Computer Network| components of computer Network.

 

  Computer network 

The group of interconnected computers and other hardware by means of transmission media in order to communicate and share resources is known as computer network.

Services provided by computer network 

1. Print services:It include a sharing of printers.
2. Message service:it includes sharing of message like e-mail. 
3. File service:it includes sharing of files.
4.  Application services:it includes sharing of application programs accessed by users.
5.  Database of services:it helps in managing, modifying and distributing the data.

Advantages of computer network.

1. Hardware sharing.
2. Data and software sharing.
3. Cost effective
4. Access to remote database 
5. Increased storage capacity 
6. Communicational facilities

Disadvantages of computer network.

1. Computer virus transfer.
2. Less reliability.
3. Loss of data.
4. Need of skilled manpower.
5. Cyber crime may occur

Components of computer network

Client (workstation):Client mean user. The computer where the client works is workstation. It request or utilizes the resources of the server. Clients are the computer in which user run applications.

Server: It is the main computer which response or provides services to other computers. It is a powerful computer having higher processing and storage capacity. Operating system like Linux, unix, windows NT server, Novell NetWare etc.

Types of server 

Non dedicated server: it controls and provides services to the workstation as well as can be used as a workstation. For eg: windows NT server, Advanced 2000 server etc. are non dedicated server.

Dedicated server: it controls and provides services to the workstation but cannot be used as workstation. It is a powerful computer. For eg: Novell NetWare, unixare dedicated server.

Server

Server is a program or device that controls client computers and serves sharing of hardware and software.

Difference between Non dedicated server and Dedicated server.

 Non dedicated server

1. Acts as server ONLY
2. Uses specialised software
3. Very high quality hardware
4. Huge backup plan
5. Handles massive clients
6. E.G.:Novell net ware server, UNIX.

Dedicated server 

1. Acts as server as well as workstation.
2. Uses general software.
3. Standard quality hardware.
4. May be no backup.
5. Handles limited clients.
6. E.G.:Windows2000 server.

WORKSTATION.

• Workstation is single computer of a network that uses the resources and services of the same network.
•  Workstation without system unit is called ‘Dummy Workstation’. 
• Workstation is also called ‘Client Computer/Front-end’. 
• Workstation uses general operating system like Windows 7, Windows 8, Windows 10 e.t.c.

NIC (network Interface Card).

1. A network interface card (NIC) is a hardware component without which a computer cannot be connected over a network.
2. It is a circuit board installed in a computer that provides a dedicated network connection to the computer.
3. It is also called network interface controller, network adapter or LAN adapter.

Media connector:it is a device through which various components of computer networks are connected. It is used to connect the computer in a network. 

Some of connector are: 

• Rj-45(Registered Jack) used in UTP cabling.
• ST Connector: used in fiber optic cable.
• BNC (British Naval Connector) : used in co-axial cable.

Author Spotlight

Santosh Chapagain
Gmail: chapagainsantoshcs@gmail.com
Phone no: +977-9863512955