O-LevelComputer ScienceHardware2210/12 · Oct/Nov 2017 · Q87 Marks
A computer has 2048 MB of RAM. How many GB of RAM does the computer have? Show your working. GB
- (a)A computer has 2048 MB of RAM. How many GB of RAM does the computer have? Show your working. GB[2]
- (b)Describe one item that is stored in RAM.[2]
- (c)Explain three ways that RAM is different to ROM. 1 2 3[3]
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2017). The mark or mark type is shown in brackets.
- [1] (a) 2048/1024 (or 1024 × 2)
- [1] (a) 2 GB
- [1] (b) Instructions/programs/data
- [1] (b) currently in use
- [1] (c) RAM is volatile, ROM is non-volatile
- [1] (c) RAM is temporary, ROM is (semi) permanent
- [1] (c) RAM normally has a larger capacity than ROM
- [1] (c) RAM can be edited ROM cannot be edited // Data can be read from and written to RAM, ROM can only be read from.
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