Based on figure 1, explain how L1 and L2 cache able to reduce the processor's access time to the main memory. (10 marks)

ADDEN mond LI-Cache 32 KB 32B CPU Cache Main memory 256 KB LI Donche 12 KB 32B Access tute Imamosesind NE nanosecond Avecessites 100 nanosecond Figure 1 Figure 1 illustrates a Pentium processor memory hierarchy. The Pentium processor features two caches, L1 and L2. Both caches use a 32-byte block size. L1 is located next to the CPU, whereas L2 is located between the processor and the main memory. Similar to other types of processors, the Li cache is really two caches. The Pentium divides the L1 cache into a cache for instructions (called the I-cache) and a cache for data (called the D-cache). a