Ruby Mock Test 9 - Online MCQ Exam

What will be the output of the following C++ code? #include <iostream> #include <algorithm> #include <vector> using namespace std; int main () { vector<int> myvector; for (int i = 1; i < 6; ++i) myvector.push_back(i); reverse(myvector.begin(), myvector.end()); for (vector<int> :: iterator it = myvector.begin(); it != myvector.end(); ++it) cout << ' ' << *it; return 0; }

1 Mark(s)

Your Answer:

1 2 3 4 5 1 2 3 4 5
5 4 3 2 1 5 4 3 2 1
0 1 2 3 4 0 1 2 3 4
5 4 1 2 3 5 4 1 2 3

When the child entity is required, we are restricted from creating a new parent row without also creating a corresponding child row at the same time.

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Your Answer:

True True
False False

The while loop repeats a set of code while the condition is not met?

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Your Answer:

True True
False False

Locking may cause which of the following problems?

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Your Answer:

Erroneous updates Erroneous updates
Deadlock Deadlock
Versioning Versioning
All of the above All of the above

What will be the output of the following Java program? class A { public int i; public int j; A() { i = 1; j = 2; } } class B extends A { int a; B() { super(); } } class super_use { public static void main(String args[]) { B obj = new B(); System.out.println(obj.i + " " + obj.j) } }

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Your Answer:

1 2 1 2
2 1 2 1
Runtime Error Runtime Error
Compilation Error Compilation Error

Which of the following applications/software can be used to create a favicon?

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Your Answer:

Unity Unity
Adobe Photoshop Adobe Photoshop
Dreamweaver Dreamweaver
VLC VLC

The liquefied air is put into an apparatus known as:

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Your Answer:

non-fractional column non-fractional column
non-fractional column non-fractional column
fractional row fractional row
fractionating column fractionating column

The jQuery method used to remove the set of matched elements is -

1 Mark(s)

Your Answer:

delete() method delete() method
empty() method empty() method
remove() method remove() method
None of the above None of the above

Maximum stress that a material can withstand while being stretched or pulled before breaking is called:

1 Mark(s)

Your Answer:

ultimate strength ultimate strength
yield strength yield strength
compressive strength compressive strength
young modulus young modulus

Consider the following code snippet function f(o) { if (o === undefined) debugger; }

1 Mark(s)

Your Answer:

It does nothing but a simple breakpoint It does nothing but a simple breakpoint
It debugs the error in that statement and restarts the statement’s execution
It is used as a keyword that debugs the entire program at once
All of the mentioned All of the mentioned

What refers to the externally observable structure of an OO program ?

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Your Answer:

Deep structure Deep structure
Surface structure Surface structure
Core structure Core structure
All of the mentioned All of the mentioned

Which of the following is the product of data processing?

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Your Answer:

Information Information
Data Data
Software Program Software Program
System System

Which of the following is not paper size in MS-Word 2016? Legal, Executive, Landscape, A3

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Your Answer:

Legal Legal
Executive Executive
Landscape Landscape
A3 A3

What will be the output of the following Python code? x = 'abcd' for i in range(len(x)): print(i)

1 Mark(s)

Your Answer:

error error
1 2 3 4 1 2 3 4
a b c d a b c d
0 1 2 3 0 1 2 3

Which of the following is a design pattern?

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Your Answer:

Behavioral Behavioral
Structural Structural
Abstract Factory Abstract Factory
All of the mentioned All of the mentioned

Can inline functions be defined inside a class?

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Your Answer:

Yes Yes
No No
Only if static Only if static
Only if friend Only if friend

The gases in the air can be separated by process of:

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Your Answer:

distillation distillation
evaporation evaporation
fractional distillation fractional distillation
decomposition decomposition

Easy installation is the main advantage of:

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Your Answer:

Ring topology Ring topology
Bus topology Bus topology
Mesh topology Mesh topology
Star topology Star topology

What is the result of the expression (6 + 3) * 2 in Java?

