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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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80286 80287 Microprocessor MCQs | Page 2 of 19

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Q11.
The CPU of 80286 contains

a.

16-bit general purpose registers

b.

16-bit segment registers

c.

status and control register

d.

all of the mentioned

Discuss
Answer: (d).all of the mentioned
Q12.
The bits that are modified according to the result of the execution of logical and arithmetic instructions are called

a.

byte addressable bit

b.

control flag bits

c.

status flag bit

d.

none of the mentioned

Discuss
Answer: (c).status flag bit
Q13.
The flags that are used for controlling machine operation are called

a.

status flags

b.

control flags

c.

machine controlled flags

d.

all of the mentioned

Discuss
Answer: (b).control flags
Q14.
The additional field that is available in 80286 is

a.

I/O Privilege field

b.

nested task flag

c.

protection enable

d.

all of the mentioned

Discuss
Answer: (d).all of the mentioned
Q15.
Which of the block is not considered as a block of architecture of 80286?

a.

address unit

b.

bus unit

c.

instruction unit

d.

control unit

Discuss
Answer: (d).control unit
Q16.
The unit that is responsible for calculating the address of instructions, and data that the CPU wants to access is

a.

bus unit

b.

address unit

c.

instruction unit

d.

control unit

Discuss
Answer: (b).address unit
Q17.
The process of fetching the instructions in advance, and storing in the queue is called

a.

mapping

b.

swapping

c.

instruction pipelining

d.

storing

Discuss
Answer: (c).instruction pipelining
Q18.
The CPU must flush out the prefetched instructions immediately following the branch instruction in

a.

conditional branch

b.

unconditional branch

c.

conditional and unconditional branches

d.

none of the mentioned

Discuss
Answer: (b).unconditional branch
Q19.
The device that interface and control the internal data bus with the system bus is

a.

data interface

b.

controller interface

c.

data and control interface

d.

data transreceiver

Discuss
Answer: (d).data transreceiver
Q20.
The register bank of Execution Unit of 80286 is used as

a.

for storing data

b.

scratch pad

c.

special purpose registers

d.

all of the mentioned

Discuss
Answer: (d).all of the mentioned
Page 2 of 19

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