1. What is a computer network?
👉 A group of interconnected devices that share resources and data.
2. Define IP address.
👉 A unique identifier for a device on a network (e.g., 192.168.0.1).
3. What is the difference between TCP and UDP?
👉 TCP is connection-oriented (reliable), while UDP is connectionless
(faster, less reliable).
4. What is a switch?
👉 A device that connects devices in a LAN and uses MAC addresses to
forward data.
5. Explain the OSI model.
👉 A 7-layer framework that standardizes network communication (e.g.,
Application, Transport).
6. What is bandwidth?
👉 The maximum rate of data transfer across a network.
7. What is the role of DNS in networking?
👉 It translates domain names (e.g., google.com) into IP addresses.
8. What’s the difference between LAN and WAN?
👉 LAN: local area (short range); WAN: wide area (large geographic
distance).