Protocols, layers and packets
What each common protocol does, the four-layer TCP/IP model, how packet switching moves data across the internet, PANs, and how a network is kept secure.
You will be able to
- Match protocols to their jobs
- Put protocols into TCP/IP layers
- Describe packet switching
- Put packets back in order
- Choose methods to keep a network secure
25 minutes, 13 exam-style questions.