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Author - Santhakumar Raja

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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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Point-to-Point Protocol PPP frame format
  • Computer Science

The Point-to-Point Protocol (PPP) – theteche.com

July 2, 2022
by Santhakumar Raja
4 min read
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Many point-to-point datalink layers have been developed, starting in the 1960s. In this section, we focus on the protocol that are often used to transport IP packets between hosts or routers that are directly connected by a...

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Collision Avoidance
  • Computer Science

Carrier Sense Multiple Access with Collision Avoidance

June 30, 2022
by Santhakumar Raja
6 min read
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The Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) Medium Access Control algorithm was designed for the popular WiFi wireless network technology. CSMA/CA also senses the transmission channel before transmitting...

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The worst collision on a shared bus
  • Computer Science

Carrier Sense Multiple Access with Collision Detection

June 30, 2022
by Santhakumar Raja
10 min read
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Carrier Sense Multiple Access (CSMA) improves channel utilization compared to ALOHA. However, the performance can still be improved, especially in wired networks. Consider the situation of two terminals that are connected to the...

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  • Computer Science

ALOHA in Computer Network – theteche.com

June 30, 2022
by Santhakumar Raja
5 min read
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In the 1960s, computers were mainly mainframes with a few dozen terminals attached to them. These terminals were usually in the same building as the mainframe and were directly connected to it. In some cases, the terminals were...

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Organisation of a small Internet
  • Computer Science

Routing in IP networks – theteche.com

June 28, 2022
by Santhakumar Raja
3 min read
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In a large IP network such as the global Internet, routers need to exchange routing information. The Internet is an interconnection of networks, often called domains, that are under different responsibilities. As of this writing...

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IPv4 on point-to-point links
  • Computer Science

Interactions Between IPv4 and the Datalink Layer

June 26, 2022
by Santhakumar Raja
4 min read
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As mentioned in the first section of this chapter, there are three main types of datalink layers : point-to-point links, LANs supporting broadcast and multicast and NBMA networks. There are two important issues to be addressed...

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Virtual circuit establishment
  • Computer Science

Organisation of the Network Layer – theteche.com

June 26, 2022
by Santhakumar Raja
9 min read
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There are two possible internal organisation of the network layer : Datagram Virtual circuits The internal organisation of the network is orthogonal to the service that it provides, but most of the time a datagram organisation...

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Utilization of the TCP source and destination ports
  • Computer Science

TCP Connection Establishment in Computer Networks

June 24, 2022
by Santhakumar Raja
6 min read
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A TCP connection is established by using a three-way handshake. The connection establishment phase uses the sequence number, the acknowledgment number and the SYN flag. When a TCP connection is established, the two communicating...

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Transmission Control Protocol Header Format
  • Computer Science

The Transmission Control Protocol (TCP) – theteche.com

June 21, 2022
by Santhakumar Raja
4 min read
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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...

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