19. Given the reference string of page accesses: 1 2 3 4 2 3 4 1 2 1 1 3 1 4 and a system with three page frames, what is the final configuration of the three frames after the LRU algorithm is applied? Assume the FIFO queue is left out right in. (A)1,3,4 (B) 3, 1.4 (C)4,1,2 (D)1,2,3 (E) 1,4,3

20. Which of the following is true of a blocking system call? (A) The application continues to execute its code when the call is issued. (B) The call returns immediately without waiting for the I/O to complete.(C) The execution of the application is suspended when the call is issued. (D)Blocking application code is harder to understand than nonblocking application code (E) None of the above

19. Given the reference string of page accesses: 1 2 3 4 2 3 4 1 2 1 1 3 1 4 and a system with three page frames, what is the final configuration of the three frames after the LRU algorithm is applied? Assume the FIFO queue is left out right in. (A)1,3,4 (B) 3, 1.4 (C)4,1,2 (D)1,2,3 (E) 1,4,3

其他試題

19. Given the reference string of page accesses: 1 2 3 4 2 3 4 1 2 1 1 3 1 4 and a system with three page frames, what is the final configuration of the three frames after the LRU algorithm is applied? Assume the FIFO queue is left out right in.
(A)1,3,4
(B) 3, 1.4
(C)4,1,2
(D)1,2,3
(E) 1,4,3