What is a Computer Network?


A computer network is something that people use in their day-to-day lives, some without realizing it. If you are browsing online for your next great outfit or simply sending an email or text to a work colleague or friend, you are using a network. A network is simply two or more computers that are linked to share resources. Networks are most commonly broken up into two types, Local Area Networks (LANs) or Wide Area Networks (WANs).

What is that you may ask?

Before understanding what a LAN or a WAN is, it’s important to understand how a network is created. Companies like Cisco Systems create a network using core infrastructure products such as routers, switches, and wireless devices. A router is a device that communicates between the internet and the devices in your home or business that connect to the internet. A switch is used in a wired network to connect to other devices using Ethernet cables. The switch allows a connected device to talk to others.

What is a Local Area Network (LAN)?

A local area network is a network that connects computers and other devices within a limited area such as a residence, school, laboratory, university campus, or office building. A LAN basically enables multiple devices to share access to printers, routers, and so on using switches.

What is a Wide Area Network (WAN)?

In its simplest form, a WAN is a collection of LANs or other networks that communicate with one another. Technically the world wide web, or Internet, is a giant WAN, enabling you to connect to your colleagues and family around the globe – from your LAN to theirs, using routers to connect to the internet.

How Networks Changed the World?

Considering that a network is used to send emails, videoconference, access your favourite social media platforms, and even order takeout, it’s quite easy to see how it has changed the world. Today, most people can’t imagine having to write a handwritten letter and post it off to the specific receiver, everything is about speed and instant results. Networks are behind all of this. Using a network will save you and a business time, money, and effort with daily activities.

Would You Like to Work In Networking?

Working in tech is something many people aspire to do. It’s a great career opportunity and one that is going to grow as the world embraces the fourth industrial revolution. As a network engineer, you’ll have responsibility for setting up, developing, and maintaining computer networks within an organisation or between multiple organisations. You’ll offer support to users, who can be staff, clients, customers, and suppliers, and troubleshoot any problems that arise. Working in a networking role, you will be responsible for the smooth running of your clients’ networks.

Networking jobs include:

  • Network and Computer Systems Administrators
  • Wireless Network Engineer
  • System Engineer
  • Database Administrator
  • Network Programmer
  • Network Service Technician
  • Network Security Administrator
  • Telecommunications Specialist

There are 1.9 million powerful reasons to pursue a challenging career in IT networking. That’s how many IT-related job openings are available, and Network Administrator roles are among the hardest to fill. How do you get in the door?

The following certifications will help you take your first steps into a networking career.