Practice 3. Networks with authentic IB Computer Science (CS) exam questions for both SL and HL students. This question bank mirrors Paper 1, 2, 3 structure, covering key topics like programming concepts, algorithms, and data structures. Get instant solutions, detailed explanations, and build exam confidence with questions in the style of IB examiners.
A school currently has a cabled network but wants to add wireless networking across the whole campus.
There are concerns that unauthorized people could access the data on the wireless network.
The school has decided to implement a virtual private network (VPN) to provide access to its network.
Describe two hardware components the school will need to implement the wireless network.
Identify two advantages to the students of the new wireless network.
Outline two methods the school could employ to prevent network data from being accessed over their wireless system.
Identify two technologies the school would require to provide a VPN.
Explain one benefit to the staff of using a VPN to remotely access the school network.
Outline the reason for compression when transmitting data.
A medium-sized company operates from two separate buildings. Each building has its own local area network (LAN), and the two buildings are connected via a wide area network (WAN). The company is considering moving part of its services to a cloud computing provider.
Define the terms local area network (LAN) and wide area network (WAN).
Explain two advantages and one disadvantage for the company of using a client-server network instead of a peer-to-peer model.
Identify two characteristics of a data packet.
Identify two characteristics of a personal area network (PAN).
Some citizens have used the citizen reporting function of the app through a VPN.
Explain why the use of a VPN would reduce the effectiveness of the citizen reporting app.
Outline one reason why protocols are used in communications between computers.
Outline what is meant by the term computer network.
Define the term data encryption.
Outline why protocols are necessary.
Evaluate the use of trusted media access control (MAC) addresses as one method of network security.
Describe the purpose of the following hardware component of a network: Network interface card (NIC)
Outline two advantages of a school using a computer network.
Describe the purpose of the following hardware component of a network: Router
Give two advantages of using fiber optic cable instead of wireless connectivity.