Question 34

The measurement results shown below were obtained when a certain SQL statement was processed. Based on the results, it seems there is some waiting for resources. What is the total waiting time in seconds? In this example, communication/processing time can be ignored.

CPU time	200 milliseconds
Response time	35.0 seconds
Physical I/O processing	400 operations
Average disk access time per physical I/O processing	15 milliseconds (including search time)
Logical I/O processing	2,000 operations

a) 4.8
b) 6.2
c) 28.8
d) 29.0

answer