This key facts covers Layer 2: Internet Layer within TCP/IP Layers for GCSE Computer Science. Revise TCP/IP Layers in 3.5 Fundamentals of Computer Networks for GCSE Computer Science with 16 exam-style questions and 18 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 5 of 11 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Layer 2: Internet Layer
What happens here: Routes data across networks using IP addresses.
- Purpose: Addressing and routing packets across different networks
- Protocols: IP (Internet Protocol - IPv4/IPv6)
- IP addresses: Logical addresses identifying devices (192.168.1.1)
- Routing: Routers determine best path for data to reach destination
- Data format: Packets (with source and destination IP addresses)
Practice questions for TCP/IP Layers
How many layers does the TCP/IP model have?
Describe what the Internet layer does in the TCP/IP model.