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Computer networks connect computers and other devices to share information, resources and services. They can be built on wireless or wired connections and can be set up in various network topologies. Networks are today essential for business. They enable us to communicate more efficiently, collaborate with other people and perform more efficiently. They also aid in data security and accessibility.
Computer networking is a broad field that includes the creation as well as the maintenance and construction of communication networks. It is a combination of electrical and computer science. engineering.
The most famous computer network is the Internet which allows millions of users to connect and access the same resources simultaneously. The network utilizes a packet-switching model to direct data traffic through a nearly infinite number of pathways and connections. Each packet contains control information and user data. The control information contains the source and destination network address and error detection codes and sequencing information. The data part of a packet is the payload.
In a typical network central servers store data and manages access by users to essential resources such as printers, photocopiers, and files. The server is protected with firewalls and multifactor authentication systems to ensure that only authorized users of the network can access it. All the data is centralized on servers also allows administrators to carry out regular data backups and enforce strict security measures for the network. It also lets employees access corporate services and apps regardless of where they are located — such as video-calling and document-sharing software.