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1 Computer Networking

Pre-Processing
Pre-Processing
• Applications of Computer Networking • Networking Terminologies
• Types of Computer Networks • Components of Computer Network
• Network Topologies • Advantages of Computer Networking
• Disadvantages of Computer Networking

A computer network is a collection of computers or other devices that are connected to each other
in order to share data as well as hardware and software resources.
Internet is an example of a global computer network. A network can
be wired or wireless.
Computer networks are commonly used in educational institutes,
business houses, hospitals, financial organisations, and media houses.
Computer networks remove time and distance barriers all over the world
and allow users to share information and communicate with each other.

APPLICATIONS OF COMPUTER NETWORKING
The need to communicate with different people in different parts of the world is paramount in
today’s world. Computer networks provide a solution by allowing users to connect, communicate,
and share information and resources with each other.
1. Information and Resource Sharing − Computer networks allow organisations having units
which are placed apart from each other, to data, programs, software, and expensive hardware
among users.
2. Retrieving Remote Information − Through computer networks, users can retrieve information
on a variety of topics stored in remote databases to which the user gains access through
information systems like the World Wide Web.
3. Speedy Interpersonal Communication − Computer networks have increased the speed and
volume of communication like never before. Online communications have increased manifold
through social networking services.
4. E-Commerce − Computer networks have paved way for a
variety of business and commercial transactions online,
popularly called e-commerce. Users and organisations
can pool funds, buy or sell items, pay bills, manage bank
accounts, pay taxes, transfer funds, and handle investments
electronically.
5. Highly Reliable Systems − Computer networks allow systems
to be distributed in nature, so that data is stored in multiple
sources. This makes the system highly reliable.

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