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Which of the following system calls results in the sending of SYN packets?

  1. socket

  2. bind

  3. listen

  4. connect

asked in Computer Networks by Veteran (59.4k points) | 2k views
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answer (D)

socket()   creates a new socket of a certain socket type, identified by an integer number, and allocates system resources to it.
bind()  is typically used on the server side, and associates a socket with a socket address structure, i.e. a specified local port number and IP address.
listen() is used on the server side, and causes a bound TCP socket to enter listening state.
connect() is used on the client side, and assigns a free local port number to a socket. In case of a TCP socket, it causes an attempt to establish a new TCP connection.

When connect() is called by client, following three way handshake happens to establish the connection in TCP.
1) The client requests a connection by sending a SYN (synchronize) message to the server.
2) The server acknowledges this request by sending SYN-ACK back to the client.
3) The client responds with an ACK, and the connection is established.

answered by Boss (14.4k points)
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ans b)
answered by Active (5.2k points)
+1
It is connect !


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