Fiber Optic Cables

Question 0

What are the two types of LGTF cable?

Answer 0

Loose Tube Gel Filled and Loose Tube Gel Free

Question 1

From outside in list in order the parts of a simplex fiber optic cable.

Answer 1

Jacket, strength member, buffer, fiber

Question 2

What is the purpose of Loose Tube Gel Filled and Loose Tube Gel Free cables used for? And where are they usually used?

Answer 2

Used to protect fibers from expansion and contraction of the cable during drastic temperature changes. Usually used in outside plant applications.

Question 3

Where would you use tight-buffered fiber cables?

Answer 3

In controlled environments where the cable will not be subject to extreme temperature changes.

Question 4

What are the two advantages of tight-buffered fiber optic cables?

Answer 4

Smaller in diameter and have a smaller minimum bend radius

Question 5

What is zipcord in fiber optic communications?

Answer 5

Both transmit and receive fiber optic cables connected together. Often referred to as duplex cordage.

Question 6

Multiple tight buffered cables in one jacket is called what?

Answer 6

Distribution cable

Question 7

What is a breakout cable?

Answer 7

Two or more simplex cables bundled with a strength member

Question 8

Loose or tight buffered optical fibers bundled with a strength member and interlocking metal tape wrapped around the inner jacket all inside and outer jacket is know as a?

Answer 8

Armored cable

Question 9

Where would an armored cable be used?

Answer 9

Used indoors in high traffic areas and outdoors to protect the cable during installation and from gnawing animals after installation

Question 10

What is a ribbon cable?

Answer 10

Groups of 4, 8, or 12 optical fibers placed side by side and wrapped with Mylar tape.

Question 11

What are the advantages of ribbon cable?

Answer 11

Not as heavy as regular bundled fibers and takes up less space.

Question 12

What are the disadvantages of ribbon cable?

Answer 12

Connectors, strippers, cleavers and fusion splicers must all be tailored for the ribbon cable.

Question 13

What is submarine cable?

Answer 13

Optical fibers inside a cable designed for underwater use.

Question 14

What is a hybrid cable?

Answer 14

Multimode and single mode fibers bundled in one cable.

Question 15

What is composite cable?

Answer 15

Optical fibers and twisted pair in one cable

Question 16

What is the purpose of a fanout kit?

Answer 16

Used to convert loose optical fibers into tight buffered fibers ready for connectors.

Question 17

What is the NEC?

Answer 17

National Electric Code

Question 18

What does NEC article 770 address.

Answer 18

Standards for fiber optic cables and raceways.

Question 19

What are the key characteristics of Plenum cables?

Answer 19

Fire resistant and low smoke producing

Question 20

What type of cable would be used in an elevator shaft?

Answer 20

Optical Fiber Non-conductive riser (OFNR)

Question 21

List in order the TIA-598-C Fiber Color Code for the first twelve colors.

Answer 21

Blue, orange, green, brown, slate, white, red, black, yellow, violet, rose, aqua

Question 22

How many unique color combinations are there?

Answer 22

36

Question 23

What color is used in military applications?

Answer 23

Slate

Question 24

What color is used for single mode cable?

Answer 24

Yellow

Question 25

What color is used for basic multimode cable?

Answer 25

Orange

Question 26

What type of cable is aqua reserved for?

Answer 26

Laser optimized multimode cable with a 50 micron core

Question 27

Identify the different types of cables?

Answer 27

Optical Fiber non-conductive Plenum 
Optical Fiber conductive Plenum
Optical Fiber non-conductive Riser
Optical Fiber conductive Riser
Optical Fiber non-conductive General
Optical Fiber conductive general

Question 28

What are some rules to consider when substituting one type of cable for another.

Answer 28

1. Non conductive can be substituted for conductive but not vice versa.
2. Plenum can be substituted for Riser but not vice versa.
3. Any cable can be substituted for General
4. General can not be substituted for anything.