Layering Concepts
Computer Science: OCR A Level, topic 3.3.10
Layering Concepts
Protocol layer models are often used to help conceptualise the many different network protocols.
Protocol layer models
- In a protocol layer model, a protocol layer is simply a group or collection of network protocols that work at a similar level within the networking process.
Layer properties
- Layers of a protocol layer model should be independent of each other.
- Layers should only interact with each other by considering the inputs and outputs of that layer, not how it works.
Layers everywhere
- Layers are not only used within networking.
- Layers are one example of a technique called abstraction, which helps to simplify problems.
- Layers are commonly used in software development. For example:
- A user interface layer.
- A processing layer.
- A database layer.
Test yourself on Layering Concepts
Which of these should a layer consider about other layers?
Are layers used only in networking?