2.1
Packet Structure Trainer
How data is split into packets — the header, payload and trailer, and what each carries.
The Learning Hub/Topic 2
📡 Topic 2
Data Transmission
Five interactive trainers take you from packet structure to encryption. Each one teaches the idea, lets you drill it, then tests you — work through them in order or jump to the skill you need.
2.2
Packet Switching Trainer
How packets travel a network via routers and nodes, and why they can arrive out of order.
2.3
Error Detection Trainer
Parity bits, checksums, check digits and echo check — how each spots errors in transmitted data.
2.4
Transmission Methods Trainer
Serial vs parallel, and simplex, half-duplex and full-duplex — and when each is used.
2.5
Encryption Trainer
Symmetric and asymmetric encryption — keys, plaintext and ciphertext, and how data stays secure.
📚 Want the written theory too? Read the Topic 2 lessons in the Knowledge Library, then come back to train.