Connect is responsible for sending SYN packets - Operating System

Q.  Which is the system call that is responsible for sending of SYN packets?
- Published on 28 Aug 15

a. Bind
b. Socket
c. Connect
d. Listen

ANSWER: Connect


  • Nirja Shah   -Posted on 12 Nov 15
    - socket() creates a new socket of a certain socket type, which is 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 it causes to bound a TCP socket to enter listening state.

    - connect() is used on the client side, and is assigned a free local port number to a socket. In case of a TCP socket, it causes an attempt to establish a new TCP connection.

    The following three way handshakes happens to establish the connection in TCP when connect() is called by client.
    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.

Post your comment / Share knowledge

Enter the code shown above:
(Note: If you cannot read the numbers in the above image, reload the page to generate a new one.)