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Welcome to the 80286 80287 Microprocessor MCQs Page

Dive deep into the fascinating world of 80286 80287 Microprocessor with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of 80286 80287 Microprocessor, a crucial aspect of Microprocessor. In this section, you will encounter a diverse range of MCQs that cover various aspects of 80286 80287 Microprocessor, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Microprocessor.

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Check out the MCQs below to embark on an enriching journey through 80286 80287 Microprocessor. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Microprocessor.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of 80286 80287 Microprocessor. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

80286 80287 Microprocessor MCQs | Page 12 of 19

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Q111.
While executing the instruction IN/OUT, the condition of CPL is

a.

CPL = 0

b.

CPL < IOPL

c.

CPL > IOPL

d.

All of the mentioned

Discuss
Answer: (c).CPL > IOPL
Q112.
The instruction at which the exception is generated, but the processor extension registers contain the address of failing instruction is

a.

LTR

b.

INS

c.

CTS

d.

ESC

Discuss
Answer: (d).ESC
Q113.
The exception that has no error code on a stack is

a.

double exception detected

b.

processor extension segment overrun

c.

invalid task state segment

d.

stack segment overrun

Discuss
Answer: (b).processor extension segment overrun
Q114.
Which of the following is protected mode exception?

a.

double exception detected

b.

invalid task state segment

c.

stack segment overrun

d.

all of the mentioned

Discuss
Answer: (d).all of the mentioned
Q115.
Which of the following operation is not carried out by 80286?

a.

task switch operation

b.

halt

c.

processor reset

d.

All of these are carried out by 80286

Discuss
Answer: (d).All of these are carried out by 80286
Q116.
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

Discuss
Answer: (b).task switch operation
Q117.
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

Discuss
Answer: (c).task switch operation
Q118.
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

Discuss
Answer: (d).all of the mentioned
Q119.
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

Discuss
Answer: (a).NT (nested task flag) = 1
Q120.
The NT flag is set by the task switch operation, that is initiated by

a.

CALL

b.

INT

c.

CALL and INT

d.

None of the mentioned

Discuss
Answer: (c).CALL and INT
Page 12 of 19

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