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Olympiad (Class 5) Computer fundamentals and storage devices — practice questions

Explore 54 free Computer fundamentals and storage devices questions in Olympiad (Class 5) Computer Science. Open each question or exercise to read its content, reference answers and available explanation.

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Computer fundamentals and storage devices questions and exercises with answers

Showing questions 1–30 of 54.

Which part of a computer reads and decodes the instructions of a program?Read the answer and worked solution →Riya's computer must add 4875 and 1290 quickly. Which unit does the sum?Read the answer and worked solution →The control unit, ALU and registers together form which main part of a computer?Read the answer and worked solution →A device that gives results to the user in a form people can see or hear is called an what?Read the answer and worked solution →Which one of these is an input device?Read the answer and worked solution →Aman wants to see a paper copy of his homework. Which output device should he use?Read the answer and worked solution →Meena uses a scanner to copy a drawing into the computer. The scanner is what kind of device?Read the answer and worked solution →Which pair has one input device and one output device?Read the answer and worked solution →How many bits make up one byte in almost all modern computers?Read the answer and worked solution →A memory cell holds one byte of eight bits. How many different values can it show?Read the answer and worked solution →Which memory loses its contents when the computer is switched off?Read the answer and worked solution →A computer's start-up instructions are kept in a memory that never changes. Which memory is it?Read the answer and worked solution →Which memory can the CPU both read from and write to whenever it commands?Read the answer and worked solution →Which storage inside the processor is the fastest of all forms of data storage?Read the answer and worked solution →Which memory sits between the processor registers and the main memory in speed?Read the answer and worked solution →Primary memory is also called what?Read the answer and worked solution →Which storage can the CPU reach directly, without input/output channels?Read the answer and worked solution →Which of these keeps its data even when the power is shut off?Read the answer and worked solution →Which pair is usually used as secondary storage in modern computers?Read the answer and worked solution →Why do computers usually have far more secondary storage than primary storage?Read the answer and worked solution →Which storage is slowest to reach for a single byte: a registers, RAM, a hard disk, or cache?Read the answer and worked solution →Which of these is an example of secondary storage?Read the answer and worked solution →A robotic arm that loads tapes to archive rarely used data is part of which storage?Read the answer and worked solution →Tertiary storage is also known by which name, as it is near to online?Read the answer and worked solution →Which storage cannot be reached without a person moving the medium?Read the answer and worked solution →Sana carries her project on a disc to a friend's house. What kind of storage is this?Read the answer and worked solution →Which storage stores data using patterns of magnetization on a coated surface?Read the answer and worked solution →Which of these stores data magnetically?Read the answer and worked solution →A tape library at a big archive mostly uses which kind of storage medium?Read the answer and worked solution →A CD stores data in tiny bumps and pits read by a beam of light. What type of storage is it?Read the answer and worked solution →

Worked practice questions

Which part of a computer reads and decodes the instructions of a program?

  1. Expansion card
  2. Speaker box
  3. Power supply
  4. Control unit
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Correct answer: D. Control unit

The control unit reads each instruction and turns it into signals that activate other parts.

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Riya's computer must add 4875 and 1290 quickly. Which unit does the sum?

  1. Web browser app
  2. Printer ink unit
  3. Motherboard case
  4. Arithmetic logic unit
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Correct answer: D. Arithmetic logic unit

The arithmetic logic unit carries out arithmetic operations such as addition and subtraction.

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The control unit, ALU and registers together form which main part of a computer?

  1. Optical disc drive
  2. Monitor display
  3. Hard disk drive
  4. CPU, the processor
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Correct answer: D. CPU, the processor

Together the control unit, ALU and registers make up the central processing unit, or CPU.

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