Computer Network is a group of computers connected with each other through wires, optical fibres or optical links so that various devices can interact with each other through a network. The aim of the computer network is the sharing of resources among various devices. In the case of computer network technology, there are several types of networks that vary from simple to complex level.
A computer network is a set of devices connected through links. A node can be computer,
printer, or any other device capable of sending or receiving the data. The links connecting
the nodes are known as communication channels.
Computer Network uses distributed processing in which task is divided among several
computers. Instead, a single computer handles an entire task, each separate computer handles a subset.
Security: It provides limited interaction that a user can have with the entire system. For
example,
a bank allows the users to access their own accounts through an ATM without allowing them to access
the bank's entire database.
Faster problem solving: Multiple computers can solve the problem faster than a single machine
working
alone.
Security through redundancy: Multiple computers running the same program at the same time can
provide the security through redundancy. For example, if four computers run the same program and any
computer has a hardware error, then other computers can override it.
Computer networks serve various essential purposes, contributing to the efficiency and functionality of
modern systems. Some common uses of computer networks include:
Resource Sharing: Computer networks enable the sharing of resources such as files, printers,
and internet connections among connected devices. This facilitates collaborative work and efficient
utilization of resources.
Communication: Networks provide a means for communication through email, instant messaging,
video
conferencing, and other applications. This enhances real-time interaction and collaboration among
individuals and organizations, regardless of geographical distances.
Data Storage and Retrieval: Networks allow centralized data storage on servers, making it
easier
to manage and access files and information. This facilitates data backup, retrieval, and sharing among
users.
Internet Access: Computer networks provide connectivity to the internet, allowing users to
access
a vast amount of information, online services, and communication platforms.
Remote Access: Networks enable remote access to resources and systems, allowing users to
connect
to
their work or home networks from different locations. This is particularly valuable for telecommuting
and accessing data while on the go.
Collaboration and File Sharing: Networks support collaborative work environments where
multiple
users
can simultaneously work on and share documents, fostering teamwork and productivity.
Application Sharing: Certain network configurations allow the sharing of software
applications.
This can be cost-effective and efficient, as users can access applications installed on a central
server rather than installing them on individual devices.
Cost Efficiency: Networks can lead to cost savings by centralizing resources, reducing the
need
for
redundant equipment, and optimizing the use of hardware and software.
Automation and Control: In industrial settings, computer networks are used for automation and
control of
various processes, enhancing efficiency and precision in manufacturing and production.
Entertainment and Media Streaming: Home networks are often used for streaming media content,
such as music
and videos, to various devices, including computers, smart TVs, and mobile devices.
Overall, computer networks play a crucial role in facilitating communication, resource sharing, and collaboration in various sectors, contributing to the interconnected nature of the modern digital world.