Ch. 3 (ITS Cables and Connecting Hardware) Flashcards Preview

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Flashcards in Ch. 3 (ITS Cables and Connecting Hardware) Deck (31)
0

BICSI Recommendation

Cat 6

1

Screened twisted pair

Drain wire

2

Common styles of screening

Foil
Braid

3

Stranded vs. solid conductors

20% to 50% more attenuation

4

Loose tube fiber characteristics

50 or 62.5 µm core
125 µm cladding

5

Loose tube fiber characteristics

Uses an LED or VCSEL

6

Loose tube fiber applications

Suitable up to 2000 meters

7

Loose tube fiber wavelengths

850 & 1300 nanometers

8

Most common coaxial cables

Series 6
Series 11
RG59

9

Coaxial cable characteristics

Centered inner conductor

10

Coaxial cables or series X cables

X designates the construction type

11

IDC =

Insulation displacement contact

12

IDC connectors

Gas-tight physical contact

13

8P8C

8 position 8 contact connector

14

Difference between T568A and T568B

Pairs 2 and 3 are flipped

15

Standard rackmount

19 and 23 inch

16

Hybrid fiber patch cord

SC/ST example

17

66 Block does not support ___

Cat 6

18

In T568B what color are pins 3 & 6?

Green

19

Stranded loss

ISO - 50%
TIA - 20%

20

Cable separation requirements

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

21

Fiber modal bandwidth measured in ___

MHz/km

22

Double ended patch cords attach ___ to ___

Connecting hardware to connecting hardware

23

Best screen for lower frequency electromagnetic fields

Braid

24

OM3 bandwidth rating

2000 MHz/km @ 850 nm
500 MHz/km @ 1300 nm

25

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

Not

26

Single ended cords connect ___

Equipment directly to the back of connecting hardware

27

Secondary transmission parameters for balance twisted-pair

NVP
Propagation delay
Return loss
Except "inductance"

28

ISO class E

Cat 6

29

RF antenna connectors

50 ohm BNC

30

Tight buffered fiber attenuates at ___ temperatures

Lower