Best Computer Network Hand Written Note

What is a Computer Network?

Here, we provided to Best Computer Network Hand Written Note. A computer network is a set of computers connected together for the purpose of sharing resources. The most common resource shared today is a connection to the Internet. Other shared resources can include a printer or a file server. The Internet itself can be considered a computer network.

best computer network hand written noteA computer network is a set of connected computers. Computers on a network are called nodes. The connection between computers can be done via cabling, most commonly the Ethernet cable, or fiber optic cable. Connections can also be wireless; you’ll hear the term wi-fi to describe information sent via radio waves.

Connected computers can share resources like access to the Internet, printers, file servers, and others. A network is a multipurpose connection, which allows a single computer to do more than it could without any connection (what could you really do without an Internet connection?)

A computer network is a group of computers that use a set of common communication protocols over digital interconnections for the purpose of sharing resources located on or provided by the network nodes. The interconnections between nodes are formed from a broad spectrum of telecommunication network technologies, based on physically wired, optical, and wireless radio-frequency methods that may be arranged in a variety of network topologies. Free download PDF Best Computer Network Hand Written Note.

The nodes of a computer network may be classified by many means as personal computers, servers, networking hardware, or general-purpose hosts. They are identified by hostnames and network addresses. Hostnames serve as memorable labels for the nodes, rarely changed after initial assignment. Network addresses serve for locating and identifying the nodes by communication protocols such as the Internet Protocol.






A network may be small where it may include just one system or maybe as large as what one may want. The nodes may further be classified into various types. These include:

  • Personal Computers
  • Servers
  • Networking Hardware
  • General Hosts
Networking can be classified into three types:
  • Types of Computer Networks
  • Topology
  • Interpreters

Types of Computer Networks:

There are five main types of Computer Networks:

  • LAN (Local Area Network) 
  • PAN (Personal Area Network) 
  • MAN (Metropolitan Area Network) 
  • WAN (Wide Area Network) 
  • VPN (Virtual Private Network)

Network Topologies:

Given below are the eight types of Network Topologies:

  • Point to Point Topology
  • Bus Topology
  • Mesh Topology
  • Ring Topology
  • Star Topology 
  • Tree Topology 
  • Line Topology
  • Hybrid Topology

Computer networks may be classified by many criteria, for example, the transmission medium used to carry signals, bandwidth, communications protocols to organize network traffic, the network size, the topology, traffic control mechanism, and organizational intent. Free download PDF Best Computer Network Hand Written Note.

Computer networks support many applications and services, such as access to the World Wide Web, digital video, digital audio, shared use of application and storage servers, printers, and fax machines, and use of email and instant messaging applications. Free download PDF Best Computer Network Hand Written Note.

Network Devices:

Discussed below are a few important network devices from the exam point of view:

  • Network Repeater 
  • Network Hub
  • Network Switch
  • Network Router 
  • Network Bridge 
  • Modem 

Uses of Computer Networks:

The computer networks are playing an important role in providing services to large organizations as well as to the individual common man. Free download PDF Best Computer Network Hand Written Note.

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