fundamentals network

EEC_144_001 Assignment 3 Chapter 3 Fiber-Optic Cable

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1) When compared to copper core cables, fiber-optic cables provide _____. (Select all that apply.)

A. greater security

B. complete immunity to electromagnetic interference

C. greater bandwidth

D. easier methods for connector installation

E. complete immunity to attenuation

Answer:

2) Fiber-optic is much more secure than copper core cable because _____.

A. it uses a more complex encryption code for transmitted data

B. it is virtually impossible to tap into without being detected

C. its insulating jacket is too thick for normal data tapping devices

D. data is transmitted at light speed, and is therefore undetectable to typical data snooping devices

Answer:

3) The wavelength of a light wave _____.

A. indicates the distance a light wave travels in one cycle

B. is measured in feet

C. indicates the number of light waves transmitted per second

D. cannot be measured because it is invisible

Answer:

4) FDDI supports a maximum distance of _____meters.

A. 300

B. 2,000

C. 10,000

D. 40,000

Answer:

5) Misalignment or other improper splicing of fiber-optic cable will cause _____.

A. an open

B. a short

C. attenuation

D. data corruption

Answer:

6) Marks or scratches on the ends of the fiber-optic core material cause attenuation due to _____ and refraction.

A. reflection

B. dispersion

C. extrinsic losses

D. Scattering

Answer: