Data Structures Mock Test 10

What does this statement mean? x - = y + 1; ``` x - = y + 1; ```

1 Mark(s)

Your Answer:

x = x - y + 1 x = x - y + 1
x = -x - y - 1 x = -x - y - 1
x = x + y - 1 x = x + y - 1
x = x - y - 1 x = x - y - 1

Angular momentum is a:

1 Mark(s)

Your Answer:

vector quantity vector quantity
scalar quantity scalar quantity
unit vector unit vector
impulse impulse

Farmers tested the soil by tasting it. If the soil is sour in taste or has smell, the soil is:

1 Mark(s)

Your Answer:

alkaline alkaline
acidic acidic
bitter bitter
salty salty

Intruders are the most common security threat which is known to be:

1 Mark(s)

Your Answer:

Account Access Account Access
Data Access Data Access
Hacker or Cracker Hacker or Cracker
Computer Access Computer Access

What will be the output of the following C# code? static void main(string[] args) { int i; int res = fun (out i); console.writeline(res); console.readline(); } static int fun(out int i) { int s = 1; i = 7; for (int j = 1; j <= i; j++ ) s = s * j; return s; }

1 Mark(s)

Your Answer:

4490 4490
5040 5040
5400 5400
3500 3500

The atmosphere is an important part for life on:

1 Mark(s)

Your Answer:

Earth Earth
Jupiter Jupiter
Neptune Neptune
Mars Mars

Which class allows parsing of command line arguments?

1 Mark(s)

Your Answer:

Args Args
JCommander JCommander
Command Line Command Line
Input Input

UNCED stands for:

1 Mark(s)

Your Answer:

United Nations Corporation on Environment and Development
United Nations Conference on Environment and Development
United Nations Corporation on Environment and Disasters
United Nations Conference on Environment and Disasters

What is the `this` pointer in a static member function?

1 Mark(s)

Your Answer:

The object The object
The class The class
The main The main
Unavailable Unavailable

Managed code is:

1 Mark(s)

Your Answer:

The code that is compiled by the JIT compilers
The code where resources are garbage collected
The code that is written to target the services of the CLR
a and c a and c

Only infix expression can be made into an expression tree.

1 Mark(s)

Your Answer:

true true
false false

The main difference between the variables declared with var and with let is

1 Mark(s)

Your Answer:

var is confined to a particular function but let is not
let is confined to a particular function but var is not
var defines values based on conditions but let does not
none of the mentioned none of the mentioned

In Microsoft Excel, what is the purpose of conditional formatting?

1 Mark(s)

Your Answer:

To apply formatting based on specified criteria or rules.
To create custom functions for complex calculations.
To sort data in alphabetical or numerical order.
None of these None of these

Process of storing programs and data in a computer memory is called:

1 Mark(s)

Your Answer:

CPU CPU
data processing data processing
fixed disk fixed disk
stored-program concept stored-program concept

Which of the following is a combinational logic circuit which converts binary information from n coded inputs to a maximum of 2n unique outputs?

1 Mark(s)

Your Answer:

Multiplexer Multiplexer
Demultiplexer Demultiplexer
Encoder Encoder
Decoder Decoder

Members of a union are accessed as . . . . . . . .

1 Mark(s)

Your Answer:

union-name.member union-name.member
union-pointer->member union-pointer->member
both union-name.member & union-pointer->member
none of the mentioned none of the mentioned

What is the purpose of the File.ReadAllBytes() method in C#?

1 Mark(s)

Your Answer:

Reads all lines of text from a file into a string
Reads all bytes from a file into a byte array
Reads all bytes from a file into a string
None of the above None of the above

What is the primary function of the Hadoop MapReduce "Map-side Aggregation" technique?

1 Mark(s)

Your Answer:

Aggregate values on the mapper side Aggregate values on the mapper side
Combine intermediate key-value pairs on the mapper side
Sort and shuffle data Sort and shuffle data
Distribute data to reducers Distribute data to reducers

Which tag should be used to pass information from JSP to included JSP?

