To facilitate communication between deep-space probes and ground stations, engineers structure network protocols using a modular stack.
Explain what is meant by a 'layer' within such a protocol stack.
Practise OCR GCSE Computer Science Wired and wireless networks, protocols and layers with exam-style questions for GCSE Computer Science. 55 questions, matched to the OCR GCSE Computer Science (J277) specification and written in Component 01 and Component 02 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.