Consider the following statements about the cache memory:
- It is a non-volatile memory.
- It is a slow-read and inexpensive memory.
- It is a fast-read and expensive memory.
- It is a small-sized memory.
Which of the above statements are correct?
Select the correct answer using the codes given below:
1 and 2 only
3 and 4 only
1 and 3 only
1, 3 and 4 only
Answer is Wrong!
Answer is Right!
This question was previously asked in
UPSC CISF-AC-EXE – 2018
– Statement 2: It is a slow-read and inexpensive memory. This is incorrect. Cache is designed for fast access (fast-read) and is more expensive than main memory or secondary storage.
– Statement 3: It is a fast-read and expensive memory. This is correct. Cache memory is located closer to the CPU and is significantly faster than main RAM. This speed comes at a higher cost per bit.
– Statement 4: It is a small-sized memory. This is correct. Cache memory is much smaller than main memory due to its high cost and the need for speed (smaller size allows faster access).