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S4 ICT | Computer Hardware and Peripherals Practice Paper 1
S4 ICT | Computer Hardware and Peripherals Practice Paper 1
Ten items graded from foundation to challenge, covering byte conversion, memory types, port uses and multimedia file-size arithmetic.
Attempt first, mark afterwards Allow about twenty-five minutes; write only the final answer, then read the note for the key step.
01 Paper details (check answers afterwards)
| Item | Detail |
|---|---|
| Questions | 10 items |
| Suggested time | About 25 minutes |
| Difficulty mix | Foundation 4 · Intermediate 3 · Challenge 2 · Error redo 1 |
| Chapter | Chapter: S4 ICT | Computer Hardware and Peripherals Tutor Prep Guide |
| Level | S4 (Secondary 4) ICT |
02 Questions (10 items)
- FoundationHow many bytes are there in 1 KiB?
- FoundationHow many bytes are there in 4 GiB of memory?
- FoundationWhat is the main difference between RAM and ROM?
- FoundationWhich of these is an output device: keyboard, scanner, projector, microphone?
- IntermediateAn uncompressed 4,000 x 3,000 pixel image at 24-bit colour takes about how many MB (1 MB = 1,000,000 B)?
- IntermediateUncompressed audio at 44,100 Hz, 16-bit, stereo uses how many KB per second (1 KB = 1,000 B)?
- IntermediateWhat are USB-C and HDMI ports mainly used for?
- ChallengeRecording 90 seconds at 8 Mbps gives a file of about how many MB (1 MB = 8 Mb)?
- ChallengeA 600 dpi x 600 dpi printer can place how many dots in one square inch?
- Error redoA student reads an 8 Mbps broadband plan as 8 MB per second. What is the real maximum per second?
03 Answers and one-line notes
| # | Answer | One-line note |
|---|---|---|
| 1 | 1,024 bytes | The binary prefix KiB steps in powers of 1,024, so 1 KiB = 1,024 B. |
| 2 | 4,294,967,296 bytes | 4 x 1,024 cubed gives 4,294,967,296 bytes. |
| 3 | RAM is read-write but loses its contents when power is off; ROM keeps its contents | RAM is volatile memory, while ROM is non-volatile. |
| 4 | Projector | A projector turns signals into a visible image; the other three feed data into the computer. |
| 5 | About 36 MB | 4,000 x 3,000 x 3 B = 36,000,000 B, which is about 36 MB. |
| 6 | About 176.4 KB | 44,100 x 16 x 2 = 1,411,200 bits; divide by 8 to get 176,400 B. |
| 7 | USB-C for general data and power transfer; HDMI for digital video and audio | A port bandwidth and power rating decide which peripherals it can drive. |
| 8 | 90 MB | 8 x 90 = 720 Mb, and 720 divided by 8 is 90 MB. |
| 9 | 360,000 dots | 600 x 600 = 360,000; dpi counts dots per inch in each direction. |
| 10 | About 1 MB | Bits and bytes differ by a factor of 8; divide Mbps by 8 to get MB/s. |
04 What to do after marking
- After marking, redo only the wrong items and write down which step went wrong (formula, unit, or misread number).
- Repeat the same item two days later; move to the next paper only when both attempts are correct.
- Parents only need the answer and note columns; there is no need to explain every item.
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Questions and answers are written originally by the TutorZone team and are not taken from any school, publisher or examination authority paper. Every value is checked by computer.