Transport Layer Protocol
Q41.
Consider the following statements. I. TCP connections are full duplex II. TCP has no option for selective acknowledgement III. TCP connections are message streamsQ42.
Assume that the bandwidth for a TCP connection is 1048560 bits/sec. Let \alpha be the value of RTT in milliseconds (rounded off to the nearest integer) after which the TCP window scale option is needed. Let \beta be the maximum possible window size with window scale option. Then the values of \alpha and \beta areQ43.
The transport layer protocols used for real time multimedia, file transfer, DNS and email, respectively areQ44.
A program on machine X attempts to open a UDP connection to port 5376 on a machine Y, and a TCP connection to port 8632 on machine Z. However, there are no applications listening at the corresponding ports on Y and Z. An ICMP Port Unreachable error will be generated byQ46.
Consider an instance of TCP's Additive Increase Multiplicative Decrease (AIMD) algorithm where the window size at the start of the slow start phase is 2 MSS and the threshold at the start of the first transmission is 8 MSS. Assume that a timeout occurs during the fifth transmission. Find the congestion window size at the end of the tenth transmission.Q47.
Which one of the following socket API functions converts an unconnected active TCP socket into a passive socket?Q48.
Consider socket API on a Linux machine that supports connected UDP sockets. A connected UDP socket is a UDP socket on which connect function has already been called. Which of the following statements is/are CORRECT ? I. A connected UDP socket can be used to communicate with multiple peers simultaneously. II. A process can successfully call connect function again for an already connected UDP socket.