GATE 2024 Computer network Rank Booster Quiz 7

A sender uses the Stop-and-Wait ARQ protocol for reliable transmission of frames. Frames are of size 1000 bytes and the transmission rate at the sender is 80 Kbps (1Kbps = 1000 bits/second). Size of an acknowledgement is 100 bytes and the transmission rate at the receiver is 8 Kbps. The one-way propagation delay is 100 milliseconds. Assuming no frame is lost, the sender throughput is __________ bytes/second.

A channel has a bit rate of 4 kbps and a one-way propagation delay of 20 ms. The channel uses a stop and wait protocol. The transmission time of the acknowledgment frame is negligible. To get a channel efficiency of at least 50%, the minimum frame size should be?

Suppose a channel implements SR protocol and has a bandwidth of 512 Kbits/second. We need to send a packet which is of size 1 KB. If transmission delay is 24ms then minimum number of bits required for the sequence number so that we can achieve 80% utilization?

Suppose that the stop-and-wait protocol is used on a link with a bit rate of 64 kilobits per second and 20 milliseconds propagation delay. Assume that the transmission time for the acknowledgment and the processing time at nodes are negligible. Then the minimum frame size in bytes to achieve a link utilization of at least 50% is _________.

Determine the maximum length of the cable (in km) for transmitting data at a rate of 500 Mbps in an Ethernet LAN with frames of size 10,000 bits. Assume the signal speed in the cable to be 2,00,000 km/s.

In GBN protocols using 6 bits to represent the sequence numbers respectively. Then the maximum size of senders window in GBN?

Consider a LAN with an average source and destination 1000 meters apart and the propagation delay is 40 μs. At what data rate does the round trip delay equal to transmission delay for 512 B packets?