List of top Computer Networks Questions on Transport Layer

The full form of MQTT is
Consider the data transfer using TCP over a 1 Gbps link. Assuming that the maximum segment lifetime (MSL) is set to 60 seconds, the minimum number of bits required for the sequence number field of the TCP header, to prevent the sequence number space from wrapping around during the MSL is \(\underline{\hspace{1cm}}\).
Consider the three-way handshake mechanism followed during TCP connection establishment between hosts $P$ and $Q$. Let $X$ and $Y$ be two random 32-bit starting sequence numbers chosen by $P$ and $Q$ respectively. Suppose $P$ sends a TCP connection request message to $Q$ with a TCP segment having SYN bit = 1, SEQ number = $X$, and ACK bit = 0. Suppose $Q$ accepts the connection request. Which one of the following choices represents the information present in the TCP segment header that is sent by $Q$ to $P$?
A TCP server application is programmed to listen on port number \(P\) on host \(S\). A TCP client is connected to the TCP server over the network. Consider that while the TCP connection was active, the server machine \(S\) crashed and rebooted. Assume that the client does not use the TCP keepalive timer. Which of the following behaviors is/are possible?

The TCP connection establishment process involves a 3-way handshake. Which of the following steps correctly represents the 3-way handshake?