Question

1 - A drawback of equal or proportional allocation is that

Select one:

a. they are very expensive to compute.

b. the allocation varies according to the degree of multiprogramming.

c. a high-priority process is treated the same as a low-priority process.

d. the processes that arrive earlier get more pages than the processes arriving later.

2- Given the reference string of page accesses: 1 2 3 4 2 3 4 1 2 1 1 3 1 3 and a system with three page frames, what is the final configuration of the three frames after the OPT algorithm is applied?

Select one:

a. 1, 2, 3

b. 1, 3, 4

c. 2, 3, 4

d. 1, 2, 1

Answer 1

1. Option C

high-priority process is treated the same as a low-priority process.

2. Option A

Page 4 is replaced with page 1, because page 4 reference is not required after referencing page 7.