Communications Network:
A communications network is a system that enables the exchange of data and information between devices, users, and applications. It consists of various components, including: Transmission Media : This includes physical media like cables (fiber optics, coaxial, twisted pair) and wireless channels (radio waves, microwaves). Networking Devices : Routers, switches, hubs, and access points facilitate data transfer, manage traffic, and connect different segments of the network. Protocols : These are rules governing data transmission, ensuring reliable communication. Common protocols include TCP/IP, HTTP, and FTP. Network Topologies : This refers to the layout of the network, which can be star, ring, bus, or mesh, affecting performance and scalability. Services : Networks support various services such as voice communication (VoIP), video conferencing, and internet access. Security : Measures like firewalls, encryption, and authentication are crucial for protecting data and maintaining priva