IB Computer Science HL · Unit 2 of 6

IB Computer Science HL Unit 2: Networks

Unit 2 of IB Computer Science covers Networks. This unit contains 4 topics and 17 sub-topics. Below you'll find free study notes, flashcards, and exam preparation resources for every topic in this unit.

Higher Level students should treat this unit page as a route map: revise the shared core, then use the HL notes and topic links to reach the extra depth and evaluation expected at HL.

4 topics17 sub-topics

Exam technique guide

What Unit 2 covers

Theme A: Concepts of computer science

Topics in Unit 2

2.1

Network fundamentals

5 sub-topics

2.2

Network architecture

4 sub-topics

2.3

Data transmissions

4 sub-topics

2.4

Network security

4 sub-topics

Study tip: Work through the topics in order — each builds on concepts from the one before. Start with notes, then reinforce with flashcards and practice questions.

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Unit 1 Unit 3