Computer Networks: Components and Protocols

• A computer network is a collection of computers or electronic devices connected through cables, wires, or wirelessly.
• Devices such as computer printers, scanners, fax machines, and file servers can be part of a network.
• Sending and receiving data between devices on the network is the primary purpose.
• Nodes refer to connected devices, and communication requires the use of transmission media like cables.
• Key components include a sender with data, a receiver expecting data, and protocols that ensure communication between them.
• Common protocols include HTTP and HTTPS for web browsers, SMTP for emails, and FTP for file transfers.
• Networks facilitate resource sharing, such as documents, pictures, and videos, among devices.
• Computer networks have significant advantages, like instant messaging, sharing hardware, and data files, as well as running software.
• Potential disadvantages include the risk of data theft by hackers, viruses spreading through connected devices, increased setup costs, and network downtime due to server failure.
• Network management requires personnel to maintain a large network.

Explore the key components and protocols of computer networks, including the purpose, advantages, and disadvantages. Learn about nodes, transmission media, common protocols, resource sharing, and network management.