Nielit A Level January, 2011 A4-R4: COMPUTER SYSTEM ARCHITECTURE

Nielit A Level January, 2011

A4-R4: COMPUTER SYSTEM ARCHITECTURE

PART ONE

(Answer all the questions)

1. Each question below gives a multiple choice of answers. Choose the most appropriate one and enter in the “tear-off” answer sheet attached to the question paper, following instructions therein. (1x10)

1.1 An arithmetic shift-right is equivalent to
A) multiplying the number by 2
B) dividing the number by 2
C) changing the sign of the number
D) reversing the number
1.2 The computer can be interrupted if
A) IEN= 0, FGI=0
B) IEN= 0, FGI=1
C) IEN= 1, FGI=0
D) IEN= 1, FGI=1

Nielit A Level July, 2011 A4-R4: COMPUTER SYSTEM ARCHITECTURE

Nielit A Level July, 2011

A4-R4: COMPUTER SYSTEM ARCHITECTURE

PART ONE

(Answer all the questions)

1. Each question below gives a multiple choice of answers. Choose the most appropriate one and enter in the “tear-off” answer sheet attached to the question paper, following instructions therein. (1x10)

1.1 The hardware which is responsible for executing machine language instructions can be built
using large number of few basic building blocks, which are called
A) Control Unit
B) CPU
C) Logic gates
D) None of the above
1.2 The output depends both on the current inputs as well as on how it got to the current state in
A) Combinational circuits
B) Sequential circuits
C) In both – combinational and sequential circuits
D) None of the above

A Level January, 2012 A4-R4: COMPUTER SYSTEM ARCHITECTURE

A Level  January, 2012

A4-R4: COMPUTER SYSTEM ARCHITECTURE

TOTAL TIME: 3 HOURS TOTAL MARKS: 100
(PART ONE – 40; PART TWO – 60)

PART ONE

(Answer all the questions)

1. Each question below gives a multiple choice of answers. Choose the most appropriate one and enter in the “tear-off” answer sheet attached to the question paper, following instructions therein. (1x10)

1.1 The circuit given below is

A) Combinational
B) Sequential
C) Hybrid
D) Analog
1.2 Which one of the following is universal gate?
A) AND
B) OR
C) NOR
D) NOT

A Level July, 2012 A4-R4: COMPUTER SYSTEM ARCHITECTURE

A Level July, 2012

A4-R4: COMPUTER SYSTEM ARCHITECTURE

TOTAL TIME: 3 HOURS TOTAL MARKS: 100
(PART ONE – 40; PART TWO – 60)

PART ONE

(Answer all the questions)

1. Each question below gives a multiple choice of answers. Choose the most appropriate one and enter in the “tear-off” answer sheet attached to the question paper, following instructions therein. (1x10)

1.1 A combinational circuit which performs arithmetic addition of three bits is called
A) Half–adder
B) Full–adder
C) Double–adder
D) None of the above
1.2 Storage capabilities are not provided in
A) ROM
B) RAM
C) Secondary Storage
D) None of the above