67) The collision domain of traditional Ethernet and Fast Ethernet respectively are

68) In a crossbar with 1000 crosspoints, how many statistically are in use at any time

69) Which of the following is a time - division switch?

70) In which routing method do all the routers have a common database

71) A terminal multiplexer has six 1200 bps terminals and (rf 300 bps terminals connected to it. The outgoing line is 9600 bps. What is the maximum value of n