Computer networks link computers and other devices together to share information, resources and services. They can be based on wired or wireless connections, and can be configured in a variety of network topologies. Nowadays, networks are essential to the business. They allow us to communicate more efficiently, collaborate with other people and work more efficiently. They also aid with data security and access.
Computer networking is a broad field that covers the ideation, architecture, creation and maintenance of communication networks. It is a combination of electrical engineering, and telecommunications.
The Internet is the most renowned computer network, allowing billions of users to connect and share resources at the same time. The network uses a packet switching model to guide data traffic through an almost limitless number of possible connections and pathways. Each packet contains control information as well user information. The control information comprises source and destination network addresses, error detection codes and sequencing information. The find this data part of a packet is the payload.
In a typical business network there is a central server that stores data and manages user access to critical resources like photocopiers, printers, files and printers. The server is protected by firewalls and a system of multifactor authentication to ensure that only authorized users are able to access the network. The centralization of information on servers allows administrators and security policy enforcers to perform regular backups. Additionally, it lets employees to access corporate apps and services regardless of location, for instance video-calling software and document-sharing software.
