Question

In five to ten sentences, describe how computer networks work.

Answer 1

Computer networks operate by connecting multiple devices, such as computers, servers, and routers, to facilitate communication and resource sharing. At the core of a network is the transmission of data, which is often encapsulated in packets that travel across various communication mediums, such as cables, fiber optics, or wireless signals. Each device on the network is assigned a unique identifier, known as an IP address, which allows it to send and receive data accurately.

Data is transmitted using established protocols, such as TCP/IP, which ensure reliable and orderly communication. When a device wants to communicate with another, it sends a request that is routed through intermediary devices, such as switches and routers, which direct the data to its destination. Network topology, which refers to the arrangement of different elements, influences performance and reliability. Networks can be local (LAN), spanning a building, or wide-area (WAN), covering larger geographical areas.

Security measures, like firewalls and encryption, are employed to protect sensitive information. Overall, computer networks enable seamless sharing of resources, including files, applications, and internet access, enhancing efficiency and collaboration in various environments.