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Category - Computer Science

Position of IP in TCP- Internet Protocol (IP) suite
  • Computer Science

Introduction to Internet Protocol (IP)

August 8, 2022
by Santhakumar Raja
2 min read
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The Internet Protocol (IP) is the transmission mechanism used by the TCP/IP protocols at the network layer. Figure shows the position of IP in the suite. IP is an unreliable and connectionless datagram protocol a best effort...

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Direct delivery
  • Computer Science

Delivery and Forwarding of IP Packets

August 2, 2022
by Santhakumar Raja
5 min read
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Delivery The network layer supervises the handling of the packets by the underlying physical networks. We define this handling as the delivery of a packet. The delivery of a packet to its final destination is accomplished using...

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Subnetting
  • Computer Science

Three Level Addressing – Subnetting

July 26, 2022
by Santhakumar Raja
4 min read
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As we discussed before, the IP addresses were originally designed with two levels of addressing. To reach a host on the Internet, we must first reach the network and then the host. It soon became clear that we need more than two...

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Two level addressing in classful addressing
  • Computer Science

Two Level Addressing in IPv4

July 21, 2022
by Santhakumar Raja
8 min read
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Two level addressing : The whole purpose of IPv4 addressing is to define a destination for an Internet packet (at the network layer). When classful addressing was designed, it was assumed that the whole Internet is divided into...

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A connectionless packet switched network
  • Computer Science

Packet Switching at Network Layer

July 17, 2022
by Santhakumar Raja
8 min read
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The network layer is designed as a packet switched network. This means that the packet at the source is divided into manageable packets, normally called datagrams. Individual datagrams are then transferred from the source to the...

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Wireless LANs
  • Computer Science

Wireless LANs

July 13, 2022
by Santhakumar Raja
7 min read
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Wireless communication is one of the fastest-growing technologies. The demand for connecting devices without the use of cables is increasing everywhere. Wireless LANs can be found on college campuses, in office buildings, and in...

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  • Computer Science

Functions of Layer in the OSI Model

July 10, 2022
by Santhakumar Raja
10 min read
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In this section we briefly describe the functions of each layer in the OSI model. Physical Layer The physical layer coordinates the functions required to carry a bit stream over a physical medium. It deals with the mechanical and...

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Open System Interconnection
  • Computer Science

The Open System Interconnection (OSI) Model

July 10, 2022
by Santhakumar Raja
6 min read
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Established in 1947, the International Standards Organization (ISO) is a multinational body dedicated to worldwide agreement on international standards. Almost three-fourths of countries in the world are represented in the ISO...

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The internet today
  • Computer Science

Transmission Control Protocol/Internetworking Protocol (TCP/IP)

July 7, 2022
by Santhakumar Raja
6 min read
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Cerf and Kahn’s landmark 1973 paper outlined the protocols to achieve end-to-end delivery of data. This was a new version of NCP. This paper on transmission control protocol (TCP) included concepts such as encapsulation, the...

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  • Computer Science

Glossary for Computer Network – theteche.com

July 5, 2022
by Santhakumar Raja
12 min read
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Terminology in Computer Networking AIMD – Additive Increase, Multiplicative Decrease. A rate adaption algorithm used notably by TCP where a host additively increases its transmission rate when the network is not congested...

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