Networks (OCR A Level Computer Science)

Networks

What is a Network?

• A network is a set of interconnected devices (such as computers, printers, and servers) designed to share resources, exchange data and communicate with each other

• The main purposes of a network are to enable data sharing, resource sharing, communication, and collaboration

Purpose & importance of protocols

• Network protocols  define the rules and formats that devices must follow to communicate with each other over the network

• They ensure successful and secure data transmission, and help maintain order and efficiency in communications

• Examples of protocols include HTTP, FTP, TCP/IP, and SMTP, among others

Understanding the term "standard"

• A standard in a network or any data transfer situation refers to a set of guidelines or frameworks that govern how a task should be performed or how a product should function

• Standards ensure compatibility, interoperability, and consistency across different devices and software

Purpose & need for standards in a network

• Standards enable different network devices, regardless of their manufacturer or model, to work together seamlessly

• They ensure that data can be correctly interpreted and processed by the receiving device, regardless of where or how it was sent

• Standards support network expansion and the integration of new technologies without disrupting existing operations

• They foster innovation and competition by providing a common ground for all manufacturers and developers

Common Internet Protocols