Operating System Questions

MCQ bookmark_border

381.

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

A

recommendations by other users

B

computer magazines

C

objective software reviews

D

all of the above

E

None of the above

Correct Answer: D

None.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

382.

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

A

mutual exclusion

B

deadlock recovery

C

deadlock avoidance

D

cache coherence

E

None of the above

Correct Answer: C

Deadlock avoidance problem is solved by Dijkstra's banker's algorithm

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

383.

The dispatcher

A

actually schedules the tasks into the processor

B

puts tasks in I/O wait

C

is always small and simple

D

never changes task priorities

E

None of the above

Correct Answer: A

The dispatcher actually schedules the tasks into the processor.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

384.

System programs such as Compilers are designed so that they are

A

reenterable

B

non reusable

C

serially usable

D

recursive

E

None of the above

Correct Answer: A

System programs such as Compilers are designed so that they are reenterable

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

385.

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

A

MS-DOS

B

PC-DOS

C

OS/360

D

CP/M

E

None of the above

Correct Answer: D

CP/M, originally standing for Control Program/Monitor and later Control Program for Microcomputers, is a mass-market operating system created for Intel 8080/85-based microcomputers by Gary Kildall of Digital Research, Inc. Initially confined to single-tasking on 8-bit processors and no more than 64 kilobytes of memory, later versions of CP/M added multi-user variations and were migrated to 16-bit processors. CP/M was displaced by DOS soon after the 1981 introduction of the IBM PC.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

386.

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

A

16

B

32

C

64

D

128

E

None of the above

Correct Answer: D

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 128.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

387.

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

A

Terminal table

B

Literal table

C

Identifier table

D

Reductions

E

None of the above

Correct Answer: A

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

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

388.

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

A

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.

B

to build a literal table and an identifier table

C

to build a uniform symbol table

D

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

E

None of the above

Correct Answer: A

The functions of the Syntax phase are 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.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

389.

Swapping

A

works best with many small partitions

B

allows many programs to use memory simultaneously

C

allows each program in turn to use the memory

D

does not work with overlaying

E

None of the above

Correct Answer: C

Swapping is allows each program in turn to use the memory

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

390.

A disk scheduling algorithm in an operating system causes the disk arm to move back and forth across the disk surface in order to service all requests in its path. This is a

A

First come first served

B

Shortest Seek Time First (SSTE)

C

Scan

D

FIFO

E

None of the above

Correct Answer: C

None.

Check Answer report_problem Report forum Discussion