Data Structures Mock Test 2

How do you check if the 'malloc' function has successfully allocated memory in C?

1 Mark(s)

Your Answer:

Check if the return value is not NULL Check if the return value is not NULL
Check if the return value is 1 Check if the return value is 1
Check if the return value is -1 Check if the return value is -1
Check if the return value is 0 Check if the return value is 0

Which of the following is a URL? (A) Netscape (B) Searchnet.com (C) Internet Explorer (D) www.yahoo.com

1 Mark(s)

Your Answer:

Netscape Netscape
Searchnet.com Searchnet.com
Internet Explorer Internet Explorer
www.yahoo.com www.yahoo.com

What is inheritance in Java?

1 Mark(s)

Your Answer:

The process of acquiring properties and behaviors of one class by another
The process of creating objects The process of creating objects
The process of encapsulation The process of encapsulation
The process of overloading methods The process of overloading methods

Which of the following statements about the Full Duplex is correct?

1 Mark(s)

Your Answer:

It is a type of communication in one direction
It is a type of communication in one direction at a time
It is a type of bi-directional communication
None of the above None of the above

Powerful key that lets you exit a program when pushed____________________?

1 Mark(s)

Your Answer:

Arrow key Arrow key
Space bar Space bar
Escape key Escape key
Return key Return key

Which of the following property is used to draw a line around elements outside the borders?

1 Mark(s)

Your Answer:

line line
padding padding
outline outline
border border

Which access specifier allows members to be accessed only within the class?

1 Mark(s)

Your Answer:

public public
protected protected
none of them none of them

What is the correct way to declare a variable without assigning a value in C#?

1 Mark(s)

Your Answer:

num = int; num = int;
num int; num int;
var num; var num;
int num; int num;

What is the value of the expression 9 % 4 in Java?

1 Mark(s)

Your Answer:

1 1
2 2
3 3
0 0

Most of the flowers open in daylight so that:

1 Mark(s)

Your Answer:

insects can pollinate them insects can pollinate them
they could absorb sunlight they could absorb sunlight
they could transpire quickly they could transpire quickly
wind could pollinate them wind could pollinate them

What will be the output of the following C# code? static void Main(string[] args) { float a = 16.4f; int b = 12; float c; c = a * ( b + a) / (a - b) ; Console.WriteLine("result is :" +c); Console.ReadLine(); }

1 Mark(s)

Your Answer:

106 106
104.789 104.789
105.8546 105.8546
103.45 103.45

Which property is like the GPS in car?

1 Mark(s)

Your Answer:

watchPosition() watchPosition()
clearWatch() clearWatch()
getCurrentPosition() getCurrentPosition()
showPosition() showPosition()

Which of these method of MimeHeader is used to return the string equivalent of the values stores on MimeHeader?

1 Mark(s)

Your Answer:

string() string()
toString() toString()
convertString() convertString()
getString() getString()

Which protocol is commonly used for transferring files over a network?

1 Mark(s)

Your Answer:

SMTP SMTP
FTP FTP
SNMP SNMP
SHMTP SHMTP

Loading and executing a program is called:

1 Mark(s)

Your Answer:

Resourcing Resourcing
process process
Moduling Moduling
Clustering Clustering

What will be the output of the following C# code snippet? static void Main(string[] args) { StringBuilder sb = new StringBuilder("hello world"); sb.Insert(6, "good"); Console.WriteLine(sb); Console.ReadLine(); }

1 Mark(s)

Your Answer:

hello 6world hello 6world
hello good world hello good world
hello goodworld hello goodworld
None of the above None of the above

What does projection media type is used for?

1 Mark(s)

Your Answer:

For use with projected media (direct computer-to-projector presentations), or printing transparencies for projection.
For use with color computer screens For use with color computer screens
For use with handheld devices For use with handheld devices
For use with television-type devices For use with television-type devices

Which operator is used to perform a bitwise AND operation in C?

1 Mark(s)

Your Answer:

&& &&
| |
& &
|| ||

In Ruby, what is an object?

