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BICSI RCDD-001 Exam Practice Questions (P. 2)

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Question #11
Time division multiplexing (TDM) systems are designed to transport ________ between end point systems.
  1. A
    Only analog signals
  2. B
    Only digital signals
  3. C
    A mix of both analog and digital signals
  4. D
    Both analog and digital signals, but only one type at a time

Correct Answer:
B

Question #12
The public telephone system is an example of a __________ system.
  1. A
    Simplex
  2. B
    Half-duplex
  3. C
    Full-duplex
  4. D
    Purely analog
  5. E
    Purely digital

Correct Answer:
C

Question #13
A reasonable approximation for the signal speed in 100 ohm balanced twisted pair cable is __________, where c is the velocity of light in free space.
  1. A
    0.2 c
  2. B
    0.4 c
  3. C
    0.6 c
  4. D
    08 c
  5. E
    0.9 c

Correct Answer:
C

Question #14
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?
  1. A
    0 percent
  2. B
    36 percent
  3. C
    50 percent
  4. D
    80 percent
  5. E
    100 percent

Correct Answer:
B

Question #15
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?
  1. A
    Multimode
  2. B
    Singlemode
  3. C
    UTP
  4. D
    STP

Correct Answer:
D

Question #16
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:
  1. A
    Balun
  2. B
    Converter
  3. C
    Modulator
  4. D
    Cross connect
  5. E
    Transceiver

Correct Answer:
A

Question #17
Optical transmitters are typically one of the following types EXCEPT:
  1. A
    Light-emitting diode (LED)
  2. B
    Short wavelength laser compact disc (CD)
  3. C
    Vertical cavity surface emitting laser (VCEL)
  4. D
    Laser diode (LD)
  5. E
    Overfilled launch (OFL)

Correct Answer:
E

Question #18
All of the following are nominal wavelengths for laser light sources EXCEPT:
  1. A
    700 nm
  2. B
    850 nm
  3. C
    1300 nm
  4. D
    1310 nm
  5. E
    1550 nm

Correct Answer:
A

Question #19
A SONET OC-1 channel can carry 672 voice signals and has a data rate of 51.84 Mbps. A SONET OC-48 channel can carry 32,256 voice channels. What
MINIMUM data rate is required for the OC-48 channel?
  1. A
    155 Mbps
  2. B
    622 Mbps
  3. C
    2.5 Gbps
  4. D
    5 Gbps
  5. E
    10 Gbps

Correct Answer:
C

Question #20
Wave division multiplexing (WDM) is most similar to:
  1. A
    Amplitude modulation
  2. B
    Frequency modulation
  3. C
    Time division multiplexing
  4. D
    Frequency division multiplexing
  5. E
    Carrier sense multiple access with collision detection (CSMA/CD)

Correct Answer:
D

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