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1. To build a mod-19 counter the number of

flip-flops required is

A. 3

B. 5

C. 7

D. 8

2. A multiplexor with a 4 bit data select

input is a

A. 4:1 multiplexor

B. 2:1 multiplexor

C. 16:1 multiplexor

D. 8:1 multiplexor

3. The astable multivibrator has

A. Two quasi stable states

B. Two stable states

C. One stable and one quasi-stable state

D. None of these

4. Which of the following circuit can be

used as parallel to serial converter?

A. Multiplexer

B. Demultiplexer

C. Decoder

D. Digital counter

5. How many truth tables can be made

from one function table?

A. One

B. Two

C. Three

D. Any number

6. Which of the following devices selects

one of several inputs and transmits it to a

single output?

A. Decoder

B. Multiplexer

C. Demultiplexer

D. Counter

7. The master slave JK flip-flop is

effectively a combination of

A. An SR flip-flop and a T flip-flop

B. An SR flip-flop and a D flip-flop

C. A T flip-flop and a D flip-flop

D. Two T flip-flop

8. Which of the following flip-flops is free

from race around problem?

A. T flip-flop

B. SR flip-flop

C. Master slave JK flip-flop

D. All of these

9. The clock signals are used in sequential

logic circuits…….

A. To tell the time of the day

B. To tell how much time has elapsed

since the system was turned on

C. To carry data signals

D. To synchronize events in various

parts of a system

10. With the use of an electronic counter

sixty capsules are to be filled in bottles

automatically. In such a counter what

will be the number of flip-flops required?

A. 3

B. 4

C. 6

D. 8

11. J K flip-flop has its J-input connected to

logic level 1 and its input to the Q output

pulse is fed to its clock inputs. The flip-

flop will now

A. Change its state at each clock pulse

B. Go to state 1 and stay there

C. Go to state 0 and stay there

D. Retain its previous state

12. Due to which of the following reasons

parallel operation is preferred?

A. Circuitry is simple

B. It requires less memory

C. It is faster than series operation

D. All of the above

13. When an inverter is placed between both

inputs of an SR flip-flop the resulting

flip-flop is

A. JK flip-flop

B. D flip- flop

C. T flip-flop

D. Master slave JK flip-flop

14. A shift register can be used for

A. Parallel to serial conversion

B. Serial to parallel conversion

C. Digital delay line

D. All of these

15. How many flip-flops are needed to divide

the input frequency by 64?

A. 4

B. 5

C. 6

D. 8

16. The function of a multiplexer is to

A. Decode information

B. Select 1 out of N input data sources

and to transmit it to single channel

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C. Transit data on N lines

D. Perform serial to parallel conversion

17. The advantage of serial transfer

compared with parallel transfer for data

transmission is that………

A. It is faster

B. It needs only one wire

C. BCD is compatible

D. All of these

18. A stable multivibrator are used as……

A. Comparator circuit

B. Squaring circuit

C. Frequency to voltage converter

D. Voltage to frequency converter

19. What table shows the logical state of a

digital circuit output for every possible

combination of logical states in the

inputs?

A. Function table

B. Truth table

C. Routing table

D. ASCII table

20. The function difference between SR flip-

flop and JK flip-flop is that

A. JK flip-flop is faster than SR flip-flop

B. JK flip-flop has a feedback path

C. JK flip-flop accepts both inputs 1

D. JK flip-flop does not require external

clock

21. The flip-flops which operate in

synchronism with external clock pulses

are called

A. Synchronous flip-flop

B. Asynchronous flip-flop

C. Either(a) or (b)

D. None of these

22. How many bits are required to encode all

twenty six letters, ten symbols and ten

numerals?

A. 5

B. 6

C. 7

D. 46

23. Which of the following input

combinations is not allowed in an SR

flip-flop?

A. S=0,R=0

B. S=0,R=1

C. S=1,R=0

D. S=1,R=1

24. In a flip-flop, ratio of the frequency of an

output pulse wave to the input wave

pulse is

A. ½

B. 1

C. 2

D. 4

25. The number of flip-flops required in a

decade counter is…….

A. 3

B. 4

C. 5

D. 10

Your Answers…….

1 2 3 4 5

6 7 8 9 10

11 12 13 14 15

16 17 18 19 20

21 22 23 24 25

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1. The ____ separates characters of the source

language into groups that logically belong

together, these groups are called tokens

A. Scanner

B. Parser

C. Code generator

D. None of these

2. ___ is a optional phase designed to improve the

intermediate code so that the multiple object

program runs faster and /or takes less space

A. Lexical analyzer

B. Code optimization

C. Code generation

D. None of these

3. A compiler may run on one machine and

produce object code of another machine is called

A. Cross compiler

B. Assembler

C. Machine compiler

D. None

4. The set symbols used in a programming

language is called its

A. Alphabet

B. String

C. Word

D. None

5. A specialized kind of flowchart for lexical

analyzer called a ___

A. Transition diagram

B. Finite Autometa

C. Data flow diagram

D. None

6. A grammar that produces more than one parse

tree for some sentence is said to be

A. Regular

B. Context Sensitive

C. Context Free

D. Ambiguous

7. A___ for grammar G is a program that takes as

input a string w and produces as output either a

parse free for w, if w is a sentence of G or error

message indicating that w is not a sentence of G

A. Parser

B. Scanner

C. Optimizer

D. None

8. Each replacement of the right side of a

production by the left side in the process is

called

A. Reduction

B. Handle

C. Overload

D. None

9. ____ parser scan the input from left to right and

construct a rightmost derivation in reverse

A. LR

B. Top down

C. Bottom up

D. None

10. The postfix notation for (a+b)*c is

A. Ab+c*

B. abc*

C. ab*c+

D. None

11. In the ___ allocation, the position of an

activation record in memory is fixed at compile

time

A. Stack

B. Static

C. Heap

D. All

12. Which of the following translation program

converts assemble language program to object

A. Assembler

B. Compiler

C. Macro processor

D. Linker

13. Assembler is a program that

A. Place programs into memory and prepares

them for execution

B. Auto mates the translation of assembly

language into machine language

C. Accepts a program written in a high level

language and produces an object program

D. Appears to executes a resources as if it were

machine language

14. An interpreter is a program that


them for execution







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(System Software)