1 Mark(s)

Your Answer:

An instance of a class An instance of a class
A variable A variable
A method A method
A module A module

The clause that permits a view definition to be used in multiple places within a query, is known to be:

1 Mark(s)

Your Answer:

Not Like clause Not Like clause
Unique clause Unique clause
With clause With clause
Having clause Having clause

If a view relation is computed and stored, it may become out of date if the:

1 Mark(s)

Your Answer:

Defined attributes are swapped Defined attributes are swapped
Defined tuples are swapped Defined tuples are swapped
Defined structure is changed Defined structure is changed
Defined relations are modified Defined relations are modified

Which variable checks for the availability of SSL support?

1 Mark(s)

Your Answer:

have_ssl have_ssl
has_ssl has_ssl
avail_ssl avail_ssl
ssl_avail ssl_avail

Acceleration associated with uniform circular motion is called:

1 Mark(s)

Your Answer:

centripetal centripetal
elliptical elliptical
circular circular
linear linear

Which one of the following correctly refers to the task of the classification?

1 Mark(s)

Your Answer:

A measure of the accuracy, of the classification of a concept that is given by a certain theory
The task of assigning a classification to a set of examples
A subdivision of a set of examples into a number of classes
None of the above None of the above

Which of the following is the correct sequence of body parts in the human alimentary canal?

1 Mark(s)

Your Answer:

Mouth --> oesophagus --> large intestine --> stomach --> small intestine
Mouth --> oesophagus --> small intestine --> stomach --> large intestine
Mouth --> oesophagus --> stomach --> large intestine --> small intestine
Mouth --> oesophagus --> stomach --> small intestine --> large intestine

With an asynchronous system, the requesting system waits for a response in real time.

1 Mark(s)

Your Answer:

True True
False False

E-mail is a system for exchanging messages through a__________?

1 Mark(s)

Your Answer:

Client Client
Program Program
Network Network
Backbone Backbone

A point of synchronization between the database and the transaction log is generally referred to as a stop point.

1 Mark(s)

Your Answer:

True True
False False

What does the yield keyword do in Ruby?

1 Mark(s)

Your Answer:

Executes the block passed to the method Executes the block passed to the method
Returns the value of the block passed to the method
Exits the method and returns to the caller
None of the above None of the above

What is the output of the following code: char str[] = "Hello"; cout << str[0] << str[4]; in C++?

1 Mark(s)

Your Answer:

Undefined behavior Undefined behavior
Compilation error Compilation error
Ho Ho
ello ello

Which of the following also used as the first step in the knowledge discovery process?

1 Mark(s)

Your Answer:

Data selection Data selection
Data cleaning Data cleaning
Data transformation Data transformation
Data integration Data integration

A number or letter that appears little below the normal text in MS-Word 2016 is called _____?

1 Mark(s)

Your Answer:

Subscript Subscript
Superscript Superscript
Supertext Supertext
Toptext Toptext

USA defense department initiated the internet in:

1 Mark(s)

Your Answer:

1969 1969
1976 1976
1978 1978
1980 1980

Which function is the entry point of a C/C++ program?

1 Mark(s)

Your Answer:

main() main()
start() start()
program() program()
begin() begin()

What is the result of the expression 8 / 4 in Java?

1 Mark(s)

Your Answer:

8 8
2 2
4 4
32 32

Which of the following property sets in a shorthand form any or all background properties?

1 Mark(s)

Your Answer:

color color
wrap wrap
background background
all of the mentioned all of the mentioned

Which of the following components has a property sheet that includes settings for the frame and the option group?

1 Mark(s)

Your Answer:

Option group label Option group label
Option group frame Option group frame
Option button Option button
Option button labels Option button labels

Percentage accessibility of jute measured by exchange of hydroxyl hydrogens for deutrium is:

1 Mark(s)

Your Answer:

50 50
70 70
49 49
48 48

Which wavy line shows that the word is repeated in MS Word?

1 Mark(s)

Your Answer:

Green Green
Red Red
Blue Blue
None of these None of these

Which is more effective while calling the functions?

1 Mark(s)

Your Answer:

call by value call by value
call by reference call by reference
call by pointer call by pointer
call by object call by object

Synchronous Optical Networking (SONET) frame can carry information from a digitized voice:

1 Mark(s)

Your Answer:

media media
channel channel
station station
signal signal

The terms alternate key and candidate key mean the same thing.

