Basic Computer Networks MCQ Question and Answer
Basic Computer Networks MCQ Question and Answer
71. In Ethernet CSMS/CD, the special bit sequence transmitted by media access management collision handling is called as
- preamble
- postamble
- jam
- none of these
72. Adaptive or dynamic directory used in packet routing changes
- within each user session
- with eachd user session
- at system generation time only
- none of these
73. A terminal multiplexer has six 1200 bps terminals and 'n' 300 bps terminals connected to it.The outgoing line is 9600 bps. the maximum value of n is
- 4
- 16
- 8
- 28
74. Number of cross point point needed for 10 lines in a cross point switch which is full duplex in nature and there are no self-connection is
- 100
- 45
- 8
- 28
75. A modern constellation diagram has data points at (0, 1) and (0, 2). The modern uses
- phase modulation
- amplitude modulation
- both (a) and (b)
- none of these
76. Maximum data rate of a channel for a noiseless 3-kHz binary channel is
- 3000 bps
- 6000 bps
- 1500 bps
- none of these
77. Maximum data rate of a channel of 3000 Hz bandwidth and SNR of 30 dB is
- 75, 000 bps
- 60, 000 bps
- 30, 000 bps
- 30, 000 bps