GATE CS 2021: Computer Network Rapid Quiz-1 (App update required to attempt this test)

A 200 km long trunk is used to transmit frames using a Go-Back-N protocol, the propagation speed is 5 microsec/km and trunk data rate is 1.5 Mbps and frame size is 32 bytes.

In order to achieve 100 % efficiency what is the maximum window size at the sender’s side?

Let a TCP connection is transferring a 6000 Bytes, 1st byte is numbered as 10010, if data are sent in 5 segments with the first 4 segments carrying 1000 Bytes and the last segment carrying 2000 Bytes then number of the last byte send is ___________?

Suppose a router receives an IP packet containing 500 data bytes and has to forward the packet to a network with maximum transmission unit of 150 bytes. Assume that IP header is 20 bytes long. What are fragment offset value for 2^nd packet?

Consider sending a large file of F bits from node A to node B. There are three links (and two switches) between A and B, and the links are uncongested (that is, no queuing delays). Node A segments the file into segments of S bits each and adds 80 bits of header to each segment, forming packets of L = 80 + S bits. Each link has a transmission rate of R bps. Find the value of S that minimizes the delay of moving the file from node A to node B. Ignore the propagation delay.

Assume a token bucket is used for traffic shaping. A new token is put into the bucket at every 10 μsec. One data packet of 3 bytes are consumed by each token. Initially, the capacity of the token bucket is 15 Mbit. The transmission device can transmit at the full speed of 7 mbps for ____. (up to 2 decimal places)

Which of the following is true?