Assume that at time 5 no system resources are being used except for the processor and memory. Now consider the following events: At time 5: P1 executes a command to read from disk unit 3.
At time 15: P5’s time slice expires.
At time 18: P7 executes a command to write to disk unit 3.
At time 20: P3 executes a command to read from disk unit 2.
At time 24: P5 executes a command to write to disk unit 3.
At time 28: P5 is swapped out.
At time 33: An interrupt occurs from disk unit 2: P3’s read is complete.
At time 36: An interrupt occurs from disk unit 3: P1’s read is complete.
At time 38: P8 terminates.
At time 40: An interrupt occurs from disk unit 3: P5’s write is complete.
At time 44: P5 is swapped back in.
At time 48: An interrupt occurs from disk unit 3: P7’s write is complete.
For time 37, identify which state each process is in. If a process is blocked, further identify the event on which it is blocked.

Follows are the solution to this question:

Explanation:

In Time = 22:

The P5 and P8 are in the ready/running state, and the P1, P3, P7 are into the block state for Input/output.

In Time = 37:

The P1, P3, P8 are in the ready/running state, P5 is in the block state. It suspends or swapped out, and P7 is on the block state for Input/output.  

In Time= 47:

The P1, P3, and P5 are in the ready/running state, P7 is on the block state for Input/output, and P8 is in the exit state.

a variable of array type holds a reference of object

array are commonly used in computer program to organize data so that a related set of values

array are using zero base indexing it start with 0.

all component of array have same type, two different types doesn't use in single array

if array are store 10 quantities its index value varies from 0 to 9.

it stores 1st quantity value in index value 0 and this process will same till index value 9.

b. xor is the correct answer