adplus-dvertising

Welcome to the DMA MCQs Page

Dive deep into the fascinating world of DMA with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of DMA, a crucial aspect of Microprocessor. In this section, you will encounter a diverse range of MCQs that cover various aspects of DMA, 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.

frame-decoration

Check out the MCQs below to embark on an enriching journey through DMA. 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 DMA. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

DMA MCQs | Page 2 of 7

Explore more Topics under Microprocessor

Q11.
The 8257 is able to accomplish the operation of

a.

verifying DMA operation

b.

write operation

c.

read operation

d.

all of the mentioned

Discuss
Answer: (d).all of the mentioned
Q12.
The bus is available when the DMA controller receives the signal

a.

HRQ

b.

HLDA

c.

DACK

d.

all of the mentioned

Discuss
Answer: (b).HLDA
Q13.
To indicate the I/O device that its request for the DMA transfer has been honoured by the CPU, the DMA controller pulls

a.

HLDA signal

b.

HRQ signal

c.

DACK (active low)

d.

DACK (active high)

Discuss
Answer: (c).DACK (active low)
Q14.
If more than one channel requests service simultaneously, the transfer will occur as

a.

multi transfer

b.

simultaneous transfer

c.

burst transfer

d.

none of the mentioned

Discuss
Answer: (c).burst transfer
Q15.
The continuous transfer may be interrupted by an external device by pulling down the signal

a.

HRQ

b.

DACK (active low)

c.

DACK (active high)

d.

HLDA

Discuss
Answer: (d).HLDA
Q16.
The number of clock cycles required for a 8257 to complete a transfer is

a.

2

b.

4

c.

8

d.

10

Discuss
Answer: (b).4
Q17.
In 8257, if each device connected to a channel is assigned to a fixed priority then it is said to be in

a.

rotating priority scheme

b.

fixed priority scheme

c.

rotating priority and fixed priority scheme

d.

none of the mentioned

Discuss
Answer: (b).fixed priority scheme
Q18.
The priority of the channels varies frequently in

a.

rotating priority scheme

b.

fixed priority scheme

c.

rotating priority and fixed priority scheme

d.

none of the mentioned

Discuss
Answer: (a).rotating priority scheme
Q19.
The register of 8257 that can only be written in is

a.

DMA address register

b.

terminal count register

c.

mode set register

d.

status register

Discuss
Answer: (c).mode set register
Q20.
The operation that can be performed on the status register is

a.

write operation

b.

read operation

c.

read and write operations

d.

none of the mentioned

Discuss
Answer: (b).read operation
Page 2 of 7

Suggested Topics

Are you eager to expand your knowledge beyond Microprocessor? We've curated a selection of related categories that you might find intriguing.

Click on the categories below to discover a wealth of MCQs and enrich your understanding of Computer Science. Happy exploring!

Computer Hardware

Explore the tangible components of computers with our Computer Hardware MCQs. Learn...

Systems Analysis and Design Methods

Get familiar with the process of designing and improving business systems with our...

Neural Networks

Dive into the world of Artificial Intelligence with our Neural Networks MCQs. Uncover...

MS Office

Master the suite of productivity tools with our MS Office MCQs. From Word and Excel...

R Programming

Unleash the power of statistical computing with our R Programming MCQs. Topics cover...

Cyber Security

Understand the fundamentals of safeguarding digital assets with our Cyber Security...

Embedded Systems

Dive into the world of specialized computing systems with our Embedded Systems MCQs....

Operating System

Dive deep into the core of computers with our Operating System MCQs. Learn about...

Formal Languages and Automata Theory

Discover the mathematical models of computation with our Formal Languages and...