Operating System Questions

MCQ bookmark_border

351.

What is the name of the operating system for the laptop computer called MacLite?

A

Windows

B

DOS

C

MS-DOS

D

OZ

E

None of the above

Correct Answer: D

OZ operating system for the laptop computer called MacLite.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

352.

In which addressing mode the contents of a register specified in the instruction are first decremented, and then these contents are used as the effective address of the operands?

A

index addressing

B

indirect addressing

C

auto increment

D

auto decrement

E

None of the above

Correct Answer: D

Auto decrement mode the contents of a register specified in the instruction are first decremented, and then these contents are used as the effective address of the operands

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

353.

What is the name given to the values that are automatically provided by software to reduce keystrokes and improve a computer user's productivity?

A

Defined values

B

Fixed values

C

Default values

D

Special values

E

None of the above

Correct Answer: C

Default values are automatically provided by software to reduce keystrokes and improve a computer user's productivity.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

354.

Page stealing

A

is a sign of an efficient system

B

is taking page frames from other working sets

C

should be the tuning goal

D

is taking larger disk spaces for pages paged out

E

None of the above

Correct Answer: B

Page stealing is taking page frames from other working sets

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

355.

In MS-DOS 5.0, which is the number that acts as a code to uniquely identify the software product?

A

MS

B

DOS

C

MS DOS

D

5

E

None of the above

Correct Answer: D

In MS-DOS 5.0, 5 is the number that acts as a code to uniquely identify the software product?

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

356.

Bug means

A

A logical error in a program

B

A difficult syntax error in a program

C

Documenting programs using an efficient documentation tool

D

All of the above

E

None of the above

Correct Answer: A

A software bug is an error, flaw, failure or fault in a computer program or system that causes it to produce an incorrect or unexpected result, or to behave in unintended ways.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

357.

Memory management is :

A

not used in modern operating system

B

replaced with virtual memory on current systems

C

not used on multiprogramming systems

D

critical for even the simplest operating systems

E

None of the above

Correct Answer: D

Memory management is critical for even the simplest operating systems

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

358.

The initial value of the semaphore that allows only one of the many processes to enter their critical sections, is

A

8

B

1

C

16

E

None of the above

Correct Answer: B

The initial value of the semaphore that allows only one of the many processes to enter their critical sections, is 1.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

359.

The Register - to - Register (RR) instructions

A

have both their operands in the main store.

B

which perform an operation on a register operand and an operand which is located in the main store, generally leaving the result in the register, except in the case of store operation when it is also

C

which perform indicated operations on two fast registers of the machine and leave the result in one of the registers.

D

all of the above

E

None of the above

Correct Answer: C

The Register - to - Register (RR) instructions which perform indicated operations on two fast registers of the machine and leave the result in one of the registers.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

360.

A page fault

A

is an error is a specific page

B

occurs when a program accesses a page of memory

C

is an access to a page not currently in memory

D

is a reference to a page belonging to another program

E

None of the above

Correct Answer: C

A page fault (sometimes called #PF, PF or hard fault) is a type of exception raised by computer hardware when a running program accesses a memory page that is not currently mapped by the memory management unit (MMU) into the virtual address space of a process.

Check Answer report_problem Report forum Discussion