Operating System MCQs

Question 1

Which of the following is helpful in evaluating applications software what will best suit your needs?

Accepted Answer

all of the above

Answer

recommendations by other users

Answer

computer magazines

Answer

objective software reviews

Question 2

What problem is solved by Dijkstra's banker's algorithm?

Accepted Answer

deadlock avoidance

Answer

mutual exclusion

Answer

deadlock recovery

Answer

cache coherence

Question 3

The dispatcher . . . . . . .

Accepted Answer

actually schedules the tasks into the processor

Answer

puts tasks in I/O wait

Answer

is always small and simple

Answer

never changes task priorities

Question 4

System programs such as Compilers are designed so that they are

Accepted Answer

reenterable

Answer

non reusable

Answer

serially usable

Answer

recursive

Question 5

IBM released its first PC in 1981. Can you name the operating system which was most popular at that time?

Accepted Answer

CP/M

Answer

MS-DOS

Answer

PC-DOS

Answer

OS/360

Question 6

If the number of bits in a virtual address of a program is 16 and the page size is 0.5 K bytes, the number of pages in the virtual address space is

Accepted Answer

128

Answer

16

Answer

32

Answer

64

Question 7

Which table is a permanent database that has an entry for each terminal symbol.

Accepted Answer

Terminal table

Answer

Literal table

Answer

Identifier table

Answer

Reductions

Question 8

The function(s) of the Syntax phase is(are)

Accepted Answer

to recognize the major constructs of the language and to call the appropriate action routines that will generate the intermediate form or matrix for these constructs.

Answer

to build a literal table and an identifier table

Answer

to build a uniform symbol table

Answer

to parse the source program into the basic elements or tokens of the language.

Question 9

Swapping

Accepted Answer

allows each program in turn to use the memory

Answer

works best with many small partitions

Answer

allows many programs to use memory simultaneously

Answer

does not work with overlaying