1 Mark(s)

Your Answer:

True True
False False

Any non-living thing is known as:

1 Mark(s)

Your Answer:

autotrophy autotrophy
biotic biotic
abiotic abiotic
bio magnifications bio magnifications

Determine output: public class Test{ public static void main(String[] args){ int[] x = {1, 2, 3, 4}; int[] y = x; x = new int[2]; for(int i = 0; i

1 Mark(s)

Your Answer:

1 2 3 4 1 2 3 4
0 0 0 0 0 0 0 0
1 2 1 2
0 0 0 0
None of these None of these

What will be the output of the following C code? #include<stdio.h> int main() { printf("Hello"); main(); return 0; }

1 Mark(s)

Your Answer:

Hello is printed once Hello is printed once
Hello infinite number of times Hello infinite number of times
Hello is not printed at all Hello is not printed at all
0 is returned 0 is returned

The source first makes a connection with the destination before sending a packet in:

1 Mark(s)

Your Answer:

connection-oriented service connection-oriented service
connectionless service connectionless service
unguided connection unguided connection
unguided connectionless unguided connectionless

Regarding the following statement which of the statements is true? const int a = 100;

1 Mark(s)

Your Answer:

Declares a variable a with 100 as its initial value
Declares a construction a with 100 as its initial value
Declares a constant a whose value will be 100
Constructs an integer type variable with an as identifier and 100 as the value

How do you create a scrollbar for a widget with scrolling content?

1 Mark(s)

Your Answer:

CreateScrollbar() CreateScrollbar()
Scrollbar() Scrollbar()
scrollbar.create() scrollbar.create()
widget.add_scrollbar() widget.add_scrollbar()

Which ASP.NET feature is used to authenticate users?

1 Mark(s)

Your Answer:

ASP.NET Authorization ASP.NET Authorization
ASP.NET Authentication ASP.NET Authentication
ASP.NET Identity ASP.NET Identity
ASP.NET Membership ASP.NET Membership

What is a deadlock in the context of multi-threading?

1 Mark(s)

Your Answer:

A situation where threads execute out of order
A situation where threads wait indefinitely for a signal
A situation where two or more threads are waiting indefinitely for each other to release resources
A situation where a thread blocks other threads from executing

Which is called ternary operator?

1 Mark(s)

Your Answer:

?: ?:
&& &&
||| |||
=== ===

Does Lambda contains return statements?

1 Mark(s)

Your Answer:

True True
False False

A collision in a wireless network may add additional energy from 5% to:

1 Mark(s)

Your Answer:

0.25 0.25
0.2 0.2
0.15 0.15
0.1 0.1

To perform comparison operation on strings supported operations are . . . . . . . .

1 Mark(s)

Your Answer:

Compare() Compare()
Equals() Equals()
Assignment '==' operator Assignment '==' operator
All of the mentioned All of the mentioned

Elementary charge has approximate value of:

1 Mark(s)

Your Answer:

1.602x1019 C 1.602x1019 C
1.602x10-19 C 1.602x10-19 C
1.602x10-9 C 1.602x10-9 C
1.602x109 C 1.602x109 C

What is the output of the following code: cout << (5 < 2) ? "True" : "False"; in C++?

1 Mark(s)

Your Answer:

FALSE FALSE
TRUE TRUE
5 5
2 2

Which of these keywords are used to implement synchronization? class newthread extends Thread { Thread t; String name; newthread(String threadname) { name = threadname; t = new Thread(this,name); t.start(); } public void run() { } } class multithreaded_programing { public static void main(String args[]) { newthread obj1 = new newthread("one"); newthread obj2 = new newthread("two"); try { obj1.t.wait(); System.out.print(obj1.t.isAlive()); } catch(Exception e) { System.out.print("Main thread interrupted"); } } }

1 Mark(s)

Your Answer:

synchronize synchronize
syn syn
synch synch
synchronized synchronized

Evaluating Your Answers

Data Structures Mock Test 2 : Question 1 of 57