O-LevelComputer ScienceHardware2210/12 · May/June 2022 · Q79 Marks
Cassie stores data for her business every day. She stores the data using optical data storage.
- (a)Identify three examples of optical data storage. Example 1 Example 2 Example 3[3]
- (b)Six statements are given about the operation of three different types of storage. Tick (✔) to show which statements apply to each type of storage. Some statements may apply to more than one type of storage. Statement this storage has no moving parts this storage uses a laser to read and write data this storage uses a read/write head this storage burns pits onto a reflective surface this storage uses NAND and NOR technology this storage stores data in tracks and sectors Type of storage Magnetic (✔) Optical (✔) Solid state (✔)[6]
Mark scheme
Marking points from the official mark scheme (May/June 2022). The mark or mark type is shown in brackets.
- [1] CD
- [1] DVD
- [1] Blu-ray
- [1] this storage has no moving parts: Solid state (✔)
- [1] this storage uses a laser to read and write data: Optical (✔)
- [1] this storage uses a read/write head: Magnetic (✔)
- [1] this storage burns pits onto a reflective surface: Optical (✔)
- [1] this storage uses NAND and NOR technology: Solid state (✔)
- [1] this storage stores data in tracks and sectors: Magnetic (✔)
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