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Your Answer:

12 12
15 15
18 18
9 9

When two or more bulbs are connected in same electrical circuit its called:

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Your Answer:

parallel circuit parallel circuit
series circuit series circuit
multiple circuit multiple circuit
complex circuit complex circuit

The true definition by information of Metadata, means:

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Your Answer:

Number of columns in the result Number of columns in the result
Name of a specified column Name of a specified column
Type of a specified column Type of a specified column
All of the Above All of the Above

''Water' is a:

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Your Answer:

element element
compound compound
mixture mixture
solute solute

Batch processing is the execution of series of jobs in a:

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Your Answer:

memory memory
software software
hardware hardware
Program Program

Which protocol is commonly used for file transfer in Java Networking?

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Your Answer:

FTP (File Transfer Protocol) FTP (File Transfer Protocol)
SMTP (Simple Mail Transfer Protocol) SMTP (Simple Mail Transfer Protocol)
HTTP (Hypertext Transfer Protocol) HTTP (Hypertext Transfer Protocol)
UDP (User Datagram Protocol) UDP (User Datagram Protocol)

Assume that we have to convert “false” that is a non-string to string. The command that we use is (without invoking the “new” operator)

1 Mark(s)

Your Answer:

false.toString() false.toString()
String(false) String(false)
String newvariable=”false” String newvariable=”false”
Both false.toString() and String(false) Both false.toString() and String(false)

Selecting a data type involves which of the following?

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Your Answer:

Maximize storage space Maximize storage space
Represent most values Represent most values
Improve data integrity Improve data integrity
All of the above. All of the above.

Hardware components which are used by user to enter data and instructions into the computer are termed as:

1 Mark(s)

Your Answer:

input devices input devices
output devices output devices
printer printer
scanner scanner

A station in a network forwards incoming packets by placing them on its shortest output queue. What routing algorithm is being used?

1 Mark(s)

Your Answer:

hot potato routing hot potato routing
flooding flooding
static routing static routing
delta routing delta routing
None of the above None of the above

Magnetic moment of electron is:

1 Mark(s)

Your Answer:

1.41x10-26 J/T 1.41x10-26 J/T
9.28x10-24 J/T 9.28x10-24 J/T
5.05x10-27 J/T 5.05x10-27 J/T
1.28x10-24 J/T 1.28x10-24 J/T

What is the primary function of the Pig Latin LOAD statement?

1 Mark(s)

Your Answer:

Load data into a relation Load data into a relation
Perform data analytics in Hadoop Perform data analytics in Hadoop
Manage computation resources Manage computation resources
Execute MapReduce jobs Execute MapReduce jobs

What term will be used when you hold the left key of the mouse on an object and move it on the slide?

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Your Answer:

Dragging Dragging
Moving Moving
Highlighting Highlighting
None of the above None of the above

Time-division multiplexing is designed for:

1 Mark(s)

Your Answer:

digital signals digital signals
analog signals analog signals
optical signals optical signals
magnetic signals magnetic signals

Which macro is used to check assertions?

1 Mark(s)

Your Answer:

check() check()
verify() verify()
assert() assert()
test() test()

Specific heat of Silver in joules is:

1 Mark(s)

Your Answer:

386 J/kg.k 386 J/kg.k
128 J/kg.k 128 J/kg.k
236 J/kg.k 236 J/kg.k
900 J/kg.k 900 J/kg.k

When two events occur at same location in an inertial reference frame, time interval between them is called:

1 Mark(s)

Your Answer:

linear time linear time
time dilation time dilation
proper time proper time
fixed time fixed time

In C++, what is the purpose of the 'do-while' loop?

1 Mark(s)

Your Answer:

Terminates the loop Terminates the loop
Executes a block of code only once Executes a block of code only once
Executes a block of code repeatedly until a condition becomes false
Executes a block of code repeatedly until a condition becomes true

Bellmann Ford algorithm was first proposed by . . . . . . . .

