting to the CPE and to every telecommunications room in the building

Answer 12

vertical cross-connect

Question 13

common problem in UTP cables where a signal from one pair of wires is interfering with another pair

Answer 13

split pair

Question 14

common problem in UTP cables, this occurs when another pair picks up the signal from another pair; measured in decibels; also grows as the cable run increases

Answer 14

crosstalk

Question 15

the amount of interference detected on the other three pairs of wires of a UTP cable while a signal is sent down one pair; the detection is measured on the same end of the cable that the signal is sent

Answer 15

near-end crosstalk (NEXT)

Question 16

the amount of interference detected on the other three pairs of wires of a UTP cable while a signal is sent down one pair; the detection is measured on the opposite end of the cable that the signal is sent

Answer 16

far-end crosstalk (FEXT)

Question 17

a delay in completing a transmission of all frames in a message

Answer 17

jitter

Question 18

very powerful testing tools for cables that meet TIA/EIA standards and can print out report to be given to customers; ex. Microtest OMNIScanner by Fluke Networks

Answer 18

cable certifiers

Question 19

problem in fiber connections where a small misalignment? in either the cladding or core, causing serious losses

Answer 19

connector mismatch

Question 20

the spreading out of a signals in a fiber cable over long distances

Answer 20

dispersion

Question 21

when part of the signal traveling down a fiber cable exits the cable rather than the terminated end, caused by exceeding the cable’s bend radius limit

Answer 21

light leakage