1 Mark(s)

Your Answer:

Using tag Using tag
Using tag Using tag
Using tag Using tag
Using tag Using tag

What will be the output of the following Java code? class Output { public static void main(String args[]) { byte a[] = { 65, 66, 67, 68, 69, 70 }; byte b[] = { 71, 72, 73, 74, 75, 76 }; System.arraycopy(a, 2, b, 1, a.length-2); System.out.print(new String(a) + " " + new String(b)); } }

1 Mark(s)

Your Answer:

ABCDEF GHIJKL ABCDEF GHIJKL
ABCDEF GCDEFL ABCDEF GCDEFL
GHIJKL ABCDEF GHIJKL ABCDEF
GCDEFL GHIJKL GCDEFL GHIJKL

Pick the incorrect statement for namespaces in C++.

1 Mark(s)

Your Answer:

Namespace declarations are always global scope
Keyword namespace is used at the starting of a namespace definition
Namespace has access specifiers like private or public
Namespace definitions can be nested Namespace definitions can be nested

What happens during "rehashing" in a hash table?

1 Mark(s)

Your Answer:

The hash table elements are sorted. The hash table elements are sorted.
The hash function is changed. The hash function is changed.
The hash table is resized and all elements are rehashed to new indices.
The hash table is cleared. The hash table is cleared.

What is the purpose of the UgilifyJS?

1 Mark(s)

Your Answer:

Exposes a simple API Exposes a simple API
Minification Minification
Both Exposes a simple API and Minification
None of the mentioned None of the mentioned

What is the purpose of the SelectMany operator in LINQ?

1 Mark(s)

Your Answer:

Filters a sequence based on a predicate Filters a sequence based on a predicate
Orders the elements of a sequence Orders the elements of a sequence
Groups the elements of a sequence Groups the elements of a sequence
Projects each element of a sequence and flattens the resulting sequences

What will be the output of the following C code? #include <stdio.h> struct p { char *name; struct p *next; }; struct p *ptrary[10]; int main() { struct p p; p.name = "xyz"; p.next = NULL; ptrary[0] = &p; printf("%s\n", ptrary[0]->name); return 0; }

1 Mark(s)

Your Answer:

Compile time error Compile time error
Segmentation fault Segmentation fault
Undefined behaviour Undefined behaviour
xyz xyz

Apache Hadoop Development Tools is an effort undergoing incubation at . . . . . . . .

1 Mark(s)

Your Answer:

ADF ADF
ASF ASF
HCC HCC
AFS AFS

What will be the output of the following C# code? namespace ConsoleApplication4 { abstract class A { int i; public abstract void display(); } class B: A { public int j; public override void display() { Console.WriteLine(j); } } class Program { static void Main(string[] args) { B obj = new B(); obj.j = 2; obj.display(); Console.ReadLine(); } } }

1 Mark(s)

Your Answer:

0 0
2 2
Compile time error Compile time error
1 1

All animals need oxygen and most of this oxygen comes from:

1 Mark(s)

Your Answer:

roots roots
plants plants
stem stem
pollen grain pollen grain

Which of the following is not a valid command to type in to the UNIX ftp prompt?

1 Mark(s)

Your Answer:

? ?
get get
put put
pwt pwt

What does CIL stands for:

1 Mark(s)

Your Answer:

Command Information Library Command Information Library
Computational Intelligence Laboratory Computational Intelligence Laboratory
Community Information Line Community Information Line
Common Intermediate Language Common Intermediate Language

Which of the following is a popular programming language for developing multimedia webpages ________ ?

1 Mark(s)

Your Answer:

BASIC BASIC
Assembler Assembler
Java Java
COBOL COBOL

Which method is used to connect a TcpClient object to a remote host in C#?

1 Mark(s)

Your Answer:

Send() Send()
Receive() Receive()
Accept() Accept()
Connect() Connect()

What is the recommended indentation style for Ruby code?

1 Mark(s)

Your Answer:

Two spaces Two spaces
Four spaces Four spaces
Tabs Tabs
Mixed spaces and tabs Mixed spaces and tabs

What does CSRF stand for in web development?

