RCDD TEST QUESTIONS (TOPIC 1 - TOPIC 7)
Questions And Answers Verified by Experts
All of the following are nominal wavelengths for laser light sources EXCEPT:
A. 700 nm
B. 850 nm
C. 1300 nm
D. 1310 nm
E. 1550 nm A. 700 nm
A video camera has a coaxial cable output. The video signal is to be distributed to devices that
have balanced twisted pair inputs. The transition between these two different transmission media
can be accomplished by using a:
A. Balun
B. Converter
C. Modulator
D. Cross connect
E. Transceiver A. Balun
The public telephone system is an example of a __________ system.
A. Simplex
B. Half-duplex
C. Full-duplex
, RCDD TEST QUESTIONS (TOPIC 1 - TOPIC 7)
Questions And Answers Verified by Experts
D. Purely analog
E. Purely digital C. Full-duplex
Wave division multiplexing (WDM) is most similar to:
A. Amplitude modulation
B. Frequency modulation
C. Time division multiplexing
D. Frequency division multiplexing
E. Carrier sense multiple access with collision detection (CSMA/CD) D. Frequency
division multiplexing
You must place CAT6 cable above a factory floor with automated welding machines and hammer
forges. Of the following, what type of shielding would be most effective?
A. Multi-layer braid
B. Foil and braid
C. Solid metallic conduit
D. Flex metallic conduit
E. Sch. 40 PVC conduit C. Solid metallic conduit
You must place a cable between 2 equipment locations with separate grounds having a potential
difference between them of 2.1 V rms. Which one of the following cables should NOT be used?
, RCDD TEST QUESTIONS (TOPIC 1 - TOPIC 7)
Questions And Answers Verified by Experts
A. Multimode
B. Singlemode
C. UTP
D. STP D. STP
Two sinusoidal signals have the same amplitude (A) and the same frequency (f). They differ in
phase by 180 degrees. If these two signals are added together, the result is a sinusoidal signal
having an amplitude of:
A. Zero
B. 0.707A and a frequency of f
C. A and a frequency of 2f
D. 2A and a frequency of f
E. 2A and a frequency of 2f A. Zero
Composite conductors, although not generally recommended, may be used in special
circumstances because they provide all of the following advantages EXCEPT:
A. Have good digital transmission characteristics
B. Lightweight
C. Inexpensive
D. Easy to produce
E. Easily embedded into other materials A. Have good digital transmission characteristics
, RCDD TEST QUESTIONS (TOPIC 1 - TOPIC 7)
Questions And Answers Verified by Experts
Which is an advantage of stranded conductors over solid conductors?
A. Less costly
B. Simpler terminations
C. Better high frequency performance
D. More flexible D. More flexible
The conversion of an analog speech signal to a pulse code modulation (PCM) digital signal
involves all of the following steps EXCEPT:
A. Low pass filtering
B. Periodic sampling
C. Quantizing
D. Companding
E. Amplitude modulation E. Amplitude modulation
Assume that the optical power transmitted by a 62.5/125 multimode fiber is distributed
uniformly across its core. If this fiber is perfectly coupled (i.e., the two fibers are aligned and
abutted) to a 50/125 fiber, what is the percent of power that is lost?
A. 0 percent
B. 36 percent
C. 50 percent
D. 80 percent
Questions And Answers Verified by Experts
All of the following are nominal wavelengths for laser light sources EXCEPT:
A. 700 nm
B. 850 nm
C. 1300 nm
D. 1310 nm
E. 1550 nm A. 700 nm
A video camera has a coaxial cable output. The video signal is to be distributed to devices that
have balanced twisted pair inputs. The transition between these two different transmission media
can be accomplished by using a:
A. Balun
B. Converter
C. Modulator
D. Cross connect
E. Transceiver A. Balun
The public telephone system is an example of a __________ system.
A. Simplex
B. Half-duplex
C. Full-duplex
, RCDD TEST QUESTIONS (TOPIC 1 - TOPIC 7)
Questions And Answers Verified by Experts
D. Purely analog
E. Purely digital C. Full-duplex
Wave division multiplexing (WDM) is most similar to:
A. Amplitude modulation
B. Frequency modulation
C. Time division multiplexing
D. Frequency division multiplexing
E. Carrier sense multiple access with collision detection (CSMA/CD) D. Frequency
division multiplexing
You must place CAT6 cable above a factory floor with automated welding machines and hammer
forges. Of the following, what type of shielding would be most effective?
A. Multi-layer braid
B. Foil and braid
C. Solid metallic conduit
D. Flex metallic conduit
E. Sch. 40 PVC conduit C. Solid metallic conduit
You must place a cable between 2 equipment locations with separate grounds having a potential
difference between them of 2.1 V rms. Which one of the following cables should NOT be used?
, RCDD TEST QUESTIONS (TOPIC 1 - TOPIC 7)
Questions And Answers Verified by Experts
A. Multimode
B. Singlemode
C. UTP
D. STP D. STP
Two sinusoidal signals have the same amplitude (A) and the same frequency (f). They differ in
phase by 180 degrees. If these two signals are added together, the result is a sinusoidal signal
having an amplitude of:
A. Zero
B. 0.707A and a frequency of f
C. A and a frequency of 2f
D. 2A and a frequency of f
E. 2A and a frequency of 2f A. Zero
Composite conductors, although not generally recommended, may be used in special
circumstances because they provide all of the following advantages EXCEPT:
A. Have good digital transmission characteristics
B. Lightweight
C. Inexpensive
D. Easy to produce
E. Easily embedded into other materials A. Have good digital transmission characteristics
, RCDD TEST QUESTIONS (TOPIC 1 - TOPIC 7)
Questions And Answers Verified by Experts
Which is an advantage of stranded conductors over solid conductors?
A. Less costly
B. Simpler terminations
C. Better high frequency performance
D. More flexible D. More flexible
The conversion of an analog speech signal to a pulse code modulation (PCM) digital signal
involves all of the following steps EXCEPT:
A. Low pass filtering
B. Periodic sampling
C. Quantizing
D. Companding
E. Amplitude modulation E. Amplitude modulation
Assume that the optical power transmitted by a 62.5/125 multimode fiber is distributed
uniformly across its core. If this fiber is perfectly coupled (i.e., the two fibers are aligned and
abutted) to a 50/125 fiber, what is the percent of power that is lost?
A. 0 percent
B. 36 percent
C. 50 percent
D. 80 percent
