Data Communications and Networking: A Communications Model – Data Communications -Evolution of network, Requirements , Applications.
Networks evolved from standalone computers to interconnected systems like ARPANET and the Internet. LANs, WANs, and wireless networks improved communication over time. Modern technologies include cloud computing, 5G, and IoT. These advancements provide faster and more efficient networking.
Data communication is widely used in email, video conferencing, online banking, and e-commerce. It also supports cloud computing, e-learning, telemedicine, social networking, and IoT applications.
Data communication is the exchange of data between two or more devices using a transmission medium. Its main components are sender, receiver, message, medium, and protocol, ensuring accurate and timely delivery.
You are sending a mail from your VIT mail ID to a professor in Stanford. Identify the network devices (hardware) which are employed in the communication.
Explain the components of a communications model with the help of a suitable diagram.