1 Mark(s)

Your Answer:

Richard Bellmann Richard Bellmann
Alfonso Shimbe Alfonso Shimbe
Lester Ford Jr Lester Ford Jr
Edward F. Moore Edward F. Moore

Teeth are eroded by conversion of sugar food into acid by:

1 Mark(s)

Your Answer:

bacteria bacteria
virus virus
both a and b both a and b
fungus fungus

What is the purpose of the basic validation?

1 Mark(s)

Your Answer:

Data correctness Data correctness
Mere data existence Mere data existence
Both Data correctness and Mere data existence
None of the mentioned None of the mentioned

Quadrature Amplitude Modulation (QAM) is a combination of:

1 Mark(s)

Your Answer:

BPSK and PSK BPSK and PSK
ASK and BPSK ASK and BPSK
ASK and PSK ASK and PSK
BPSK and QPSK BPSK and QPSK

In MS Word, 'Cross-reference' is used to?

1 Mark(s)

Your Answer:

Compare fonts Compare fonts
Link to another part of the same document
Compare two documents Compare two documents
None of these None of these

Which traversal algorithm would you use to find the shortest path in an unweighted graph?

1 Mark(s)

Your Answer:

Depth-First Search (DFS) Depth-First Search (DFS)
Dijkstra's Algorithm Dijkstra's Algorithm
Breadth-First Search (BFS) Breadth-First Search (BFS)
Floyd-Warshall Algorithm Floyd-Warshall Algorithm

Whenever the view relation is accessed, its tuples are created through:

1 Mark(s)

Your Answer:

Execution Execution
Compiling Compiling
Storing Storing
Computing Computing

The first 3 codes in Internet Protocol Version (IPv4) addresses, the telephone networks define the:

1 Mark(s)

Your Answer:

IP code IP code
local code local code
area code area code
block code block code

In Pig, what is the purpose of the DISTINCT statement?

1 Mark(s)

Your Answer:

Load data into a relation Load data into a relation
Filter records based on a condition Filter records based on a condition
Group data based on a specified key Group data based on a specified key
Remove duplicate records Remove duplicate records

Which attribute of the following is related to the font tag?

1 Mark(s)

Your Answer:

face face
size size
color color
All of the above All of the above

Carbon has the symbol:

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Your Answer:

Ca Ca
Cl Cl
Cr Cr
C C

Plants in deserts have only few stomata to reduce:

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Your Answer:

water intake water intake
water loss water loss
mineral content mineral content
oxygen intake oxygen intake

What type of device is a computer printer ?

1 Mark(s)

Your Answer:

Input Input
Output Output
Software Software
Storage Storage

The introduction of dead or weekend germs into body orally or by injection so as to train body to fight against the real germ should they attack body is:

1 Mark(s)

Your Answer:

vaccination vaccination
anticipation anticipation
immunity immunity
variation variation

Initialization of variable can be done by writing _____ operator in between variable name and operand value.

1 Mark(s)

Your Answer:

EQUALS EQUALS
= =
VALUE VALUE
== ==

A set of inter-related components that collect, process, store and distribute information to support decision making and control in an organization best defines_________________?

1 Mark(s)

Your Answer:

a network a network
hardware hardware
an information system an information system
communications technology communications technology

The system in which the names are defined in an inverted tree structure with the root at the top is called:

1 Mark(s)

Your Answer:

name space name space
domain name space domain name space
hierarchical name space hierarchical name space
flat name space flat name space

Type of computer memory which is nonvolatile and can't be changed by the user is:

1 Mark(s)

Your Answer:

SRAM SRAM
DRAM DRAM
ROM ROM
RAM RAM

How do you delete a node from a linked list, given only a pointer to that node?

1 Mark(s)

Your Answer:

Update the head pointer Update the head pointer
Update the tail pointer Update the tail pointer
Copy the data from the next node to the current node and delete the next node
You cannot delete the node You cannot delete the node

Density of Mercury is:

1 Mark(s)

Your Answer:

5427 kg/m3 5427 kg/m3
5243 kg/m3 5243 kg/m3
3933 kg/m3 3933 kg/m3
687 kg/m3 687 kg/m3

When a class extends the Thread class ,it should override ............ method of Thread class to start that thread.

