Question

Assume that it takes 0. 01 milliseconds to access a disk block if the block is in the disk cache (i. E, in main memory) and 20 milliseconds if the block is on the disk. Assume that 3 level(s) of indexing is used and the cache hit ratio is 88%. What is the effective (average) disk access time in milliseconds (rounded to zero decimal places)

Answer 1

GATE | GATE-CS-2015 (Set 1) | Question 65. Consider a disk pack with a seek time of 4 milliseconds and rotational speed of 10000 rotations per minute (RPM). It has 600 sectors