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Memory and Storage MCQs

Memory and Storage MCQs are multiple-choice questions on how a computer holds data, from registers, cache and RAM to hard disks, optical discs and flash drives, along with data units such as bits and bytes. Every question on MCQs360 shows the correct answer instantly, which makes quick revision for computer sections of recruitment tests easier.

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About Memory and Storage MCQs

Questions in this topic cover the memory hierarchy and the role of each level: registers, cache memory, primary memory (RAM and ROM) and secondary storage. You will be asked which memories are volatile or non-volatile, which is fastest, what cache does between the CPU and main memory, and where virtual memory is kept. Some questions deal with specialised types such as associative memory and serial access memory.

Another group of questions tests storage devices and capacities: magnetic hard disks, floppy disks, CDs, DVDs and USB flash drives, and the technology each uses. Data measurement units, from bits and bytes to kilobytes, megabytes and gigabytes, are a frequent source of easy marks, as are a few historical questions on older systems and their requirements. Knowing typical capacities, such as those of a CD and a DVD, helps with comparison questions.

Key facts to remember

  • One byte is made up of 8 bits.
  • RAM is volatile memory and loses its contents when power is switched off, while ROM is non-volatile.
  • Cache memory sits between the CPU and main memory to speed up access to frequently used data.
  • CPU registers are the fastest storage in the memory hierarchy.
  • Virtual memory uses part of the hard disk or SSD as an extension of RAM.
  • A high-density 3.5-inch floppy disk holds 1.44 MB.

Exams that include Memory and Storage MCQs

Pakistan

  • PPSC
  • FPSC
  • SPSC
  • KPPSC
  • NTS
  • PTS

India

  • SSC CGL
  • SSC CHSL
  • IBPS PO
  • IBPS Clerk
  • RRB NTPC

Bangladesh

  • BCS
  • Bangladesh Bank

How to prepare for Memory and Storage MCQs

  1. Draw the memory hierarchy from registers to secondary storage and note speed, cost and capacity at each level.
  2. Learn which memory types are volatile and which are non-volatile, as this is one of the most repeated questions.
  3. Memorise the data units and their conversions, noting that tests usually use 1 KB = 1024 bytes.
  4. Group storage devices by technology: magnetic, optical and flash (solid state).

Frequently asked questions

What is the difference between primary and secondary memory?

Primary memory, such as RAM, is directly accessed by the CPU and holds data and programs currently in use; most of it is volatile. Secondary memory, such as hard disks, SSDs and flash drives, stores data permanently and is slower but has much larger capacity.

Which exams ask computer memory MCQs?

Memory and storage questions appear in the computer sections of PPSC, FPSC, SPSC, KPPSC and NTS tests in Pakistan, SSC and IBPS exams in India, and the BCS preliminary test in Bangladesh, as well as in tests for computer operator and IT posts.

Last reviewed October 2026