MCQ
Basic Computer: RAM & ROM MCQ - Practice Questions with Answers
Solve 15 Basic Computer: RAM & ROM questions for RAS/RPSC preparation.
Practice questions
Q1Which statement correctly describes RAM in a computer system?
RAM stands for Random Access Memory. It is part of primary memory and is used by the CPU to hold the data, instructions and programmes that are currently being worked on. The key cue in the question is “RAM in a computer system”. RAM is volatile, so its contents are lost when the power supply is switched off. It is fast and directly useful during processing, but it is not meant for permanent file storage. Therefore, option A correctly describes RAM.
Q2Match List I with List II. List I: I. RAM II. ROM III. DRAM IV. SRAM List II: 1. Common main memory that needs refreshing 2. Memory generally used for permanent instructions 3. Fast memory often used in cache 4. Volatile read-write working memory
RAM is volatile read-write working memory, so I matches 4. ROM is normally used for permanent instructions, so II matches 2. DRAM is a common form of main memory and it needs periodic refreshing, so III matches 1. SRAM is faster and is often used in cache memory, so IV matches 3. The correct sequence is therefore I-4, II-2, III-1 and IV-3. This matching also separates the broad RAM-ROM difference from the two common RAM types.
Q3During the start-up of a computer, which type of primary memory contains the instructions needed to begin the boot process?
The start-up cue in the stem points to boot instructions. A computer needs a small set of permanent instructions to begin checking hardware and loading the operating system. These instructions are kept in ROM or firmware because ROM is non-volatile. RAM cannot serve this role because it becomes empty when power is lost. Cache and virtual memory are also temporary working arrangements used after processing begins. Hence, the correct answer is ROM.
Q4Match List I with List II. List I: 1. PROM 2. EPROM 3. EEPROM 4. RAM List II: 5. Can be erased and reprogrammed electrically 6. Can be erased using ultraviolet light 7. Can be programmed once after manufacture 8. Volatile read-write working memory
The matching depends on the basic meanings of the memory names. PROM is Programmable ROM and is commonly described as programmable once after manufacture. EPROM can be erased with ultraviolet light, while EEPROM can be erased and reprogrammed electrically. RAM is not a ROM type; it is volatile read-write working memory used while programmes run. Therefore the correct sequence is 1-7, 2-6, 3-5 and 4-8.
Q5Which of the following is NOT a usual feature of RAM?
The question asks for the feature that is not usual for RAM. RAM is temporary working memory, supports read-write operations, and is faster than secondary storage for active processing. Permanent storage of the basic start-up firmware is associated with ROM or firmware storage, not RAM. The word permanently is the main cue here. RAM normally loses unsaved contents when power is removed, so it is not the place for permanent start-up instructions.
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6Statement I: RAM and ROM are both examples of primary memory. Statement II: RAM is usually volatile, while ROM is usually non-volatile. Statement III: ROM is normally used as the main temporary workspace for running programmes. Which statements are correct?
7Match List I with List II and choose the correct answer. List I: I. RAM II. ROM III. Cache memory IV. Secondary memory List II: a. Non-volatile memory with firmware instructions b. Very fast memory used between CPU and main memory c. Volatile working memory for active programmes d. Long-term storage such as HDD or SSD
8Which statement best explains why RAM is called volatile memory?
9Which statement best describes RAM in a computer?
10Read the Assertion and Reason carefully. Assertion (A): ROM is suitable for storing firmware instructions needed at start-up. Reason (R): ROM is non-volatile, so its contents are retained even when the power supply is switched off. Choose the correct answer.
11Consider the following statements about SRAM and DRAM. Statement I: SRAM generally does not need to be refreshed repeatedly while power is supplied. Statement II: DRAM stores each bit using a capacitor and therefore needs periodic refreshing. Statement III: DRAM is commonly used as cache memory inside the CPU. Which of the above statements are correct?
12In the context of primary memory, which option correctly identifies the usual role of ROM?
13Assertion (A): ROM is called non-volatile memory. Reason (R): ROM normally retains its stored instructions even when the power supply is switched off.
14Which of the following statements about RAM and ROM is incorrect?
15Assertion (A): ROM is generally non-volatile memory. Reason (R): ROM normally retains its stored instructions even when the computer is switched off.