Section 6 - Installing a Physical Network

Question 1

Structured cabling is essentially…

Answer 1

… the organization of a network.

Question 2

Provide the three aspects of structured cabling.

Answer 2

Telecommunications Closet
Horizontal Run
Work Area

Question 3

What piece of hardware is used to terminate one end of horizontal runs?

Answer 3

Patch panels

Question 4

What is used to connect a switch to a patch panel or a computer to a wall jack?

Answer 4

Patch cable(s)

Question 5

An RJ-45 crimp is only used on __.

A) Patch cables
B) Patch panels
C) Phone cables

Answer 5

A) Patch cables

Question 6

Horizontal runs used to require 66-punchdown panels for terminating. Nowadays, we use __-___ panels.

Answer 6

110-punchdown panels

Question 7

UTP and STP cabling is rated by catX. What two pieces of hardware also use cat ratings?

Answer 7

Patch panels

RJ-45 connectors

Question 8

Define MDF

Answer 8

Main Distribution Frame; the primary equipment room for structured cabling.

Question 9

Define IDF

Answer 9

Intermittent Distribution Frame; the additional equipment rooms that extend structured cabling networks.

Question 10

What is the standardized rack size used for installing equipment?

Answer 10

19” rack

Question 11

What is a U and what is its standardized height?

Answer 11

Unit; a space in the rack that allows for installation of switches, routers, etc. and its standardized height is 1 3/4” tall.

Question 12

The __ separates the telecom company’s property from your property.

A) Demarc
B) D mark

Answer 12

A) Demarc

Question 13

What would I use to terminate fiber-optic runs into an MDF?

Answer 13

Fiber distribution patch panel

Question 14

__ testing will show if the cable has any breaks.

A) Wiremap
B) Continuity
C) Distance using TDR

Answer 14

B) Continuity

Question 15

__ testing will show the length of the cable and help pinpoint mid-cable breaks.

A) Wiremap
B) Continuity
C) Distance using TDR

Answer 15

C) Distance using TDR

Question 16

What is a TDR and what is it used for?

Answer 16

Time Domain Reflectometer; used to show the length of a cable run and helps pinpoint mid-cable breaks.

Question 17

A loopback plug can be used to test the __’s ability to send and receive.

Answer 17

NIC’s

Question 18

Which two components of structured cabling are most prone to failure?

Answer 18

Patch cables

Wall outlets

Question 19

True/False:

A voltage monitor tracks and records problems with heat and humidity.

Answer 19

False; a voltage monitor tracks and records problems with power.

Question 20

True/False:

An environmental/temperature monitor tracks and records problems with heat and humidity.

Answer 20

True

Question 21

A Fox&Hound device is used to locate cables and connections. What is the true name for this device?

Answer 21

Toner & Probe

Question 22

A tone generator creates a __ for the probe. A tone probe translates that into an __ __.

Answer 22

Signal

Audible tone

Question 23

What device is used to test all wires in a cable are working and have been terminated correctly?

Answer 23

Wiremap

Question 24

What is a TDR that is used for fiber-optic called?

Answer 24

OTDR; Optical Time Domain Reflectometer

Question 25

Near-end Crosstalk and Far-end Crosstalk is communication interference and is measured in decibels. Provide the acronym for both near and far-end crosstalk.

Answer 25

NEXT

FEXT

Question 26

__ is when the LED light being emitted breaks down over distance and is more of a fuzzy haze than a direct beam by the time it reaches the opposite end.

Answer 26

Modal Distortion

Question 27

Define attenuation

Answer 27

The degradation of a signal the father distance it travels.

Question 28

Define jitter and provide a scenario where it is evidently affecting the network.

Answer 28

When packets get dropped in transit and data arrives incomplete.
Jitter might occur while playing games or video streaming. Games and videos will skip frames or “jitter.”