)



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D. Appears to executes a resources as if it were

machine language

15. A compiler is a program that


them for execution


language into machine language



D. Appears to execute a resources as if it were

machine language

16. Local and loop optimization in turn provide

motivation for

A. Date flow analysis

B. Constant folding

C. Peephole optimization

D. DFA and constant folding

17. The graph that shows the basic blocks and their

successor relationship is called

A. a DAG

B. Flow graph

C. a graph with cycles

D. None

18. In an absolute loading schema, which loader

function is accomplished by programmer?

A. Allocation

B. Linking

C. Reallocation

D. Both A and B


function is accomplished loader?

A. Allocation

B. Linking

C. Reallocation

D. Both A and B


function is accomplished by loader?

A. Allocation

B. Linking

C. Reallocation

D. Loading

21. Type checking is normally done during

A. Lexical analysis

B. Syntax analysis

C. Syntax directed translation

D. Code optimization

22. A top down parser generates

A. Left most derivation

B. Right most derivation

C. Right most derivation in reverse

D. Left most derivation in reverse

23. A bottom up parser generates

A. Left most derivation

B. Right most derivation

C. Right most derivation in reverse

D. Left most derivation in reverse

24. Recursive descent parsing is an example of

A. Top down parsers

B. Bottom up parsers

C. May be top down or bottom up

D. None

25. In operator precedence parsing, precedence

relations are defined

A. Top down parsers

B. Bottom up parsers

C. To delimit the handle

D. None

Your Answers…….

1 2 3 4 5

6 7 8 9 10

11 12 13 14 15

16 17 18 19 20

21 22 23 24 25

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1. In which view Headers and Footers are

visible

A. Normal View

B. Draft View

C. Page Layout View

D. Print Layout View

2. Text-styling feature of MS word is

A. Word Color

B. WordArt

C. WordFont

D. WordFill

3. Which items are placed at the end of a

document

A. Footer

B. Foot Note

C. End Note

D. Header

4. A number of letter that appears little below the

normal text is called

A. Superscript

B. Subscript

C. Supertext

D. Toptext

5. The direction of a rectangular page for

viewing and printing is called

A. Orientation

B. Direction

C. Print Layout

D. Preview

6. We can remove / hide border of a shape by

selecting

A. No Line

B. No Outline

C. No Border

D. White Line

7. Which feature starts a new line whenever a

word or sentence reached a border?

A. Text Line

B. New Line

C. Text Align

D. Text Wrapping

8. Color and pattern used to fill a closed shape is

called

A. Shape

B. Fill Back

C. WordArt

D. Fill Style

9. What item contains detailed information about

something in the text?

A. Footer

B. Header

C. Head Note

D. Foot Note

10. To change line height to 1.5 we use shortcut

key

A. Ctrl+1

B. Ctrl+2

C. Ctrl+4

D. Ctrl+5

11. We can change the thickness of a line from __

A. Line width

B. Line Height

C. Line Thick

D. Line Style

12. The space left between the margin and the

start of a paragraph is called

A. Spacing

B. Gutter

C. Indentation

D. Alignment

13. To apply center alignment to a paragraph we

can press

A. Ctrl + C

B. Ctrl+S

C. Ctrl + C + A

D. Ctrl + E

14. The process of removing unwanted part of an

image is called

A. Hiding

B. Bordering

C. Cutting

D. Cropping

15. A number of letter that appears little above the

normal text is called

A. Superscript

B. Subscript

C. Supertext

D. Toptext

16. We can insert a page number at

A. Header

B. Footer

C. Both (A) and (B)



Computer Science TRB – Unit test 45 (MS Word)

(System Software)

)



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D. None of the above

17. Which one can be used as watermark in a

word document

A. Text

B. Image

C. Both (A) and (B)


18. The minimum number of rows and column in

a MS word document?

A. 1 and 1

B. 2 and 1

C. 1 and 2

D. 2 and 2

19. Where footnotes appear in a document?

A. End of document

B. Bottom of a Page

C. End of Heading

D. Both (A) and (B)

20. Which item appears dimly behind the main

body text ?

A. Water Color

B. Back Color

C. Background

D. Watermark

21. How many columns you can insert in a word

document in maximum?

A. 40

B. 45

C. 50

D. 55

22. What is the smallest and largest font size

available in the font size tool in formatting

toolbar?

A. 8 and 72

B. 8 and 68

C. 6 and 72

D. 6 and 68

23. Which of the following is not a font style?

A. Bold

B. Italics

C. Regular

D. Superscript

24. What is place to the left of horizontal scroll

bar?

A. Tab stop buttons

B. View buttons

C. Split buttons


25. Which item is printed at the bottom of each

page?

A. Header

B. Foot Note

C. Title

D. Footer

Your Answers…….

1 2 3 4 5

6 7 8 9 10

11 12 13 14 15

16 17 18 19 20

21 22 23 24 25

For 100% sure success in Computer Science

TRB Exam Join Today …….




Week End Classes

Distance Mode Classes More than 100 Unit Test




Experts

Classes handled by Experienced College

Professors



you are in Tamilnadu you can join in Distance

Mode Class and get 100% SURE SUCCESS in

Computer Science TRB Exam)



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