IGCSE Computer Science 2023-25 - (2a) Data Transmission - DATA PACKETS (Video 1)
Data that is sent over long distances is usually broken up into smaller parts known as data packets.
Computer Science Syllabus IGCSE (from Cambridge)
For exams in 2023, 2024 and 2025.
VIDEO to support
TOPIC 2 : Data Transmission
Data is frequently transferred from one device to another. The two
devices could be in the same building or thousands of kilometres away.
Irrespective of the distance travelled, the transmission of data needs to be
considered with respect to:
How the data is transmitted, how can errors following transmission be detected and can the data be recovered and the role of encryption to make sure data that falls into the wrong hands can’t be used.
It is also important to consider ways of checking for errors in data once it
has been entered into a computer.