operating system set 2 Detailed Explanation And More Example

Question : 1

In Responsive real time operating system

a) The interruption is acknowledge and operating system response to interrupt.

b) Once the operation starts no interrupt is acknowledge.

c) The operation completes in fixed inter of time.

d) None of these.

Question : 2

In two level scheme if each page is mapped by 4-byte (2 ) page table entry then to create a page table composed of 2 ²⁰ page table entry one requires

a) 2 ²² bytes

b) 2 ¹² bytes

c) 2 ¹⁶ bytes

d) None of these.

Question : 3

UNIX is a

a) Operating system

b) Hardware

c) Programming language

d) None of these.

Question : 4

Local replacement

a) allows a process to select a replacement frame from the set of all frames

b) requires that each process selects from only its own set of allocated frames

c) both (A) and (B) above

d) none of the above

Question : 5

UNIX recognizes following I/O devices

a) Disk and Tape drives

b) Terminals

c) Communication lines

d) All the above.

Question : 6

Thrashing can be avoided if

a) the pages, belonging to the working set of the programs are in main memory

b) the speed of CPU is increased

c) the speed of I/O processor is increased

d) all of the above