O-LevelComputer ScienceHardware2210/11 · May/June 2020 · Q113 Marks

An image of a smartphone is shown. [Figure 1]

(a)Identify one input device that is part of the smartphone.[1]
(b)Identify two output devices that are part of the smartphone. 1 2[2]
(c)(i)State what is meant by the term MAC address.[1]
(c)(ii)Describe the structure of a MAC address.[3]
(d)A smartphone needs both RAM and ROM. State why a smartphone needs RAM and ROM. RAM ROM[2]
(e)(i)Modern smartphones can be secured with a biometric system that is built into the phone. Identify two biometric systems that would be suitable for securing a smartphone. 1 2[2]
(e)(ii)Explain why modern smartphones are secured with a biometric system.[2]

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.

Mark scheme

Marking points from the official mark scheme (May/June 2020). The mark or mark type is shown in brackets.

[1] 1(a) Any one from: Microphone; Touchscreen; Camera; Button
[2] 1(b) Any two from: Speaker; Touchscreen; Light/flash
[1] 1(c)(i) Any one from: Media access control; Unique address given to each device
[3] 1(c)(ii) Any three from: Uses hexadecimal values; Normally 48/64 bits in length (accept any other reasonable value); First half is manufacturer number/code/ID; Second half is serial number
[2] 1(d) It needs RAM to store the data and programs currently in use; It needs ROM to permanently store the boot up instructions
[2] 1(e)(i) Any two from: Fingerprint scanner; Voice recognition; Retina/iris recognition; Facial recognition
[2] 1(e)(ii) Any two from: Adds extra level of security; Biometric device requires properties unique to individual; Allows quicker access as no need to input password // don't need to remember password

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