Unit mock paper

Topics 1–3 — cumulative practice

This mock paper synthesises material from all 15 lessons of Topics 1–3: data representation, data transmission, and hardware. Cambridge IGCSE 0478-style. 8 questions, 71 marks, 90 minutes. The final question (Q8) deliberately spans 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.

Exam mode

Topics 1–3 Mock Paper — IGCSE 0478

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

8 questions·71 marks total·~90 min

Click a number to jump:Parts answered: 0 / 24

Question 1 of 8

7 marks

This question is about number bases.

(a)

Convert each value as instructed. Write your answer in the box.

[4]

Convert 10110011 (binary) to denary =

Convert 224 (denary) to 8-bit binary =

Convert 4F (hexadecimal) to denary =

Convert 11010110 (binary) to hexadecimal =

(b)

Calculatethe value of 11001100 (binary) after a logical shift LEFT of 2 places. Show your working.

[2]

(c)

Stateone reason hexadecimal is preferred over long binary strings when displaying memory addresses to programmers.

[1]