89) A packet switching network (highly loaded) has the following characteristics:
Propagation delay = 2 sec/hp.
Data transmission rate = 1.
Packet size = r bit = 512 bits.
Number of of hops = 10.
At what time the last bit of the last packet will reach the receiver

90) What is the percentage of over head on a T1 carrier (1.544 Mbps) ?

91) A noiseless 3 kHz channel transmits bits with binary level signals. What is the maximum data rate

92) Given an infinite amount of buffer space. In the text it was stated that a satellite with two uplink and one downlink slotted ALOHA channels can achieve a downlink utilization of

93) In time division switches, if each memory access takes 100 ns and one frame period is 125ms, then maximum number of lines that can be supported is