FREE Registered Communications Distribution Designer (RCDD): Mastering Telecommunications Standards Questions and Answers

Question 1

To which category does this question pertain: What attribute represents an advantage of copper-based media in comparison to optical fiber cable?

Accepted Answer

Susceptibility to EMI

Answer

Corrosion resistance

Answer

Ability to handle analog signals

Answer

Very high data rates

Question 2

A SONET OC-1 channel has the capability to accommodate 672 voice signals, operating at a data rate of 51.84 Mbps. On the other hand, an SONET OC-48 channel is designed to accommodate 32,256 voice channels. What is the LEAST data rate that is necessary for the OC-48 channel to function effectively?

Accepted Answer

2.5 Gbps

Answer

5 Gbps

Answer

10 Gbps

Answer

622 Mbps

Question 3

Given an optical fiber with a core diameter of 62.5 micrometers and a numerical aperture (NA) of 0.275, determine the angle of acceptance (in degrees) applicable to this particular optical fiber.

Accepted Answer

33.7 degrees

Answer

56.3 degrees

Answer

22.8 degrees

Answer

45.0 degrees

Question 4

Which one of the following options does NOT represent a nominal wavelength commonly associated with laser light sources?

Accepted Answer

700 nm

Answer

850 nm

Answer

1300 nm

Answer

1310 nm

Question 5

Which of the following options closely resembles the concept of Wave Division Multiplexing (WDM)?

Accepted Answer

Frequency division multiplexing

Answer

Carrier sense multiple access with collision detection (CSMA/CD)

Answer

Frequency modulation

Answer

Time division multiplexing

Question 6

When combining two sinusoidal signals with identical amplitude (A) and frequency (f), but differing by a phase of 180 degrees, what is the resulting amplitude of the resultant sinusoidal signal formed by their summation?

Accepted Answer

Zero

Answer

2A and a frequency of f

Answer

2A and a frequency of 2f

Answer

A and a frequency of 2f

Question 7

Composite conductors, while typically not suggested, might find application in specific situations due to their various benefits. However, which of the subsequent advantages is not among those offered by composite conductors in such cases?

Accepted Answer

Have good digital transmission characteristics

Answer

Inexpensive

Answer

Easy to produce

Answer

Easily embedded into other materials