Basic Computer Networks MCQ Question and Answer
Basic Computer Networks MCQ Question and Answer
61. Manchester code is a
- non-return to zero code
- polar code
- both (a) and (b) above
- none of these
62. In the carrier sense network if the prevailing condition is a 'channel busy' then if the technique used is
- non-presistent then it results in randomised wait and sense
- 1-persistent then the channel is continually sensed
- p-persistent then randomised retransmission is done
- both (a) (b) above
64. The system that can be used in both priority and non-priority modes is
- TDM
- Register-insertion
- carrier sense systems
- All of these
65. How many characters per sec (7 bits + 1 parity) can be transmitted over a 2400 bps line if the transfer is asynchronous (1 start and 1 stop bit) ?
- 300
- 240
- 250
- 275
66. How many characters per sec (7 bits + 1 parity) can be transmitted over a 2400 bps line if the transfer is asynchronous (1 start and 1 stop bit) ?
- 300
- 240
- 250
- 275
68. BSC is a
- character-oriented protocol
- bit-oriented protocol
- full-duplex protocol
- none of these
70. Bit stuffing refers to
- inserting a '0' in flag steam to avoid ambiguity it with a flag
- inserting a '0' in flag stream to avoid ambiguity
- appending a nibble to the flag sequence
- appending a nibble to the use data stream