Input, Output and Storage | OCR A-Level Computer Science (H446)
Input, Output and Storage
- 46 questions
- 4 subtopics
- Component 01: Computer systems
- Component 01
Input, Output and Storage is examined on component 01 of OCR Computer Science, Computer systems.
46 recall questions across 4 subtopics.
Sample questions from Input, Output and Storage
Answer each one closed book first, then open the answer.
The 4 subtopics
One subtopic is one session. Work down the list.
| Subtopic | What it covers | Questions |
|---|---|---|
| Choosing input and output devices for a problem | Recall questions on choosing input and output devices for a problem, including barcode scanners, optical mark and character recognition, touchscreens, graphics tablets, devices for users who cannot use their hands or cannot see, printers and actuators. | 11 |
| Magnetic, flash and optical storage | Recall questions on how magnetic hard disks, flash and optical discs store data, seek and rotational delay, flash wear, Blu-ray capacity, R and RW discs, and comparing the three for speed, cost, capacity, durability and typical use. | 16 |
| RAM and ROM | Recall questions on what RAM and ROM hold, why RAM is volatile, why ROM must be non-volatile, EEPROM and flash ROM, what more RAM improves, ROM in embedded devices, and why RAM is described as random access. | 9 |
| Virtual storage and disk thrashing | Recall questions on how virtual memory uses secondary storage, page faults and page replacement, disk thrashing and how to cure it, the two meanings of virtual storage, and why cache and virtual memory are different ideas. | 10 |
How the guide is worked
Answering a question from memory stores it far better than reading the answer again. The guide runs that as a fixed procedure on one subtopic at a time, about twenty minutes a session.
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Step 1 · Closed book
Cover the answers. Work through one subtopic and write down what you can. Leave blanks where you have nothing.
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Step 2 · Open book
Go back to the top. Read each printed answer and write it out in full, including the ones you had right.
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Step 3 · Closed book again
Same questions, same order, from memory. The gap between pass one and pass three is the session result.
Read the full method, the return schedule and the research behind it.
Nearby topics
OCR A-Level Computer Science Active Recall Guide
Every topic, not just this one. 1,549 questions with their answers.