MCQ IN COMPUTER SCIENCE & ENGINEERING

COMPUTER SCIENCE AND ENGINEERING

SYSTEM SOFTWARE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which is the fastest type of cache memory?
A
Level 1
B
Level 2
C
Level 3
D
Level 4
Explanation: 

Detailed explanation-1: -Level 1 (L1) is the fastest type of cache memory since it is smallest in size and closest to the processor. Level 2 (L2) has a higher capacity but a slower speed and is situated on the processor chip. Level 3 (L3) cache memory has the largest capacity and is situated on the computer that uses the L2 cache.

Detailed explanation-2: -Level 1 cache memory is built into the processor chip and is the fastest memory.

Detailed explanation-3: -The first-level (L1) cache is small enough to provide a one-or two-cycle access time. The second-level (L2) cache is also built from SRAM but is larger, and therefore slower, than the L1 cache. The processor first looks for the data in the L1 cache. If the L1 cache misses, the processor looks in the L2 cache.

Detailed explanation-4: -L1 Cache. L1 (Level 1) cache is the fastest memory that is present in a computer system.

Detailed explanation-5: -Level-1 cache runs at and is synced with the CPU clock, which is the fastest in the system. Level-2 cache on the other hand has to serve many CPUs, and is running in a different (slower) clock domain. Not only the L2 clock slower (larger tile) but to cross a clock domain boundary adds another delay.

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