Which of the following statements related to Cache memory organization is FALSE?
2017
Which of the following statements related to Cache memory organization is FALSE?
- A.
In “write through” approach, main memory content is always invalid.
- B.
In “write back” approach, updates are made only in the cache and it minimizes memory writes.
- C.
Least Recently Used (LRU) replacement algorithm can be used in associative and set associative mappings.
- D.
For direct mapping, no replacement algorithm is needed.
Attempted by 61 students.
Show answer & explanation
Correct answer: A
The correct option is A (the FALSE statement). In the write-through policy, data is updated simultaneously in both the cache and the main memory during a write operation. Therefore, the main memory content remains valid and consistent with the cache, making the statement false.