Basic Computer Networks Questions and Answers

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Q151
Gateways can function all the way upto
  • A transport layer
  • B session layer
  • C presentation layer
  • D application layer
Answer: Option D
Q152
How many crosspoints are needed in a single-stage switch with 40 inputs and 50 outputs ?
  • A 40
  • B 50
  • C 90
  • D 2000
Answer: Option D
Q153
Which of the following is a time-division switch ?
  • A TSI
  • B TDM bus
  • C crosspoint
  • D both (a) and (b)
Answer: Option D
Q154
In a time - division switch, which governs the destination of a packet stored in RAM
  • A TDM bus
  • B crosspoint
  • C crossbar
  • D control unit
Answer: Option D
Q155
A bridge has access to which address of a station on the same network ?
  • A physical
  • B network
  • C service access point
  • D all of these
Answer: Option A
Q156
In which routing method do all the routers have a common database ?
  • A distance vector
  • B link state
  • C link vector
  • D none of these
Answer: Option B
Q157
What are the primary characteristics that distinguish a cell from a packet ?
  • A cells are generally smaller that packets
  • B cells do not incorporate physical address
  • C all cells have the same fixed length
  • D packet cannot be switched
Answer: Option C
Q158
Adaptive or dynamic directory used in packet routing changes
  • A within each user session
  • B with each user session
  • C at system generation time only
  • D both (a) and (b) above
Answer: Option A
Q159
The number of cross-points needed for 10 lines in a cross-point switch which is full duplex in nature and there are no self connection is
  • A 100
  • B 45
  • C 50
  • D 90
Answer: Option A
Q160
A terminal multiplexer has six 1200 bps terminals and 'n' 300 bps terminals connected to it. The outgoing line is 9600 bps. What is the maximum value of n ?
  • A 4
  • B 16
  • C 8
  • D 28
Answer: Option C
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