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Data Communication and Networking Tutorials and Study Notes

Data Communication And Networking tutorials

Before Moving Ahead with the Data Communication And Networking tutorials, Lets have a look at what we will learn in these Topics.

Data Communication and Networking is the most lengthy but most important subject for the various Government Exams like IBPS IT Officer, Tech Related Government Exams,Data Communication and Networking Study Notes play vital role ,Taking in consideration the time limit of studying all the topics in detail,here we have made it available for the students ,The Study Notes has been taken from by Behrouz A. Forouzan a Well Known Author.Below is the list of Data communication and Networking Study Notes Chapter Wise.

By the end of this Subject, we will be able to learn:

Data Communication and Networking – Networking Components study Notes

Introduction HILI subcommittee (IEEE802.1) of the IEEE identified the following possible internetworking scenarios. A single LAN Two LANs connected together (LAN-LAN) A LAN connected to Read More »

Data Communication and Networking – Communication Protocols- X.25 Study Notes

 Introduction In the early 1970’s there were many data communication networks (also known as Public Networks), which were owned by private companies, organizations and governments Read More »

Data Communication and Networking – Short Notes -1

DATA COMMUNICATION AND NETWORK CONCEPTS Network The collection of interconnected computers is called acomputer network. Two computers are said to be interconnected if they are Read More »

Communication and Networking – Short Notes -2

Network Security Concepts: Viruses: Viruses are programs which replicate and attach to other programs in order to corrupt the executable codes. Virus enters the computer Read More »

Data Communication and Networking – Network Models Study Notes

  The International Standards Organization created a model called the Open Systems Interconnection, which allows diverse systems to communicate.   The seven-layer OSI model provides Read More »

Data Communication and Networking – Data and Signals Study notes

Data must be transformed to electromagnetic signals to be transmitted.   Data can be analog or digital. Analog data are continuous and take continuous values. Read More »

Data Communication and Networking – Digital Transmission Study Notes

Digital-to-digital conversion involves three techniques: line coding, block coding, and scrambling.   Line coding is the process of converting digital data to a digital signal. Read More »

Data Communication and Networking – Analog Transmission Study Notes

Digital-to-analog conversion is the process of changing one of the characteristics of an analog signal based on the information in the digital data.   Digital-to-analog Read More »

Data Communication and Networking – OSI Model Study Notes

OPEN SYSTEMS INTER CONNECTION REFERENCE MODEL (OSIRM )   Introduction to OSI Model & its layers The Open Systems Interconnection (OSI) Model was developed by International Read More »

Data Communication and Networking – Bandwidth Utilization Multiplexing and Spreading Study Notes

Bandwidth utilization is the use of available bandwidth to achieve specific goals. Efficiency can be achieved by using multiplexing; privacy and antijamming can be achieved Read More »

Data Communication and Networking – Transmission Media Study Notes

Transmission Medium: One which carries a signal from one computer to another.   Wired Transmission Media: Twisted Pair, Coaxial , Fibre Optic , Ethernet cable Read More »

Data Communication and Networking – Switching network Study Notes

  A switched network consists of a series of interlinked nodes, called switches. Traditionally’ three methods of switching have been important: circuit switching, packet switching, Read More »

Data Communication and Networking – Telephone and Cable Networks for Data Transmission Study Notes

  The telephone, which is referred to as the plain old telephone system (POTS), was originally an analog system. During the last decade, the telephone Read More »

Data Communication and Networking – Error Detection and Correction Study Notes

Data can be corrupted during transmission. Some applications require that errors be detected and corrected.   In a single-bit error, only one bit in the Read More »

Data Communication and Networking – Data Link Control Study Notes

Data link control deals with the design and procedures for communication between two adjacent nodes: node-to-node communication.   Framing in the data link layer separates Read More »

Data Communication and Networking – Basics Study Notes

  Data communications are the transfer of data from one device to another via some form of transmission medium. A data communications system must transmit Read More »

Data Communication and Networking – Multiple Access Protocol Study Notes

Multiple Access Protocol We can consider the data link layer as two sublayers. The upper sublayer is responsible for data link control, and the lower Read More »

Data Communication and Networking – Wired LANs: Ethernet Study Notes

Ethernet is the most widely used local area network protocoL   The IEEE 802.3 Standard defines I-persistent CSMA/CD as the access method for first-generation 10-Mbps Read More »

