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Network+ > 05 - Installing a Physical Network > Flashcards

05 - Installing a Physical Network Flashcards

1
Q

Structured Cabling

A

set of standards used all over the world to install cabling in a safe and orderly fashion

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2
Q

Who sets standards for structured cabling?

A

TIA/EIA

Telecommunications Industry Association / Electronic Industries Alliance

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3
Q

Differences between solid and stranded core?

A

solid core is a better conductor

stranded core is harder to break

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4
Q

Solid or stranded core for horizontal runs?

A

solid

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5
Q

Equipment Rack width

A

19 inches

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6
Q

Height measurements for equipment racks

A

U (unit)

- 1.75 inches

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7
Q

Patch panel

A

a box with a row of female ports in the front and permanent connections in the back, to which you connect the horizontal cables

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8
Q

Most common type of patch panel today

A

110 block

- offers less crosstalk than the old 66 block (2 pair block)

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9
Q

Patch Cable

A

short (3-5 ft) straight-through UDP cables

  • usually stranded core
  • reinforced boot
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10
Q

Demarc

A

marks the dividing line of responsibility for the functioning of the network

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11
Q

CPE

A

Customer-Premises Equipment

  • box past the demarc
  • wires that connect are called demarc extension
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12
Q

NIU

A

Network Interface Unit

  • serves as demarc between home and ISP
  • usually modem
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13
Q

MDF

A

Main Distribution Frame

- main swtich room, leads to all other rooms

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14
Q

IDF

A

Intermediate Distribution Room

- any switch room that isn’t the MDF

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15
Q

Steps to Install Cable

A 
1 - get floorplan
2 - map cable runs
3 - determine location of telecommunications room
4 - pull cable
5 - test runs
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16
Q

Determine location of telecommunications room

A
  • distance
  • power
  • humidity
  • cooling
  • access
17
Q

wiremap test

A
  • continuity
  • both ends are connected to the right place
  • shorts
  • crossed wires
18
Q

TDR

A

Time Domain Reflectometer

  • tests continuity and wiremap
  • can tell where a break is on an individual wire
19
Q

NEXT & FEXT

A
  • Near-end crosstalk, Far-end crosstalk
  • how far the crosstalk is from the testing device on the wire
  • measured in dB
20
Q

attenuation

A
  • the farther down a wire a signal goes, the weaker it gets

- measured in dB

21
Q

cable certifiers

A

tools that verify cable runs meet TIA/EIA standards

22
Q

Troubleshoot SFP

A
  • check cable and connector
  • check for dirty connectors
  • check for physical or signal mismatch
23
Q

light leakage

A
  • bending a cable past its bend radius limitation

- light goes out of the cable instead of the end

24
Q

dispersion

A

signal spreads out over distance

25
Q

OTDR

A

Optical Time Domain Reflectometer

- TDR for fiber

26
Q

Biggest issues with fiber

A

attenuation, light leakage, modal distortion

27
Q

bonding

A
  • using more than one NIC in a machine
  • also called link aggregation
  • double the speed from NIC to switch
28
Q

LACP

A

Link Aggregation Control Protocol

- controls how multiple network devices send and receive data as a single connection

29
Q

link light

A
  • solid when connected

- flashing or off means there is a problem

30
Q

activity light

A
  • flickers with network traffic
31
Q

collision light

A
  • flickers when it detects collisions

- on older NICs

32
Q

Troubleshoot fiber

A
  • no lights for connections

- since connectors and NICs are the only places that can be touched, these are the first places to check

33
Q

UPS

A

Uninterruptible Power Supply

  • battery backup that plugs into wall
  • does not provide enough power to continue running, just to shutdown in an orderly fashion
34
Q

Two types of UPS

A
  • Online - always on

- Standby - goes on when it detects power outage

35
Q

Voltage Event Recorder

A

tracks voltage over time

36
Q

A(n) _______________ organizes and protects the horizontal cabling in the telecommunications room.

A

Patch panel

Network+ (7 decks)

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