Friday, 23 August 2013

The TCP/IP Protocol Suite - Computer Networking Training in Chennai

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The TCP/IP suite of protocols provides a set of standards for how operating systems and applications communicates and how networks are interconnected. The TCP/IP suite of protocols maps to a four-layer conceptual model known as the Department of Defense (DOD) model. The four layers are as follows:

Network Access Layer – The network access layer is responsible for placing data on the network medium and receiving data off the network medium. This layer contains physical devices such as network cables and network adapters.

Internet Layer – The internet layer is responsible for addressing, packaging, and routing the data that is handed down to it from the transport layer. There are four core products in this layer: IP Address Resolution Protocol (ARP), Internet Control Message Protocol (ICMP), and Internet Group Management Protocol (IGMP)

Transport Layer – The transport layer protocols provide communication sessions between computers. The desired method of data delivery determines the transport protocol. The two transport layer protocols are TCP and User Datagram Protocol(UDP).

Application Layer – At the top of the model is the application layer, in which applications gain access to the network. There are many standard TCP/IP tools and services in the application layer, such as File Transfer Protocol (FTP), Telnet, Simple Network Management Protocol (SNMP), DNA, and so on.

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