Port Number and Address

Introduction The list of port numbers is specified in RFC (Both client and server must state the HTTP version of their request or response in the first line of their message. Internet Society and IETF (Internet Engineering Task Force) Request for Comments documents (known as RFCs) provide the official definitions for the Read more…

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Application Layer TCP/IP

Introduction Features It provide services to the application software running on a computer. The application Layer identifies the application running on the computer through Port Numbers. Protocols The list of some important application layer’s protocols are – Telnet, FTP, TFTP, HTTP, NFS, SMTP, POP3, DNS, DHCP, BOOTP, SNMP etc. Telnet Read more…

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Transport Layer TCP/IP

Introduction It is also called the host-to-host layer. Features It is responsible for end-to-end data delivery/integrity. Transport Layer identifies the data/segments through Socket address (combination of port number & I.P. address). Protocols The list of some important transport layer’s protocols are – TCP, UDP etc.

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Internet/Network Layer TCP/IP

Introduction of TCP/IP Network Layer Features of TCP/IP Network Layer Message delivery at the network layer does not give any guarantee. It examines network or logical addresses in the data instead of physical addresses seen in the Data Link layer. The network layer establishes, maintains, and terminates logical and/or physical connections. The Read more…

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