What is computer networking?

Computer networking is a connection of one or more computer in order to share data. Networks are built with mix of computer hardware and computer software. In this system we can share our files both local and online. This is system is very advantage especially to the people that own their business it is because we can centralize all our data using one system by using computer networking. For an example online banking system without networking data cannot be centralized in this case you can encounter confliction of data.

What is advantage of computer networking?

File Sharing – The major advantage of a computer network is that is allows file sharing and remote file access. A person sitting at one workstation of a network can easily see the files present on the other workstation, provided he is authorized to do so. We can also share our hardware for example printer, scanner, hardisk, flash drive and etc.

Increase storage capacity - As there is more than one computer on a network which can easily share files, the issue of storage capacity gets resolved to a great extent. A standalone computer might fall short of storage memory, but when many computers are on a network, memory of different computers can be used in such case. One can also design a storage server on the network in order to have a huge storage capacity

Increase cost Efficiency - There are much software available in the market which are costly and take time for installation. Computer networks resolve this issue as the software can be stored or installed on a system or a server and can be used by the different workstations

What is the disadvantage of computer networking?

Computer Virus – If computers are involve to a network sharing of files is very dangerous specially to the files that contains lot of virus. Since the computer is in a network the virus is also moving in a network so there is a possibility that all computers in a network will encounter virus.

Security Issue – Since the files is being share your important file is not safe because if your files is share in  a network all confidential files is open to everyone. Or  a files that is very important to you and it was change by other user because of a network.

Dependent  on the Main Server – In networking there is a server that contains all the data in the network the problem is if the computer server encounter  virus, all the computer connected in the network will contain virus. Slow performance of the server will give problem to the client computer

Expensive Setup – In networking files are all share but this kind of system needs lot of money we are using lot of devices in order to create a nice and powerful network.

What are the components to create a Computer Network?

Computer – Computer is a device that accepts information it can receives process and presents data. We also have computer hardware and computer software in order to interact user.

Software – Is a computer application or a program that use to create a file they are so many time of software application for example Business Application Software use to create a documentary files, Programming Application use to create a program that we can use in a business.

Hardware -  is the physical part of the computer for example monitor,mouse,keyboard and etc.

Hardwares that we can use in networking.

LAN CABLE – Local Area Networks or LAN Cables  can connects a massive number of personal computers, printers, file servers, and workstations in  one network

VPN – Virtual Private Network or VPN is a hardware devices that we can use to create a bridge in a network.  VPN can create a tunnel that allow us to connect lot of network

SWITCH – Switch is a computer hardware that create a lot of network. If we have ten computers then only one computer can connect to internet. In this hardware all ten computers can connect to internet. Connect the switch to a router the from router to a modem.

ROUTER - are physical devices that join multiple wired or wireless networks together. Technically, a wired or wireless router is a Layer 3 gateway, meaning that the wired/wireless router connects networks (as gateways do), and that the router operates at the network layer of the OSI model.

MODEM - is a device that modulates an analog carrier signal to encode lot of digital information  and also demodulates such a carrier signal to decode the transmitted information. The very goal is to produce a signal that can be transmitted easily and decoded to reproduce the original digital data. Modems can be used over any means of transmitting analog signals, from driven diodes to radio.

COMPUTER SERVER – We can put all our files that we can share in the computer server. We can also share hardware in computer server

COMPUTER CLIENTS  -  Is a computer that will connect to a computer server to gain access to the files that share in the computer server.