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MCQs

Total Questions : 885 | Page 8 of 89 pages
Question 71. Most data communications involving telegraph lines use:
  1.    simplex lines
  2.    wideband channel
  3.    dialed service
  4.    narrowband channel
 Discuss Question
Answer: Option D. -> narrowband channel
Question 72. In a synchronous modem, the digital-to-analog converter transmits signal to the
  1.    demodulator
  2.    modulator
  3.    equalizer
  4.    terminal
  5.    none of above
 Discuss Question
Answer: Option C. -> equalizer
Question 73. Which of the following is required to communicate between two computers?
  1.    all of above including access to transmission medium
  2.    protocol
  3.    communication hardware
  4.    communications software
 Discuss Question
Answer: Option A. -> all of above including access to transmission medium
Question 74. Which runs on computer hardware and serve as platform for other software to run on?
  1.    Application Software
  2.    Opera ting System
  3.    System Software
  4.    All the above
  5.    none of the above
 Discuss Question
Answer: Option B. -> Opera ting System
Question 75. A communications device that combines transmissions from several I/O devices into one line is a
  1.    concentrator
  2.    modifier
  3.    full-duplex line
  4.    multiplexer
 Discuss Question
Answer: Option D. -> multiplexer
Question 76. What is the full form of USB as used in computer related activities ?
  1.    Universal Serial Bus
  2.    Ultra Serial Block
  3.    United Service Block
  4.    Universal Security Block
  5.    None of these
 Discuss Question
Answer: Option A. -> Universal Serial Bus
Question 77. Computers send and receive data in the form of _________ signals.
  1.    Analog
  2.    Digital
  3.    Modulated
  4.    Demodulated
  5.    All of these
 Discuss Question
Answer: Option B. -> Digital
Question 78. From the physical computer shares characteristics with both hardware and software
  1.    All the above
  2.    Software
  3.    Data
  4.    Operating system
  5.    none of the above
 Discuss Question
Answer: Option D. -> Operating system
Question 79. In OSI network architecture, the routing is performed by
  1.    data link layer
  2.    network layer
  3.    .transport layer
  4.    session layer
  5.    none of above
 Discuss Question
Answer: Option B. -> network layer
Question 80. The __ is a device that connects n inputstom outputs,
  1.    Cross point
  2.    Crossbar
  3.    None of these
  4.    RAM
  5.    Modem
 Discuss Question
Answer: Option E. -> Modem

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