Operating System Mock Test 4

10%

Question 1 of 10

1. In polling ____________

all of the mentioned

interrupt handler receives interrupts

interrupt-request line is triggered by I/O device

busy - wait cycles wait for I/O from device

Question 1 of 10

Question 2 of 10

2. A block device transfers ____________

with unpredictable response times

bytes one by one

block of bytes as a unit

none of the mentioned

Question 2 of 10

Question 3 of 10

3. If the period of a process is 'p', then what is the rate of the task?

1/p

p²

2*p

Question 3 of 10

Question 4 of 10

4. Which algorithm can be optimized to meet the timing deadlines and rate requirements of continuous media?

Earliest-Deadline-First scheduling

SCAN-EDF scheduling

Both Earliest-Deadline-First scheduling & SCAN-EDF scheduling

None of the mentioned

Question 4 of 10

Question 5 of 10

5. In a safety critical system, incorrect operation ____________

causes major and serious problems

causes minor problems

does not affect much

none of the mentioned

Question 5 of 10

Question 6 of 10

6. Windows NT uses a __________ implementation for I/O.

cache

secondary memory

draft - passing

message - passing

Question 6 of 10

Question 7 of 10

7. The ______ register is read by the host to get input.

data in

data out

flow out

flow in

Question 7 of 10

Question 8 of 10

8. The CPU hardware has a wire called __________ that the CPU senses after executing every instruction.

interrupt bus

interrupt sense line

interrupt request line

interrupt receive line

Question 8 of 10

Question 9 of 10

9. The ______ register is written by the host to send output.

status

data in

control

data out

Question 9 of 10

Question 10 of 10

10. Preemptive, priority based scheduling guarantees ____________

none of the mentioned

hard real time functionality

protection of memory

soft real time functionality

Question 10 of 10