Dr. A.P.J. Abdul Kalam University BE IV SEM (IT) Computer Architecture [IT-228] June 2021 Question Paper

Dr. A.P.J. Abdul Kalam University

Bachelor of Engineering

Fourth Semester Examination, June-2021

Computer Architecture [IT-228]

Branch - IT

Time: 3:00 Hrs Max Marks 70

Note : 1. Attempt any five questions out of eight.

2. Each question carries equal marks.

Q.1 (a) Draw Von Neumann model of computer and explain all the subsystems

of computer.

(b) What do you mean by SHIFT micro operation? Explain all three types of

SHIFT micro-operation.

Q.2 (a) Draw one stage of arithmetic unit with its function table.

(b) Explain all the CPU registers with their size and functions. Explain how

instructions are executed in a computer?

Q.3 (a) Explain signed-magnitude, signed 1’s and 2’s complement

representations of negative numbers.

(b) Explain the process of multiplication using BOOTH method. Solve –5×2

using Booth method.

Q.4 (a) Differentiate hardwired and microprogrammed control units. Define

microprogram sequencer.

(b) What do you mean by zero, one two and three address instructions? Give

suitable examples.

Q.5 What is Cache? Explain the principle of “Locality of references”. Enlist and

explain page replacement algorithms.

Q6. (a) What is Mapping? Name all the types of cache mapping and explain any

one in detail.

(b) What are the advantages of parallel processing? Define the terms:

Pipeline, speed up ratio and memory interleaving

Q.7 (a) Write a short note on virtual memory.

(b) What is multiprocessor? Explain the characteristics of multiprocessors.

Q.8 Write short notes on any two of the followings:

(i) Addressing modes (ii) Hardwired control unit

(iii) DMA data transfer (iv) Daisy chaining 

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Dr. A.P.J. Abdul Kalam University BE IV SEM (IT) Communication Systems [IT-227] June 2021 Question Paper

Dr. A.P.J. Abdul Kalam University

Bachelor of Engineering

Fourth Semester Examination, June-2021

Communication Systems [IT-227]

Branch - IT

Time: 3:00 Hrs Max Marks 70

Note : 1. Attempt any five questions out of eight.

2. Each question carries equal marks.

Q.1 (a) Comment on frequency deviation, deviation ratio and Carson’s rule.

(b) With the help of suitable diagrams explain direct and indirect methods of

FM generation.

Q.2 Draw a block diagram of communication system and explain it briefly.

Q.3 (a) What is Double Side Band Suppressed Carrier (DSB-SC) modulation?

Explain the basic principal of DSB-SC modulation with suitable sketch.

(b) When the modulation percentage is 75%, an AM transmitter radiates

10kW power? How much of this is carrier Power?

Q.4 Give the difference between Frequency Modulation (FM) and Phase

Modulation (PM).

Q.5 Write and explain time and frequency shifting properties of Fourier

transform.

Q6. (a) With reference to radio receivers. Define the following terms:

(i) Sensitivity

(ii) Selectivity

(iii) Fidelity

(b) With a block diagram, explain the working of high power AM Transmitter.

Q.7 What is a Coaxial cable? Which is the most common cable used for video

signals?

Q.8 Draw and explain any four of the following signals:

(i) Sinusoidal (ii) Unit step

(iii) Ramp (iv) Signum

(v) Rectangular pulse (vi) Impulse (delta)

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Dr. A.P.J. Abdul Kalam University BE IV SEM (IT) Operating System [IT-226] June 2021 Question Paper

Dr. A.P.J. Abdul Kalam University

Bachelor of Engineering

Fourth Semester Examination, June-2021

Operating System [IT-226]

Branch - IT

Time: 3:00 Hrs Max Marks 70

Note : 1. Attempt any five questions out of eight.

2. Each question carries equal marks.

Attachment in PDF: Please Click Here: Dr. A.P.J. Abdul Kalam University BE IV SEM (IT) Operating System [IT-226] June 2021 Question Paper

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Dr. A.P.J. Abdul Kalam University BE IV SEM (IT) Data Base Management System [IT-225] June 2021 Question Paper

Dr. A.P.J. Abdul Kalam University

Bachelor of Engineering

Fourth Semester Examination, June-2021

Data Base Management System [IT-225]

Branch: IT

Time: 3:00 Hrs Max Marks 70

Note : 1. Attempt any five questions out of Eight.

2. All question carry equal marks.

Q.1 (a) What do you mean by deadlock?

(b) What is serializability. Explain its types

Q.2 (a) What do you means by functions of DBA?

(b) Explain the aggregation.

Q.3 (a) What is DBMS? Explain basic operations of DBMS.

(b) Explain levels of Database with the help of suitable example.

Q.4 (a) Explain check constraints.

(b) Explain distributed database.

Q.5 (a) What is E-R model? Draw any E-R diagram of your choice.

(b) What is an Entity? Explain the different types of entities.

Q.6 (a) Explain the integrity constraints.

(b) What is a key? Explain primary key and candidate key.

Q.7 (a) Discuss the various disadvantages in the file system and explain how it

can be overcome by the database system.

(b) Explain the functional dependence with example.

Q.8 (a) Write a short note (Any two) -

i) Relational calculus

ii) Normalization

iii) SQL

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