A remote-controlled model car contains RAM, ROM and a solid state drive. The car receives radio signals from its remote control. It can only receive radio signals of a certain frequency. The manufacturer sets this frequency and the owner cannot change it. The owner of the model car can input their own sequence of movements from an interface underneath the car.

Mark scheme

Marking points from the official mark scheme (Oct/Nov 2015). The mark or mark type is shown in brackets.

1. [1] RAM: contains instructions/program/data currently in use
2. [1] ROM: contains the start-up/bootstrap program / contains/stores the setting for frequency (can't be changed)
3. [1] Solid state drive: stores the instructions/program/data (to operate the car)
4. [1] Device: touch screen / key pad (NOT keyboard)
5. [1] Reason: easy to use interface / limited number of options / small space/space is limited / other devices such as mouse, keyboard, trackerball, ... not suitable
6. [1] A solid state drive has no moving parts
7. [1] A solid state drive has faster random access
8. [1] A solid state drive has a quick start up/shut down time (reduced latency)
9. [1] A solid state drive is very small
10. [1] A solid state drive is very light
11. [1] A solid state drive consumes very little power
12. [1] A solid state drive does not generate a lot of heat (therefore safer in this application)