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Wednesday 20 October 2010

TCP/IP Stack

TCP - Transport Control Protocol - Breaks data down into packets.
IP - Finds a computer on a network to route the packets of data to.

Layer 1 - Application Layer - Specific networking applications e.g. web browser, word processor
Layer 2 - Transport Layer - Breaks data down into packets and adds a sequence number to each packet, also adds source and destination ports.
Layer 3 - Network Layer - Adds the source IP address and the destination IP address to the packets.
Layer 4 - Link Layer - Adds source and host hardware addresses and puts packets on the cable.

Host Hardware - Media Access Control (MAC)

1 comment:

  1. Yep. What is a socket? (computer IP + port)
    Link layer could also place data onto the air in the case of wireless access

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