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Computer Science MCQs
Practice Computer Science multiple-choice questions for AQA competitive exams. Each question includes the correct answer and a short explanation, and past-paper questions are marked so you can revise both repeated and fresh material in one place.
Hard Disk Drive
ROM
RAM
Flash Drive
ErklärungRAM (Random Access Memory) is volatile because it loses its data when the power is turned off.
Hard Disk Drive (HDD)
Random Access Memory (RAM)
Read Only Memory (ROM)
Solid State Drive (SSD)
ErklärungVolatile memory, like RAM, requires power to maintain the stored information; it is cleared when the computer is turned off.
Hard Disk Drive
Random Access Memory (RAM)
Solid State Drive
USB Flash Drive
ErklärungRAM is volatile because it loses all stored data when the power supply is turned off.
Byte
Gigabyte
Bit
Kilobyte
ErklärungA 'bit' is a binary digit, representing either 0 or 1, and is the smallest unit of digital data.
Frequently Asked Questions
Are these Computer Science MCQs free?
Yes. Every Computer Science MCQ on this page is free to practice, including the correct answer and explanation.
Do these include past-paper questions?
Yes — questions sourced from past papers are clearly marked with a "Past Paper" badge, alongside fresh practice questions.
Which exams do these Computer Science MCQs help with?
They are aimed at AQA and related Pakistani competitive exams that test Computer Science.
How should I practice subject-wise MCQs?
Attempt each question first, then reveal the answer and read the explanation. Short, focused sessions on one subject work better than long unstructured reading.