Question

The _______ is used to store program data that is currently being executed in the CPU.
1. auxiliary memory
2. volatile memory
3. main memory
4. cache memory

Answer 1

Correct Answer - Option 4 : cache memory

The correct answer is cache memory.

• Cache memory is a memory that temporarily stores frequently used instructions and data for quicker processing by the central processing unit (CPU) of a computer.
• It is used to store program data that is currently being executed in the CPU.
• Internal random-access memories (RAMs) that utilise semiconductor-based transistor circuits are used in both main memory and cache.
• The cache stores only a copy of the most frequently used data or programme codes from the main memory.
• The cache's reduced size minimises the time it takes to identify data and send it to the CPU for processing.

• When a computer's CPU accesses its internal memory, it first examines the cache to verify if the data it requires is already present.
• If it is, the data is returned to the CPU by the cache.
• If the information isn't in the cache, the CPU goes to the main memory to get it.