All topics › OCR GCSE Computer Science › Secondary storage1.2.2 Secondary storageOCR GCSE Computer Science (J277) · Computer systems (Paper 1) › Memory and storage
Practise Secondary storage. 11 exam-style questions on this subtopic, at up to four difficulty levels, with full mark schemes and a progress tracker. Free, no account needed.
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Identify the type of secondary storage used by both the internal drive and the USB memory stick. solid state Sample questions Written for this site in the style of OCR exam questions. They are not taken from real past papers.
Question 1 Easy 3 marks
(a) State why computers need secondary storage.[1]
(b) Which one of the following is an optical storage medium?one box.[1]
Hard disk drive Blu-ray disc SD card USB flash drive (c) Give one example of a magnetic storage device.[1]
Show the answer and mark scheme (a) to store data / programs permanently (non-volatile), so they are kept when the power is off (b) Answer: Blu-ray disc
(c) hard disk drive (HDD) / magnetic tape Question 2 Medium 4 marks
When choosing a storage device, people consider characteristics such as capacity, durability, portability and reliability.
(a) Explain what is meant by durability .[1]
(b) Explain what is meant by portability .[1]
(c) Explain what is meant by reliability .[1]
(d) Explain what is meant by capacity .[1]
Show the answer and mark scheme (a) how well the device resists damage, e.g. from being dropped, knocked or heated (b) how easy the device is to carry / move around, e.g. its size and weight (c) how likely the device is to keep working / storing data correctly over a long time or many uses (d) how much data the device can store Question 3 Hard 3 marks
A film studio needs to keep an archive of 2 PB of old film footage. The footage is rarely accessed.
Recommend a suitable type of storage for the archive. Justify your recommendation.[3]
Show the answer and mark scheme recommends magnetic storage, e.g. magnetic tape / hard disk drives very high capacity / can store huge amounts of data low cost per gigabyte, which matters for 2 PB slower access does not matter because the footage is rarely accessed reliable for long-term storage when stored correctly Related subtopics
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