Computer networks connect computers and other devices to share information, resources and services. They can be based on wired or wireless connections and can be configured in many different network topologies. Networks are vital to business today, and help us communicate with each other, collaborate and work efficiently. They also aid in access to data and security.
Computer networking is a broad field that encompasses the concept of architecture, design, and maintenance of communication networks. It is a blend of electrical engineering, and telecommunications.
The Internet is the most famous computer network that allows billions of people to connect and share the same resources simultaneously. The network uses a packet switching model to funnel data traffic through a near endless number of possible routes and connections. Each packet includes control information and user information. The control information includes the source and destination network address as well as error detection codes and sequencing information. The data portion of a packet contains the payload.
In a typical network central servers store information and controls access for users to critical resources such as printers, photocopiers, as well as files. The server is secured by firewalls and a multifactor authentication to ensure that only authorized users can access the network. Centralizing all data on servers also helps administrators to perform regular backups of their data, and to enforce strict security measures for the network. Employees can also access corporate services and applications, regardless of where they are for example, video-calling software or document-sharing.
www.boardroomco.net/why-is-firefox-so-slow-and-how-to-deal-with-it