Computer networks connect devices, computers and other computers to share resources, information and services. They can be built on wireless or wired connections and are able to be configured in many different network topologies. Networks are crucial for business today, and help us communicate, collaborate and work more efficiently. They also aid in data security and access.

Computer networking is an extensive field that includes the creation and maintenance of communication networks. It is a combination of computer science and electrical engineering.

The Internet is the most well-known computer network that allows billions of users to connect and share resources simultaneously. The network utilizes a packet switching model to direct data traffic through an almost infinite number of connections and routes. Each packet contains control information and information from the user. The control information includes the source and destination network address, error detection codes, and sequencing information. The data part of a packet is the payload.

In a typical business network, there is a central server that stores information and controls access to essential resources like photocopiers, printers, files and printers. The server is secured by firewalls and a system of multifactor authentication to ensure that only authorized users have access to access the network. Keeping all the information centralized on servers also allows administrators to conduct regular backups of their data and enforce strict security guidelines for the network. Additionally, it allows employees to access corporate apps and services regardless of their location, for instance video-calling and document sharing software.

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