Computer networks connect computers and other devices to share resources, information and services. They can be wireless or wired and configured to work in a variety of network topologies. Networks are crucial for business today. They allow us to communicate with each other, collaborate and work efficiently. They also assist with access to data and security.

Computer networking is a broad subject that includes the conception of architecture, design, and maintenance of communication networks. It is a blend of computer science, electrical engineering, and telecommunications.

The Internet is the most famous computer network that allows billions of users to connect and share the same resources simultaneously. The network uses a packet switching model to direct data traffic through a near infinite number of pathways and connections. Each packet contains both control information as well as data https://boardroomco.net/how-to-normalize-data-in-excel/ from the user. The control information includes address of the network that is used to connect to the source and destination, error detection codes and sequencing information. The data part of a packet is the payload.

In a typical network, central servers store information and controls access for users to vital resources like printers photocopiers, and other files. The server is protected by firewalls and a system of multifactor authentication to ensure that only authorized users have access to access the network. Centralizing information on servers makes it easier for administrators and security policy enforcers to perform regular backups. It also lets employees access corporate services and applications, regardless of where they are for example, video-calling software as well as document-sharing.