Download JNTUH MCA 1st Sem R15 2020 January 821AB Computer Organization Question Paper

Download JNTUH (Jawaharlal nehru technological university) MCA (Master of Computer Applications) 1st Sem (First Semester) Regulation-R15 2020 January 821AB Computer Organization Previous Question Paper

R15

Code No: 821AB















JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

MCA I Semester Examinations, January - 2020

COMPUTER ORGANIZATION

Time: 3hrs













Max.Marks:75

S

Note: This question paper contains two parts A and B.

Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B
consists of 5 Units. Answer any one full question from each unit. Each question carries
10 marks and may have a, b, c as sub questions.



PART - A



















5 ? 5 Marks = 25



1.a)

Convert the decimal number 5647 to i) BCD ii)Excess-3 code.



[5]

b)

What is locality of reference?













[5]

c)

Discuss the function of instruction queue in 8086.







[5]

d)

What is the need for DMA transfer?











[5]

e)

What are instruction hazards?













[5]



PART - B

















5 ? 10 Marks = 50

2.

Simplify the Boolean expression using K-MAP
F(A,B,C,D) = m(1,2,3,8,9,10,11,14) +d(7,15).









[10]

OR

3.

Design the combinational circuit of Binary to Excess-3 code convertor.

[10]



4.

Discuss about direct and set-associative mapping with examples.



[10]

OR

5.

A two way set associative cache memory uses blocks of four words. The cache can
accommodate a total of 2048 words from the main memory. The main memory size is
128 K*32.
a) Formulate all pertinent information required to construct the cache memory.
b) What is the size of the cache memory?











[10]


6.

Explain in detail the register organization of 8086.







[10]

OR

7.

Write an assembly language program to concatenate two strings.



[10]


8.

Describe in detail about IOP Organization.









[10]

OR

9.a)

Discuss the differences between subroutine and interrupt service routines.

b)

Discuss the design of a typical input or output interface.







[10]


10.a) Describe in detail about pipeline processing.
b) Explain in detail about data hazards.











[10]

OR

11.

Describe the architecture of a shared memory multiprocessor.





[10]



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