Ruby Mock Test 15 - Online MCQ Exam

What will be the output of the following C++ code? #include <iostream> #include <exception> using namespace std; class myexc: public exception { virtual const char* what() const throw() { return "My exception"; } } myex; int main () { try { throw myex; } catch (exception& e) { cout << e.what() << endl; } return 0; }

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Your Answer:

My My
My exception My exception
No exception No exception
exception exception

Which function is used to delete a file in C?

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Your Answer:

deletefile() deletefile()
remove() remove()
erasefile() erasefile()
delete() delete()

If angular position of the reference line changes from θ1 to θ2, the body undergoes an:

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Your Answer:

angular velocity angular velocity
angular displacement angular displacement
linear displacement linear displacement
linear velocity linear velocity

Annotation of plots in any plotting system involves adding points, lines, or text to the plot, in addition to customizing axis labels or adding titles. Different plotting systems have different sets of functions for annotating plots in this way. Which of the following functions can be used to annotate the panels in a multi-panel lattice plot?

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Your Answer:

points() points()
panel.abline() panel.abline()
lines() lines()
axis() axis()

The send window in the Go-Back-N Protocol is an abstract concept defining an imaginary box with:

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Your Answer:

one variable one variable
two variables two variables
three variables three variables
four variables four variables

Magnitude of net force required to prevent the body from falling freely is termed as:

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Your Answer:

weight weight
gravitational force gravitational force
distance distance
acceleration acceleration

In_______________mode, the communication channel is used in both directions at the same time?

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Your Answer:

Full-duplex Full-duplex
Simplex Simplex
Half-duplex Half-duplex
None of the above None of the above

The substance dissolved in the solvent is known as:

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Your Answer:

solvent solvent
insoluble insoluble
soluble soluble
solute solute

An array of similar data types which themselves are a collection of dissimilar data type are . . . . . . . .

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Your Answer:

Linked Lists Linked Lists
Trees Trees
Array of Structure Array of Structure
All of the mentioned All of the mentioned

In Internet Protocol Version (IPv4), a machine drops the header and trailer, when it receives a:

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Your Answer:

signal signal
frame frame
service service
request request

What is the main advantage of using a linked list to implement a stack compared to an array?

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Your Answer:

No fixed size limit No fixed size limit
Better cache locality Better cache locality
Faster access time Faster access time
Simpler implementation Simpler implementation

What is the return type of Constructors?

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Your Answer:

int int
float float
void void
none of the mentioned none of the mentioned

If θ is angular displacement, Ω angular velocity and α is angular acceleration, then by appropriate kinematic equation, Ωt-1/2αt2=:

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Your Answer:

θ θ
θ-θo θ-θo
θ+θo θ+θo
θo θo

Capability of translating voice into text is known as:

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Your Answer:

speech recognition speech recognition
voice recognition voice recognition
both A and B both A and B
image recognition image recognition

You have linked SQL*Plus to an external text editor. To invoke the text editor for use within SQL*Plus, which command do you use?

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Your Answer:

Open [FileName] Open [FileName]
Show [FileName] Show [FileName]
Alter [FileName] Alter [FileName]
Edit [FileName] Edit [FileName]

What is the size of a character literal in C and C++?

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Your Answer:

4 and 1 4 and 1
1 and 4 1 and 4
1 and 1 1 and 1
4 and 4 4 and 4

Which one is an example of database designing software?

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Your Answer:

MS Word MS Word
MS Excel MS Excel
MS Access MS Access
None of these None of these

What will be the output of the following PHP code ? <?php $a = 97; switch(?$a) { case "a": print "hi"; break; case 97: print "hello"; break; default: print "hi1"; } ?>

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Your Answer:

hihellohi1 hihellohi1
hi hi
hihello hihello
hello hello

Important contributions to classical physics especially classical mechanics were provided by:

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Your Answer:

Issac Newton Issac Newton
Albert Einstein Albert Einstein
Carl Friedrich Gauss Carl Friedrich Gauss
Euclid Euclid

Keyboard controller which places a code into part of its memory is called:

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Your Answer:

keyboard processor keyboard processor
keyboard buffer keyboard buffer
keyboard programmer keyboard programmer
keyboard modifier keyboard modifier

The characteristic dimensions of fibers are the basis of their:

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Your Answer:

use use
bonding bonding
properties properties
strength strength

On what basis of a variable, OS allocates memory and decides what can be stored in the reserved memory?

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Your Answer:

Data bases Data bases
Data sets Data sets
Data types Data types
Lists Lists

Which operator among the following is used to perform the operation of boxing, unboxing, reference and identity conversions?

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Your Answer:

is is
as as
typeof typeof
all of the mentioned all of the mentioned

Which algorithm is used for finding the Minimum Spanning Tree?

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Your Answer:

Dijkstra Dijkstra
DFS DFS
Kruskal's Kruskal's
Floyd-Warshall Floyd-Warshall

SQL can be used to:

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Your Answer:

create database structures only. create database structures only.
query database data only. query database data only.
modify database data only. modify database data only.
All of the above can be done by SQL. All of the above can be done by SQL.

A body is moving in a circular path under centripetal force. The work done by this force is

1 Mark(s)

Your Answer:

A) positive A) positive
B) negative B) negative
C) zero C) zero
D) infinite. D) infinite.

Which pointer holds the address of another pointer?

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Your Answer:

Pointer to Pointer Pointer to Pointer
Null Pointer Null Pointer
Void Pointer Void Pointer
File Pointer File Pointer

What will be the output of the following Python code? x=10 y=8 assert x>y, 'X too small'

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Your Answer:

Assertion Error Assertion Error
10 8 10 8
No output No output
108 108

What is the significance of the Hadoop Secondary NameNode in the architecture?

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Your Answer:

Failover for the NameNode Failover for the NameNode
Store a backup of the entire HDFS metadata
Manage computation resources Manage computation resources
Manages ZooKeeper configurations Manages ZooKeeper configurations

To remove duplicate rows from the results of an SQL SELECT statement, the ________ qualifier specified must be included.

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Your Answer:

ONLY ONLY
UNIQUE UNIQUE
DISTINCT DISTINCT
SINGLE SINGLE

Output will be: $array = array(0, 1, 2); $array = array_pad($array, -6, ‘NEW’);

1 Mark(s)

Your Answer:

Array ( [1] => NEW [2] => NEW [3] => NEW [4] => 0 [5] => 1 [6] => 2 )
Array ( [-1] => NEW [-2] => NEW [-3] => NEW [-4] => 0 [-5] => 1 [-6] => 2 )
Array ( [0] => NEW [-1] => NEW [-2] => NEW [-3] => 0 [-4] => 1 [-5] => 2 )
Array ( [0] => NEW [1] => NEW [2] => NEW [3] => 0 [4] => 1 [5] => 2 )

Which traversal algorithm can be used to check if a graph is bipartite?

1 Mark(s)

Your Answer:

Neither BFS nor DFS Neither BFS nor DFS
DFS DFS
BFS BFS
Both BFS and DFS Both BFS and DFS

The kingdom in which photosynthesis can take place is:

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Your Answer:

plant plant
animal animal
plant and animal plant and animal
fungi fungi

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Ruby Mock Test 15 : Question 1 of 33