Basic Computer Networks Questions and Answers

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Q81
Which of the following measures the number of lost or garbled messages as a fraction of the total sent in the sampling period ?
  • A Residual Error rate
  • B Transfer failure probability
  • C Connection release failure probability
  • D Connection establishment failure probability
Answer: Option A
Q82
In session layer, during data transfer, the data stream responsible for the control purpose ( i.e. control of the session layer itself) is
  • A regular data
  • B typed data
  • C capability data
  • D expedited data
Answer: Option C
Q83
The minimum number of required to represent all the symbols together is
  • A 1
  • B 2
  • C 3
  • D 4
Answer: Option C
Q84
the minimum number of required to represent all the symbol Together is
  • A 15
  • B 14
  • C 12
  • D 11
Answer: Option C
Q85
The average code length of the given problem is
  • A 2.45
  • B 2.25
  • C 2.00
  • D none of these
Answer: Option B
Q86
A standard RS-232C signal is
  • A RTS
  • B CTS
  • C DSR
  • D all of these
Answer: Option D
Q87
A high speed communication equipment typically would not be needed for
  • A E-mail
  • B transferring large volume of data
  • C supporting communication between nodes in a LAN
  • D all of the above
Answer: Option A
Q88
Which of the following ISO level is more closely related to the physical communications facilities ?
  • A Application
  • B Session
  • C Network
  • D Data link
Answer: Option D
Q89
A field in the Ethernet message packet is
  • A Type
  • B Data
  • C Address
  • D All of these
Answer: Option D
Q90
The network topology that supports bidirectional links between each possible node is
  • A ring
  • B star
  • C tree
  • D mesh
Answer: Option D

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