what is cache memory ?
Cache memory, also called CPU memory, is random access memory (RAM) that a computer microprocessor can access more quickly than it can access regular RAM. This memory is typically integrated directly with the CPU chip or placed on a separate chip that has a separate bus interconnect with the CPU.
How many levels are there Of cache memory ?
answer - 3 leve
MCQs Of Cache ----
1 . Which Cache level is fastest ?
a. L1 chache b. L2 cache c. L3 cache
answer - a (L1 cahce is extremely fast but relatively small)
2. what about L2 level Cache ?
answer. L2 level Cache is usually slower than L1 level Cache and faster then L3 Level Cache
3. what about L3 level Cache ?
answer . L3 level Cache is slower from both L1 and L2 level cache
4. what about cache capacity Of three levels Of Cache ?
answer . Because L1 is small so it faster and it has lowest size and L3 is biggest in Size with slowest Speed
5. compare between Ram and L3 level Cache ?
answer. L3 level Cache is usually double size of Ram.
6. why cache is used in computers ?
answer. When the processor needs to read or write a location in main memory, it first checks for a corresponding entry in the cache.
7. what is cache hit ?
answer . If the processor finds that the memory location is in the cache, a cache hit has occurred and data is read from cache.
8. what is cache miss ?
answer. If the processor does not find the memory location in the cache, a cache miss has occurred. For a cache miss, the cache allocates a new entry and copies in data from main memory, then the request is fulfilled from the contents of the cache.
9. How the performance of cache memory is tested ?
answer. The performance of cache memory is frequently measured in terms of a quantity called Hit ratio.
10. Formula Of cache hit ratio ?
answer. Hit ratio = hit / (hit + miss) = no. of hits/total accesses
Cache memory, also called CPU memory, is random access memory (RAM) that a computer microprocessor can access more quickly than it can access regular RAM. This memory is typically integrated directly with the CPU chip or placed on a separate chip that has a separate bus interconnect with the CPU.
How many levels are there Of cache memory ?
answer - 3 leve
MCQs Of Cache ----
1 . Which Cache level is fastest ?
a. L1 chache b. L2 cache c. L3 cache
answer - a (L1 cahce is extremely fast but relatively small)
2. what about L2 level Cache ?
answer. L2 level Cache is usually slower than L1 level Cache and faster then L3 Level Cache
3. what about L3 level Cache ?
answer . L3 level Cache is slower from both L1 and L2 level cache
4. what about cache capacity Of three levels Of Cache ?
answer . Because L1 is small so it faster and it has lowest size and L3 is biggest in Size with slowest Speed
5. compare between Ram and L3 level Cache ?
answer. L3 level Cache is usually double size of Ram.
6. why cache is used in computers ?
answer. When the processor needs to read or write a location in main memory, it first checks for a corresponding entry in the cache.
7. what is cache hit ?
answer . If the processor finds that the memory location is in the cache, a cache hit has occurred and data is read from cache.
8. what is cache miss ?
answer. If the processor does not find the memory location in the cache, a cache miss has occurred. For a cache miss, the cache allocates a new entry and copies in data from main memory, then the request is fulfilled from the contents of the cache.
9. How the performance of cache memory is tested ?
answer. The performance of cache memory is frequently measured in terms of a quantity called Hit ratio.
10. Formula Of cache hit ratio ?
answer. Hit ratio = hit / (hit + miss) = no. of hits/total accesses
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