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Archive - June 2022

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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Usage of the User Datagram Protocol (UDP) port numbers
  • Computer Science

The User Datagram Protocol (UDP) – theteche.com

June 20, 2022
by Santhakumar Raja
5 min read
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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...

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Finite state machine of the simplest transport protocol
  • Computer Science

Reliable Data Transfer on Top of a Perfect Network Service

June 19, 2022
by Santhakumar Raja
4 min read
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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...

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  • Preservation of Pharmaceutical Products Using Antimicrobial Agents Preservation of Pharmaceutical Products Using Antimicrobial Agents
    by Santhakumar Raja
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    by Santhakumar Raja
  • Standardisation of Amino Acids Standardisation of Amino Acids – theteche.com
    by Santhakumar Raja
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  • Different Sources of Contamination in an Aseptic Area Different Sources of Contamination in an Aseptic Area
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