1 Mark(s)

Your Answer:

Cross-Site Resource Framework Cross-Site Resource Framework
Cross-Site Response Forgery Cross-Site Response Forgery
Cross-Site Request Forgery Cross-Site Request Forgery
Cross-Site Request Framework Cross-Site Request Framework

#pragma GCC poison should be followed by a list of identifiers that are . . . . . . . .

1 Mark(s)

Your Answer:

even in number even in number
odd in number odd in number
valid valid
invalid invalid

What is the access specifier that restricts access to members of a class to only its friend classes and member functions in C++?

1 Mark(s)

Your Answer:

friend friend
public public
private private
protected protected

What is the output of the following code: my_list = [1, 2, 3, 4, 5] print(my_list[1:4])

1 Mark(s)

Your Answer:

[2, 3, 4] [2, 3, 4]
[1, 2, 3] [1, 2, 3]
[1, 2, 3, 4] [1, 2, 3, 4]
[2, 3] [2, 3]

The full form of MPEG is____________________?

1 Mark(s)

Your Answer:

Motion Picture Effects Guide Motion Picture Effects Guide
Motion Picture Effect Grip Motion Picture Effect Grip
Modulated Pictures Effect Pages Modulated Pictures Effect Pages
Motion Picture Experts Group Motion Picture Experts Group

Which of the following uses the Beam penetration method?

1 Mark(s)

Your Answer:

Raster scan system Raster scan system
Random scan system Random scan system
Both (a) & (b) Both (a) & (b)
None of the above None of the above

Which of the following statement of a program is not right?

1 Mark(s)

Your Answer:

class teacher{ }; teacher s[5]; class teacher{ }; teacher s[5];
class teacher{ }s; class teacher{ }s;
class teacher{ }; teacher s; class teacher{ }; teacher s;
class teacher{ }s[]; class teacher{ }s[];

Which method is used to close a network connection in C#?

1 Mark(s)

Your Answer:

Close() Close()
Open() Open()
Read() Read()
Write() Write()

What will be the output of the following Python code? class Demo: def __init__(self): self.a = 1 self.__b = 1 def display(self): return self.__b obj = Demo() print(obj.__b)

1 Mark(s)

Your Answer:

The program has an error because there isn't any function to return self.a
The program has an error because b is private and display(self) is returning a private member
The program has an error because b is private and hence can't be printed
The program runs fine and 1 is printed The program runs fine and 1 is printed

Which of the following is valid conditional statement?

1 Mark(s)

Your Answer:

else else
els els
if else if else
None of the mentioned None of the mentioned

For barchart and . . . . . . . . non-trivial methods exist for tables and arrays, documented at barchart.table.

1 Mark(s)

Your Answer:

scatterplot scatterplot
dotplot dotplot
xyplot xyplot
scatterplot & xyplot scatterplot & xyplot

The red light cannot produce the electrons from a clean zinc metal surface because:

1 Mark(s)

Your Answer:

The energy of a photon of red light is equal to the work function of the zinc.
The energy of a photon of red light is greater than the work function of the zinc.
The energy of a photon of red light is less than the work function of the zinc.
None of the above None of the above

What is the purpose of Dojo framework?

1 Mark(s)

Your Answer:

Focuses on DOM and Ajax utilities Focuses on DOM and Ajax utilities
Advertises incredible depth Advertises incredible depth
Ajax utilities Ajax utilities
None of the mentioned None of the mentioned

Which function is used to allocate an array of elements in C?

1 Mark(s)

Your Answer:

calloc() calloc()
malloc() malloc()
alloc() alloc()
array() array()

SQL is a query language and has types_______________?

1 Mark(s)

Your Answer:

Data definition language Data definition language
Data manipulation language Data manipulation language
Data control language Data control language
All of the above All of the above

A metal used in the manufacturing of car batteries is known as:

1 Mark(s)

Your Answer:

copper copper
gold gold
lead lead
Sulphur Sulphur

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Data Structures Mock Test 10 : Question 1 of 49