Videos
International Baccalaureate · IB Diploma · Computer Science · HL
Pick a topic to watch.
6 video lessons
3:41
Computer fundamentals
A school booking system can calculate correctly and still fail if users lose access or records are discl…
3:34
Networks
A small message can arrive late on a high-bandwidth link. Capacity and delay measure different properties.
3:47
Databases
Duplicating a user address in every order can produce conflicting records when the address changes.
3:54
Machine learning
A model can score well by learning a shortcut in the training data. Evaluation must test the intended ta…
3:31
Computational thinking
An algorithm 算法 can work for one example and fail at a boundary. Testing should be designed from the spe…
3:32
Object-oriented programming
Two bank-account model objects can respond to the same deposit operation while holding different balances.