Fiber optic cables are designed to protect the fibers, ease installation, and meet building codes and/or industry standards. This quiz will test your basic knowledge of fiber optic cables, their applications and their installation. You can find the answers in the new FOA Online Fiber Optic Reference Guide (www.thefoa.org/tech/ref), especially the section on fiber optic cables. Answers and explanations are in red.

1. Fiber optic cables, which contain both multimode and single-mode fibers, are called ________.

A. Mixed cables

B. Hybrid cables

C. Composite cables

D. XC cables

Hybrid cables contain two types of fibers, usually multimode and singlemode.

2. Fiber optic cables with metallic conductors as well as fiber are called ________.

A. Mixed cables

B. Hybrid cables

C. Composite cables

D. XC cables

Composite cables contain electrical conductors.

3. Any cable that contains metallic conductors must be properly grounded and bonded.

True

False

All conductive cables require proper grounding and bonding.

4. Cables always should be pulled with ________ to prevent damage.

A. Nylon rope

B. A kellums grip on the jacket

C. A tension gage

D. The cable’s strength members

All cables have strength members designed to withstand the tension reguired for pulling, and only those should be used to attach pull ropes or tapes.

5. No cable should be installed indoors unless ________.

A. It is UL-listed for flame retardance for the National Electrical Code (NEC)

B. It is colored orange to indicate fiber optics

C. It is enclosed in innerduct or conduit

D. The length is printed on the cable jacket

All indoor cables must be rated for flame retardance by an appropriate testing laboratory to meet building codes.

6. The most widely used premises (indoor) cable type is the ________ cable.

A. Zipcord

B. Distribution

C. Breakout

D. Loose tube

Distribution cable provides adequate protection for the fibers in a premises environment while allowing a smaller cable for the number of fibers required. It must be terminated, however inside patch panels where the individual buffered fibers will be protected.

7. The most widely used outside plant cable type is the ________ cable.

A. Zipcord

B. Distribution

C. Breakout

D. Loose tube

Loose tube cable is used outdoors because of its design for higher pulling tension and ability to be filled with water-blocking compounds.

8. In order to specify a fiber optic cable properly, you need to include installation specifications as well as environmental specifications.

True

False

Cable specifications are not only determined by where the cable will be placed, but by how it will be installed, e.g. inside buildings (premises), outdoors in conduit, direct buried, aerial or underwater.

9. Which of the following NEC flammability-rated cables can be installed indoors in air handling spaces?

A. OFNR

B. OFCR

C. OFNP

D. OFC

OFNP is an optical fiber cable, non-conductive and plenun-rated for use in air handling spaces.

10. Besides direct burial outdoors, armored cables are used in ________ to prevent crushing by other cables.

A. Data centers

B. Telecom closets

C. Walls

D. Pedestals

Data centers usually have many cables run under false floors. Using armored fiber cable protects from crushing by the masses of other cables.

HAYES is a VDV writer and trainer and the president of The Fiber Optic Association. Find him at www.JimHayes.com.