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Computer Aptitude

BASIC COMPUTER KNOWLEDGE MCQs

Total Questions : 1975 | Page 9 of 198 pages
Question 81.  when 2 or more bits in a data unit has been changed during the transmission, the error is called
  1.    random error
  2.    burst error
  3.    inverted error
  4.    none of these
 Discuss Question
Answer: Option B. -> burst error
Explanation :
Question 82.  header of a frame generally contains
  1.    synchronization bytes
  2.    addresses
  3.    frame identifier
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Explanation :
Question 83.  crc stands for
  1.    cyclic redundancy check
  2.    code repeat check
  3.    code redundancy check
  4.    cyclic repeat check
 Discuss Question
Answer: Option A. -> cyclic redundancy check
Explanation :
Question 84.  header of a frame generally contains
  1.    synchronization bytes
  2.    addresses
  3.    frame identifier
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Explanation :
Question 85.  the data link layer takes the packets from _____ and encapsulates them into frames for transmission.
  1.    network layer
  2.    physical layer
  3.    transport layer
  4.    application layer
 Discuss Question
Answer: Option A. -> network layer
Explanation :
Question 86.  which one of the following is a transport layer protocol used in internet?
  1.    TCP
  2.    UDP
  3.    both (A) and (B)
  4.    none of these
 Discuss Question
Answer: Option C. -> both (A) and (B)
Explanation :
Question 87.  which one of the following is a data link protocol?
  1.    ethernet
  2.    point to point protocol
  3.    HDLC
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Explanation :
Question 88.  which one of the following is a data link protocol?
  1.    ethernet
  2.    point to point protocol
  3.    HDLC
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Explanation :
Question 89.  the technique of temporarily delaying outgoing outgoing acknowledgements so that they can be hooked onto the next outgoing data frame is called
  1.    piggybacking
  2.    cyclic redundancy check
  3.    fletcher’s checksum
  4.    none of these
 Discuss Question
Answer: Option A. -> piggybacking
Explanation :
Question 90.  transport layer protocols deals with
  1.    application to application communication
  2.    process to process communication
  3.    node to node communication
  4.    all of these
 Discuss Question
Answer: Option B. -> process to process communication
Explanation :

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