engineering computer science MCQ #277

engineering computer science MCQ #277

1. Question 1

   Q1. What is the purpose of the 'valid' bit in a cache memory system?

   • A) To indicate that a cache line is valid
   • B) To indicate that a cache line has been modified
   • C) To indicate that a cache line is empty
   • D) To indicate that a cache line is being accessed

   Answer: To indicate that a cache line is valid

   Explanation: The 'valid' bit is used to indicate whether a cache line contains valid data, ensuring that the CPU does not use stale or incorrect data.