Data Communication and Networking – Wireless LANs Study Notes

  The IEEE 802.11 standard for wireless LANs defines two services: basic service set (BSS) and extended service set (ESS).   The access method used Read More »

Data Communication and Networking – Connecting LANs, Backbone Networks, and Virtual LANs Study Notes

A repeater is a connecting device that operates in the physical layer of the Internet model. A repeater regenerates a signal, connects segments of a Read More »

Data Communication and Networking – Cellular Telephone and Satellite Networks Study Notes

Cellular telephony provides communication between two devices. One or both may be mobile.   A cellular service area is divided into cells.   Advanced Mobile Read More »

Data Communication and Networking – SONET ISDH Study Notes

Synchronous Optical Network (SONET) is a standard developed by ANSI for fiber-optic networks: Synchronous Digital Hierarchy (SDH) is a similar standard developed by ITU-T. SONET Read More »

Data Communication and Networking – Virtual-Circuit Networks Frame Relay and ATM Study Notes

Virtual-circuit switching is a data link layer technology in which links are shared. A virtual-circuit identifier (VCI) identifies a frame between two switches. Frame Relay Read More »

Data Communication and Networking – Network Layer: Logical Addressing Study Notes

At the network layer, a global identification system that uniquely identifies every host and router is necessary for delivery of a packet from host to Read More »

Data Communication and Networking – Network Layer: Internet Protocol Study Notes

IPv4 is an unreliable connectionless protocol responsible for source-to-destination delivery. Packets in the IPv4 layer are called datagrams. A datagram consists of a header (20 Read More »

Data Communication and Networking – Network Layer: Address Mapping, Error Reporting, and Multicasting Study Notes

Delivery of a packet to a host or router requires two levels of addresses: logical and physical. A physical address identifies a host or router Read More »

Data Communication and Networking – Network Layer: Delivery, Forwarding, and Routing Study Notes

The delivery of a packet is called direct if the deliverer (host or router) and the destination are on the same network; the delivery of Read More »

Data Communication and Networking – Process-to-Process Delivery: UDp, TCp, and SCTP Study Notes

In the client/server paradigm, an application program on the local host, called the client, needs services from an application program on the remote host,’ called Read More »

Data Communication and Networking – Congestion Control and Quality of Service Study Notes

The average data rate, peak data rate, maximum burst size, and effective band width are qualitative values that describe a data flow. A data flow Read More »

Data Communication and Networking – Security in the Internet: IPSec, SSUTLS, PGp, VPN, and Firewalls Study Notes

IP Security (IPSec) is a collection of protocols designed by the IETF (Internet Engineering Task Force) to provide security for a packet at the network Read More »

Data Communication and Networking – Domain Name System Study Notes

The Domain Name System (DNS) is a client/server application that identifies each host on the Internet with a unique user-friendly name. DNS organizes the name Read More »

Data Communication and Networking – Remote Logging, Electronic Mail, and File Transfer Study Notes

TELNET is a client/server application that allows a user to log on to a remote machine, giving the user access to the remote system.   Read More »

Data Communication and Networking – WWW and HTTP Study Notes

Lets See some Basic WWW HTTP study notes   The World Wide Web (WWW) is a repository of information linked together from points all over Read More »

Data Communication and Networking – Network Management: SNMP Study Notes

The five areas comprising network management are configuration management, fault management, performance management, accounting management, and security management. Configuration management is concerned with the physical Read More »

Data Communication and Networking – Multimedia Study Notes

Audio/video files can be downloaded for future use (streaming stored audio/video) or broadcast to clients over the Internet (streaming live audio/video). The Internet can also Read More »

Data Communication and Networking – Security – Cryptography Study Notes

Cryptography is the science and art of transforming messages to make them secure and immune to attacks. The plaintext is the original message before transformation; Read More »

Data Communication and Networking – Network Security Study Notes

Cryptography can provide five services. Four of these are related to the message exchange between Alice and Bob. The fifth is related to the entity Read More »

Data Communication and Networking – Network Topologies Study Notes

Topology is the pattern of interconnection of nodes in a local area network(LAN). The topology used helps to select the communication medium and the other Read More »

Data Communication and Networking – Network Protocols Study Notes

A protocol is the special set of rules that two or more machines on a network follow to communicate with each other. They are the standards that Read More »

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