Notes

Types of Network Topologies (Bus, Ring and Star)

Types of Network Topologies (Bus, Ring and Star)

NETWORK TOPOLOGIES: The term topology refers to the way a network is laid out.OR Cabling layout of a Network is called Network Topology.OR Physical layout of a network is called Network Topology. Network topologies are o Bus Topology or Linear Topology o Star Topology o Ring or Token Topology o Mesh Topology o  Tree Topology Bus Topology: All Computers will ...

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What is Metropolitan Area Network (MAN)?

Computer Notes

METROPOLITAN AREA NETWORK (MAN): A MAN interconnects different Sites, User Terminals, and enables LANs to Communicate with each other but within a city. It covers region larger than LAN but smaller than WAN. MANs normally covers an area of between 5 to 50 Km. Like WAN it is not owned by a single organization. Installation cost is high than LAN ...

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LAN vs WAN : What is the difference between LAN and WAN?

Computer Notes

Local Area Network (LAN) LAN normally operates within a compact area such as an Office Building or a Campus. LAN is capable of interconnecting a large number of computers and other devices within 1 Km. A LAN tends to use only one type of transmission medium. LANs are usually used for sharing printers, hard disk, hardware devices, and software applications ...

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What is Wide Area Network (WAN)? Uses, Advantages and Disadvantages

Computer Notes

Wide Area Network (WAN): WAN interconnects different Sites, User Terminals, and enable LANs to Communicate with each other. They exist in an unlimited geographical area. Used to Communicate to Nationwide or Worldwide. Transmission medium used are Telephone Lines, microwave and Satellite links. Devices used are HUB, Switches, Routers (etc.) Speed of Data Transmission is 1800 to 9600 bits per second. ...

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What is a Local Area Network (LAN)? Uses, Advantages and Disadvantages

Computer Notes

  Local Area Network (LAN) LAN normally operates within a compact area such as an Office Building or a Campus. LAN is capable of interconnecting a large number of computers and other devices within 1 Km. A LAN tends to use only one type of transmission medium. LANs are usually used for sharing printers, hard disk, hardware devices, and software ...

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What is Protocol? Types of Internet Protocols

Computer Notes

PROTOCOLS: Protocols are set of rules that transfer data from one location to another. Network has many protocols. o  TCP/IP o  IEEE 802.X Standard o IEEE 802.3 and 802.5 Standard o IEEE 802.6 Standard. TCP/IP: TCP/IP stands for transmission control protocol/Internet protocols. TCP/IP protocol communicates between two similar or dis-similar computer systems. Very popular protocol in large networks. It is ...

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ISO and OSI Network Model

ISO and OSI Network Model NOTES

  ISO and OSI Model: ISO Developed a standard for data communication called Open System Interconnection. OSI has seven layers. o  Physical Layer o  Data Link Layer o  Network Layer o  Transport Layer o  Session Layer o  Presentation Layer o  Application Layer Physical Layer: This layer deals with system of bits. Collect data from upper layer and send it to ...

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What is Network? Concept & Types of Computer Networks

Computer Notes

COMPUTER NETWORKS: Connection between two or more Computers, so that they can communicate with each other. Types of a network: Types of network are the following. LAN (Local Area Network) WAN (Wide Area Network) MAN (Metropolitan Area Network) Local Area Network (LAN): LAN is a network that spans limited physical area. LANs are usually used for sharing printers, hard disk, ...

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Data Communication & Computer Networking

Data Communication & Computer Networking Notes

 DATA COMMUNICATION: “Transferring of data from one point to other is called data communication”. BASIC ELEMENTS OF DATA COMMUNICATION: Three basic elements are 1) Transmitter or Sender: Who sends data called a Sender. 2) Medium: Which carries information called a Medium. Such as cables, air (etc) 3) Receiver: Which receives the information, called a Receiver. DATA COMMUNICATION MODES: There are ...

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Information Systems Development

ISD - Information Systems Development

  An Information System Collects, Maintains, and Provides information to people. Today, many information systems are computerized. Information systems are design for those people who have very little knowledge of information technology. The five phases of information system development are System Analysis System Design System Development System Implementation System Maintenance System Analysis: o The person who does analysis is called an ...

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