Ch. 3 (ITS Cables and Connecting Hardware) Flashcards

1
Q

Screened twisted pair

A

Drain wire

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2
Q

Common styles of screening

A

Foil

Braid

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3
Q

Stranded vs. solid conductors

A

20% to 50% more attenuation

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4
Q

Loose tube fiber characteristics

A

50 or 62.5 µm core

125 µm cladding

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5
Q

Loose tube fiber characteristics

A

Uses an LED or VCSEL

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6
Q

Loose tube fiber applications

A

Suitable up to 2000 meters

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7
Q

Loose tube fiber wavelengths

A

850 & 1300 nanometers

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8
Q

Most common coaxial cables

A

Series 6
Series 11
RG59

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9
Q

Coaxial cable characteristics

A

Centered inner conductor

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10
Q

Coaxial cables or series X cables

A

X designates the construction type

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11
Q

IDC =

A

Insulation displacement contact

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12
Q

IDC connectors

A

Gas-tight physical contact

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13
Q

8P8C

A

8 position 8 contact connector

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14
Q

Difference between T568A and T568B

A

Pairs 2 and 3 are flipped

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15
Q

Standard rackmount

A

19 and 23 inch

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16
Q

Hybrid fiber patch cord

A

SC/ST example

17
Q

66 Block does not support ___

A

Cat 6

18
Q

In T568B what color are pins 3 & 6?

A

Green

19
Q

Stranded loss

A

ISO - 50%

TIA - 20%

20
Q

Cable separation requirements

A

Powerlines in conduit - 6”
Unshielded power lines in conduit - 12”
Open pathways - 24”
Electric motors & transformers - 47”

21
Q

Fiber modal bandwidth measured in ___

A

MHz/km

22
Q

Double ended patch cords attach ___ to ___

A

Connecting hardware to connecting hardware

23
Q

Best screen for lower frequency electromagnetic fields

A

Braid

24
Q

OM3 bandwidth rating

A

2000 MHz/km @ 850 nm

500 MHz/km @ 1300 nm

25
Q

F-style connector is ___ more reliable than the BNC-style

A

Not

26
Q

Single ended cords connect ___

A

Equipment directly to the back of connecting hardware

27
Q

Secondary transmission parameters for balance twisted-pair

A

NVP
Propagation delay
Return loss
Except “inductance”

28
Q

ISO class E

A

Cat 6

29
Q

RF antenna connectors

A

50 ohm BNC

30
Q

Tight buffered fiber attenuates at ___ temperatures

A

Lower

31
Q

BICSI Recommendation

A

Cat 6