Operating System Mock Test 9

1. Consider a disk queue with requests for I/O to blocks on cylinders.
98 183 37 122 14 124 65 67
Considering SSTF (shortest seek time first) scheduling, the total number of head movements is, if the disk head is initially at 53 is?

2. Which one of the following is a process that uses the spawn mechanism to revage the system performance?

3. In asymmetric encryption _____________

4. File virus attaches itself to the _____________

5. Using swap space significantly _________ system performance.

6. SSTF algorithm, like SJF __________ of some requests.

7. On media that use constant linear velocity (CLV), the _____________ is uniform.

8. For a domain _______ is a list of objects together with the operation allowed on these objects.

9. In UNIX, two per process ________ are used by the kernel to track swap space use.

10. RAID level 0+1 is used because, RAID level 0 provides ______ whereas RAID level 1 provides ________