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Network+ > Lesson 2D > Flashcards

Lesson 2D Flashcards

1
Q

What is the work area in a structured cabling system?

A

The work area is where user equipment, like computers, are connected to the network through a wall port.

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2
Q

What is horizontal cabling?

A

Horizontal cabling connects user work areas to the nearest horizontal cross-connect, typically running through walls or ceilings on the same floor.

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3
Q

What does backbone cabling do?

A

Backbone cabling connects horizontal cross-connects on different floors to the main cross-connect, often running up and down between floors.

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4
Q

What is a telecommunications room?

A

It houses the horizontal cross-connects and connects to backbone cabling. It may also hold equipment like switches and routers.

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5
Q

What are entrance facilities or demarc?

A

These are special rooms where outside cabling connects to internal cabling, marking where the provider’s network ends and the organization’s network begins.

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6
Q

What is a punchdown block?

A

A punchdown block has terminals where copper wires are pushed in and held in place, used to organize and connect cables.

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7
Q

What is a 66 block used for?

A

66 block is an older distribution frame for telephone cabling and legacy data, with 50 rows of terminals.

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8
Q

What is a 110 block?

A

A 110 block is a distribution frame supporting modern data cabling (Cat 5 and better), arranged horizontally for better density and easier management.

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9
Q

What is a patch panel?

A

A patch panel is a distribution block with IDC terminals on one side and RJ-45 ports on the other, making it easy to change connections with patch cables.

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10
Q

What is a service loop?

A

A service loop is extra cable left at both ends during installation to allow for future changes or reconnections.

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10
Q

What is pulling cable?

A

Pulling cable means installing fixed cable from a spool, carefully routing it through conduits or wall spaces.

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11
Q

What do cable stripping tools do?

A

These tools cut the outer jacket of a cable without damaging the wires inside, making it ready for termination.

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12
Q

What is a punchdown tool used for?

A

A punchdown tool fixes wires into IDC terminals and cuts the excess wire, used for terminating fixed cables.

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13
Q

What does a cable crimper do?

A

A cable crimper attaches a connector, like an RJ-45 plug, to a cable by pressing it together.

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14
Q

What is a fiber distribution panel?

A

A fiber distribution panel organizes and connects fiber optic cables to switches and other equipment.

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15
Q

What does a fusion splicer do?

A

A fusion splicer permanently joins two fiber optic cables together with an arc weld for low insertion loss.

16
Q

What are SFP and SFP+ transceivers?

A

SFP (Small Form Factor Pluggable) is for Gigabit Ethernet using LC connectors. SFP+ is an enhanced version for 10 Gigabit Ethernet.

17
Q

What are QSFP and QSFP+ transceivers?

A

QSFP (Quad Small Form Factor Pluggable) supports 4 x 1 Gbps links. QSFP+ is an enhanced version for 40 Gigabit Ethernet.

18
Q

What is BiDirectional WDM?

A

BiDi WDM uses different wavelengths to send and receive signals over the same fiber strand, like 1310 nm for sending and 1490 nm for receiving.

19
Q

What are CWDM and DWDM?

A

CWDM (Coarse Wavelength Division Multiplexing) supports up to 16 channels over one fiber strand. DWDM (Dense Wavelength Division Multiplexing) supports many more channels with closer spacing, requiring precise lasers.

20
Q

What are BIX and Krone distribution frames?

A

BIX and Krone blocks are types of distribution frames used for terminating cables, with BIX common in North America and Krone in Europe.

21
Q

What is an IDC?

A

An IDC is a terminal that cuts through the insulation of a wire to make a connection without needing to strip the wire first.

22
Q

What is a mux/demux?

A

A mux/demux combines multiple signals into one fiber strand (multiplexing) and then separates them again (demultiplexing) at the other end.

23
Q

What is attenuation?

A

Attenuation is the loss of signal strength as it travels through a cable or other transmission medium.

24
Q

What is an OADM?

A

An OADM inserts or removes specific wavelength channels in a Wavelength Division Multiplexing (WDM) system, used in ring topologies.

25
Q

What is insertion loss?

A

Insertion loss is the reduction in signal strength caused by connectors or splices in a fiber optic link.

26
Q

What is reflection loss?

A

Reflection loss is the loss of signal strength due to reflections at connectors or splices in a fiber optic link.

27
Q

Why is a service loop important?

A

A service loop provides extra cable length to allow for future changes or reconnections without having to replace the cable.

Network+ (13 decks)

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