Question 1: Define a Local Area Network (LAN) and give one example of where it might be used.

Answer: A LAN is a network that connects computers within a small geographical area, such as a school or office. Example: the computer network within a school building.

Question 2: Define a Wide Area Network (WAN) and explain how it differs from a LAN.

Answer: A WAN covers a larger geographical area and connects multiple LANs together. It differs from a LAN because it spans cities, countries, or continents, whereas LANs are limited to a small area.

Question 3: List two advantages of using a LAN over a WAN.

Answer: Advantages include faster data transfer speeds within a LAN and lower cost of setup and maintenance compared to WANs.

Question 4: Describe a scenario where a school might use a WAN.

Answer: A school might use a WAN to connect multiple campuses across different locations, allowing staff and students to access shared resources and communicate.

Question 5: Complete the following truth table for an AND logic gate:

Answer: {"A":["0","0","1","1"],"B":["0","1","0","1"],"Output":["0","0","0","1"]}

Question 6: Draw a simple logic circuit for an OR gate using basic symbols.

Answer: A correct sketch will include an OR gate symbol (curved shape with two inputs on the left and one output on the right), with two lines entering the gate and one line leaving.

Question 7: Explain why networks are important for schools and businesses.

Answer: Networks allow devices to communicate, share resources like printers and files, and enable access to the internet, improving efficiency and collaboration.

Question 8: Sketch a diagram to show how three computers might be connected in a LAN.

Answer: A sketch showing three computers connected to a central switch or hub with lines representing network cables.

Question 9: Describe in your own words how data travels across a WAN.

Answer: Data travels through various communication links such as satellite, fibre optic cables, or wireless connections, often passing through multiple routers and switches to reach its destination.

Question 10: Draw the logic circuit for a NAND gate. Label the inputs and output.

Answer: A correct sketch will include a NAND gate symbol (like an AND gate with a small circle at the output) with two inputs on the left and one output on the right, all properly labeled.