Special Operations MCQ’s

Read Time:1 Minute, 35 Second

This set of Microprocessor Multiple Choice Questions & Answers (MCQs) focuses on “Special Operations”.

1. After completion of the first cycle, the first task is again scheduled for the next cycle. This process is known as
a) repetition
b) task switch operation
c) processor initiation
d) none of the mentioned

2. The operation that is provided by the internal architecture, to save the execution state of a task is
a) processor reset
b) processor initialization
c) task switch operation
d) halt

3. Which of the following operation is not carried out by 80286?
a) task switch operation
b) halt
c) processor reset
d) none of the mentioned

4. The instruction that can be used to carry out task switch operation is
a) software interrupt instruction
b) exception
c) external interrupt
d) all of the mentioned

5. The NT flag is set by the task switch operation, that is initiated by
a) CALL
b) INT
c) CALL & INT
d) None of the mentioned

6. The instruction that sets the zero flag, if the segment referred to, by the selector can be read is
a) VERW
b) VERR
c) LSL
d) LAR

7. The IRET instruction gets back the execution state of the previous task, if
a) NT (nested task flag) = 1
b) NT (nested task flag) = 0
c) IF (interrupt flag) = 1
d) IF (interrupt flag) = 0

8. The 80286 executes LMSW instruction to enter into
a) real addressing mode
b) protected mode
c) real addressing and protected modes
d) none of the mentioned

9. The instruction that sets the zero flag, if the segment referred to by the selector, can be written as
a) VERW
b) APRL
c) LSL
d) LAR

10. The instruction that reads the segment limit into the register, if privilege rules and descriptor type allow is
a) VERW
b) APRL
c) LSL
d) LAR

11. The instruction that reads the descriptor access rights byte into the register is
a) VERW
b) APRL
c) LSL
d) LAR

12. The instruction that adjusts the RPL (Requested Privilege Level) of the selector, to the numeric maximum of current selector RPL value is
a) LAR
b) VERR
c) LSL
d) APRL

Happy
Happy
0 %
Sad
Sad
0 %
Excited
Excited
0 %
Sleepy
Sleepy
0 %
Angry
Angry
0 %
Surprise
Surprise
0 %

Average Rating

5 Star
0%
4 Star
0%
3 Star
0%
2 Star
0%
1 Star
0%

Leave a Reply

Your email address will not be published. Required fields are marked *

Previous post Protection MCQ’s
Next post 80286 Minimum System Configuration, Interfacing Memory and I/O Devices With 80286 MCQ’s