Santhakumar Raja

The Transmission Control Protocol (TCP) was initially defined in RFC 793. Several parts of the protocol have been improved since the publication of the original protocol specification. However, the basics of the protocol remain and an implementation that only supports RFC 793 should inter-operate with today’s implementation. TCP provides a reliable bytestream, connection-oriented transport service

The User Datagram Protocol (UDP) is defined in RFC 768. It provides an unreliable connectionless transport service on top of the unreliable network layer connectionless service. The main characteristics of the UDP service are : The UDP service cannot deliver SDUs that are larger than 65507 bytes The UDP service does not guarantee the delivery

The transport layer entity interacts with both a user in the application layer and an entity in the network layer. According to the reference model, these interactions will be performed using DATA.req and DATA.ind primitives. However, to simplify the presentation and to avoid confusion between a DATA.req primitive issued by the user of the transport

As the transport layer is built on top of the network layer, it is important to know the key features of the network layer service. There are two types of network layer services : connectionless and connection oriented. The connectionless network layer service is the most widespread. Its main characteristics are : the connectionless network

What are the main methods supported by the first version of the HyperText Transfer Protocol (HTTP) defined in RFC 1945? What are the main types of replies sent by a http server? System administrators who are responsible for web servers often want to monitor these servers and check that they are running correctly. As a

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