Unit mock paperMost comprehensive

Topics 1–4 — cumulative practice

This mock paper synthesises material from all 18 lessons of Topics 1–4: data representation, data transmission, hardware, and software. Cambridge IGCSE 0478-style. 9 questions, 75 marks, 90 minutes. The final two questions (Q8 and Q9) deliberately span multiple topics — the kind of cross-topic synthesis the real exam tests.

Treat it like a real paper — work through it in one sitting, then self-grade against the mark scheme. If a topic feels weak, revisit the relevant lessons.

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Topics 1–4 Mock Paper — IGCSE 0478

Cambridge IGCSE 0478-style mock paper covering Topics 1 (Data Representation), 2 (Data Transmission), 3 (Hardware), and 4 (Software). Answer all questions in the spaces provided. Designed to be completed in approximately 90 minutes.

9 questions·75 marks total·~90 min

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Question 1 of 9

6 marks

This question is about number bases and bit operations.

(a)

Convert each value as instructed.

[4]

11010101 (binary) → denary =

186 (denary) → 8-bit binary =

9C (hex) → denary =

10101110 (binary) → hexadecimal =

(b)

Calculatethe value of 00010110 (binary) after a logical shift LEFT of 3 places. Give the resulting 8-bit binary value.

[2]