Computer networks connect computers and other devices together to share resources, information and services. They can be wired or wireless and configured in different network topologies. Networks are a must for businesses today, and help us communicate effectively, collaborate and collaborate efficiently. They also assist with access to data and security.
Computer networking is a broad subject that includes the conception the design, structure, and maintenance of communication networks. It is a combination of electrical engineering and telecommunications.
The most well-known computer network is the Internet which allows billions of users to connect and use the same resources simultaneously. The network uses a packet-switching model to guide data through an almost endless number of possible routes and connections. Each packet contains both control information and data from the user. Control information includes sources and destinations network addresses, error detection codes and sequencing information. The payload is the data portion of a byte.
In a typical network, a central server stores data and manages access by users to essential resources like printers photocopiers, and other files. The server is secured by firewalls and a multifactor authentication to ensure that only authorized users are able to access the network. Centralizing data on servers makes it easier for administrators and security policy enforcers to conduct regular backups. Additionally, it lets employees to access corporate applications and services regardless of their whereabouts, such as video-calling, document-sharing and other software.