Networks

All knowledge base resources related to Networks.

This category explores how computer systems connect and communicate across local and global networks. It covers key concepts such as protocols, packet switching, wireless technologies, and layered communication models. Students will analyze the design, functionality, and security of networks, and evaluate their societal and ethical impacts. Topics support both theoretical understanding and practical applications relevant to real-world systems.

A2.1.1 Describe the purpose and characteristics of networks.

A2.1.2 Describe the purpose, benefits and limitations of modern digital infrastructures.

A2.1.3 Describe the function of network devices.

A2.1.4 Describe the network protocols used for transport and application.

A2.1.5 Describe the function of the TCP/IP model. (HL only) . HL

A2.2.1 Describe the functions and practical applications of network topologies.

A2.2.2 Describe the function of servers. (HL only). HL

A2.2.3 Compare and contrast networking models.

A2.2.4 Explain the concepts and applications of network segmentation.

A2.3.1 Describe different types of IP addressing.

A2.3.2 Compare types of media for data transmission.

A2.3.3 Explain how packet switching is used to send data across a network.

A2.3.4 Explain how static routing and dynamic routing move data across local area networks. (HL only) HL

A2.4.1 Discuss the effectiveness of firewalls at protecting a network.

A2.4.2 Describe common network vulnerabilities. (HL only) HL

A2.4.3 Describe common network countermeasures. (HL only) HL

A2.4.4 Describe the process of encryption and digital certificates.