O-LevelComputer ScienceHardware2210/12 · Oct/Nov 2019 · Q115 Marks

Robert has a mobile device that uses RAM, ROM and an SSD.

(a)State what the RAM, ROM and SSD are used for. RAM ROM SSD[3]
(b)Give two reasons why an SSD, rather than a HDD, is used in the mobile device. Reason 1 Reason 2[2]

Mark scheme

Marking points from the official mark scheme (Oct/Nov 2019). The mark or mark type is shown in brackets.

[1] (a) RAM: To store the data / instructions / parts of OS that are currently in use
[1] (a) ROM: To store the firmware / bootup instructions / BIOS
[1] (a) SSD: To store files / software // by example
[1] (b) It is more durable // it has no moving parts
[1] (b) It has a faster read / write / access speed
[1] (b) It is more compact / light weight / smaller / portable
[1] (b) It uses less energy // battery will last longer
[1] (b) It is quieter
[1] (b) Not affected by magnetic forces
[1] (b) It runs at a cooler temperature
[1] (b) Less latency // takes less time to warm up

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Topic: Hardware, O-Level Computer Science (syllabus 2210). Structured question, 5 marks.
Source: O-Level Computer Science, Oct/Nov 2019 Paper 1 Variant 2, question 11.

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