What Is A Network?

CCNA 200-301

CCNP Enterprise

CCNP Security

CCIE Enterprise Lab

CCIE Security Lab

CCNP Service Provider

CCNP Data Center

CCNP Collaboration

CCIE DC Lab

2019-09-18

A computer network can be described as a system of interconnecting devices that can communicate using some common standards, known as protocols. These devices communicate to exchange resources (such as files and printers) and services.

Here is an example network consisting of two computers connected together:

In the above example, two computers are directly connected using a cable. This small network can be used to exchange data between the two computers.

What if we want to expand our network? Then we can use a network device, either a switch or a hub, to connect more than two computers together:

Now all of the devices on the network can communicate with each other.

We will discuss hubs and switches more in a short period of time. Now, keep in mind that these devices are the center of all computer connections.

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