BISCI chapter 1

Question 1

what are 3 Popular coaxial cable type

Answer 1

RG-59
series 11
series 6

Question 2

Which set of cable specifications provides better performance?

Answer 2

Low dB for insertion loss and high dB for crosstalk

Question 3

305 meters of cable has an impedance of 100 ohms and 610 meters has an impedance of 200 ohms.

Answer 3

False

Question 4

What is the power ratio (gain) at 30 dB?

Answer 4

1000%

Question 5

What is the maximum performance frequency specified for a Category 3 cable?

Answer 5

16 MHz

Question 6

Based on insertion loss, a lower dB number indicates better cable performance.

Answer 6

True

Question 7

What electrical property effects return loss?

Answer 7

Impedance

Question 8

what multimode has the highest Band with

Answer 8

OM4

Question 9

what multimode has the lowest bandwidth

Answer 9

OM1

Question 10

What type of optical fiber cable assembly should be used if it is going to be exposed to wide temperature changes?

Answer 10

Loose-tube

Question 11

Singlemode fiber typically uses a laser light source.

Answer 11

True

Question 12

What is the diameter of the cladding of an optical fiber strand?

Answer 12

125 µm

Question 13

What type of connector is used on screened twisted-pair cable?

Answer 13

Shielded modular connector

Question 14

Series 6 is used in video backbone distribution.

Answer 14

False

Question 15

what type of cable is a Patch or Equipment cord

Answer 15

Zip cord

Question 16

what type of cord has a strand coating of 900 micrometres

Answer 16

Tight buffered

Question 17

what type of cable Contains multiple 900 µm tight-buffered fiber strands

Answer 17

Distribution

Question 18

what type of cable Contains multiple, jacketed , single-strand cables

Answer 18

Breakout

Question 19

Based on crosstalk, a higher dB number indicates a better cable performance.

Answer 19

True

Question 20

what is the appropriate description MHz

Answer 20

Quantifies the bandwidth of a cabling system. this relates to the information-handling capability of the media

Question 21

what is the appropriate description for Mb

Answer 21

refers to the number of bits of information that can be transported over the media

Question 22

what is the appropriate impedance for series 6, series 11, and RG-59

Answer 22

75 OHMS

Question 23

What type of optical fiber cable assembly is typically used inside buildings?

Answer 23

Tight-buffered

Question 24

TRADE KNOWLEDGE: A horizontal cable is terminated at a WA jacks using the T568A configuration. The other end of the cable is terminated on a BIX block that has 50 termination positions. What are colours of the conductor insulation on termination position 3 and termination 6 of a 25 pair BIX block located in the telecommunication room?

Answer 24

position 3 = White/Orange
position 6 = green/white

Question 25

A furcation tubing is used to build up the fiber strand's diameter, to allow direct connectorization.

Answer 25

True

Question 26

What wavelengths are used with OS1 SM fiber?

Answer 26

1550 mm and 1310mm

Question 27

Bandwidth does not represent the information-carrying capacity of a system.

Answer 27

false

Question 28

What wavelengths are used with MM fiber?

Answer 28

1300 nm and 850 nm

Question 29

What 2 types of coaxial cables may be terminated with BNC connectors?

Answer 29

RG-59 and series 6

Question 30

What are the typical dimensions of the buffer coating protecting the cladding of the fiber strand? Please select one or more.

Answer 30

250 µm, 900 µm

Question 31

How many individual NEXT test are done on a 4-pair cable?

Answer 31

12

Question 32

A communications channel has an attenuation of 6 dB. What is the percentage of the power is lost?

Answer 32

75%

Question 33

Describe what 8P8C represents.

Answer 33

8 position 8 contact

Question 34

Which conductor has a lower resistance

Answer 34

22 AWG

Question 35

What are the core sizes of multimode fiber? Please select one or more

Answer 35

50 µm, 62.5 µm

Question 36

What type of optical fiber should be used to connect an Horizontal Cross-connect to a Main Cross-connect, 2500 meters apart?

Answer 36

singlemode

Question 37

Give an example of an application that uses full duplex.

Answer 37

telephone circuit (flux capacitor)

Question 38

What is the minimum outside diameter of the coating that is applied over the optical fiber cladding?

Answer 38

250 µm

Question 39

Which Ohm's law formula is not correct?

Answer 39

I=RV

Question 40

Which number is a better Next value?

Answer 40

-30 Db

Question 41

The cladding has a higher refractive index than the core.

Answer 41

false

Question 42

Along with the dB value, what additional information is requires when reporting Insertion Loss?

Answer 42

Length

Question 43

AWhat are the typical light sources for MM fiber?

Answer 43

VCSELs, LED

Question 44

What are the lowest and highest frequencies TIA Category cables are tested at?

Answer 44

low 16 MHz high 2000 MHz