Input Output Systems Questions

MCQ bookmark_border

31.

What is a dedicated device?

A

opposite to a sharable device

B

same as a sharable device

C

can be used concurrently by several processes

D

none of the mentioned

Correct Answer: A

None.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

32.

A keyboard is an example of a device that is accessed through a __________ interface.

A

block stream

B

set of blocks

C

character stream

D

none of the mentioned

Correct Answer: C

None.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

33.

In polling ____________

A

busy-wait cycles wait for I/O from device

B

interrupt handler receives interrupts

C

interrupt-request line is triggered by I/O device

D

all of the mentioned

Correct Answer: A

None.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

34.

A non blocking system call _________________

A

halts the execution of the application for an extended time

B

does not halt the execution of the application

C

does not block the interrupts

D

none of the mentioned

Correct Answer: B

None.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

35.

An asynchronous call ____________

A

returns immediately, without waiting for the I/O to complete

B

does not return immediately and waits for the I/O to complete

C

consumes a lot of time

D

is too slow

Correct Answer: A

None.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

36.

Buffering is done to ____________

A

cope with device speed mismatch

B

cope with device transfer size mismatch

C

maintain copy semantics

D

all of the mentioned

Correct Answer: D

None.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

37.

Caching is ________ spooling.

A

same as

B

not the same as

C

all of the mentioned

D

none of the mentioned

Correct Answer: B

None.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

38.

Caching ____________

A

holds a copy of the data

B

is fast memory

C

holds the only copy of the data

D

holds output for a device

Correct Answer: A

None.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

39.

Spooling ____________

A

holds a copy of the data

B

is fast memory

C

holds the only copy of the data

D

holds output for a device

Correct Answer: C

None.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

40.

The ________ keeps state information about the use of I/O components.

A

CPU

B

OS

C

kernel

D

shell

Correct Answer: C

None.

Check Answer report_problem Report forum Discussion