1 Mark(s)

Your Answer:

start() start()
run() run()
init() init()
go() go()

Infrared waves, that can be used for short range communication have frequencies between:

1 Mark(s)

Your Answer:

300 GHz to 700 THz 300 GHz to 700 THz
300 GHz to 800 THz 300 GHz to 800 THz
300 GHz to 100 THz 300 GHz to 100 THz
300 GHz to 400 THz 300 GHz to 400 THz

What kind of organisms are studied when examining a single drop of water?

1 Mark(s)

Your Answer:

A) Plants A) Plants
B) Birds B) Birds
C) Microorganisms C) Microorganisms
D) Insects D) Insects

If speed of wave on a string will increase, wave power will:

1 Mark(s)

Your Answer:

increase increase
decrease decrease
become constant become constant
become zero become zero

If int arr[5]; what is type of arr+1?

1 Mark(s)

Your Answer:

int* int*
int int
int& int&
int** int**

The global variable read count is used to keep the track of the number of:

1 Mark(s)

Your Answer:

Client Client
Server Server
Writers Writers
Readers Readers

A thread library provides the programmer an API for creating and managing:

1 Mark(s)

Your Answer:

Threads Threads
Operating System Operating System
Processor Processor
Memory Memory

The Carrier Sense Multiple Access/Collision Detection (CSMA/CD) is used to avoid the:

1 Mark(s)

Your Answer:

errors errors
multiple access multiple access
point to point access point to point access
collision collision

Which of these methods are member of Remote class?

1 Mark(s)

Your Answer:

checkIP() checkIP()
addLocation() addLocation()
AddServer() AddServer()
None of the mentioned None of the mentioned

What will be the output of the following R code? > x <- list(a = list(10, 12, 14), b = c(3.14, 2.81)) > x[[c(1, 3)]]

1 Mark(s)

Your Answer:

13 13
14 14
15 15
18 18

Magnets will attract each other if they are facing each other with:

1 Mark(s)

Your Answer:

like poles like poles
unlike poles unlike poles
S-S poles S-S poles
N-N poles N-N poles

Which of the following methods is used to determine whether the specified file exists in C#?

1 Mark(s)

Your Answer:

File.Ensure() File.Ensure()
File.Verify() File.Verify()
File.Exists() File.Exists()
File.Check() File.Check()

How do you find the length of a linked list?

1 Mark(s)

Your Answer:

Using the length property Using the length property
Using the size property Using the size property
Iterating through the list Iterating through the list
Using the count property Using the count property

Which of the following is valid declaration of pointer to function returning void and taking no arguments?

1 Mark(s)

Your Answer:

void *p(); void *p();
void (p)(); void (p)();
void p(); void p();
void &p(); void &p();

Define the term verification in V and V model?

1 Mark(s)

Your Answer:

Checking that we are building the system right
Making sure that it is what the user wants
Performed by an independent test team Performed by an independent test team
Checking that we are building the right system

A substance that lacks the characteristics of metals is known as:

1 Mark(s)

Your Answer:

transparent transparent
non-metal non-metal
metal metal
liquid liquid

Domains can have constraints, such as:

1 Mark(s)

Your Answer:

Like Like
AS AS
Valid Valid
Not Null Not Null

Let p1 be an integer pointer with a current value of 2000. What is the content of p1 after the expression p1++ has been evaluated?

1 Mark(s)

Your Answer:

2001 2001
2002 2002
2004 2004
2008 2008

What is the purpose of the `javax.servlet.http.HttpSessionBindingEvent` class in Java web applications?

1 Mark(s)

Your Answer:

To define JavaBean properties To define JavaBean properties
To execute SQL queries To execute SQL queries
To create JavaBeans To create JavaBeans
To represent events related to session attribute binding and unbinding

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

Carbon dioxide enters a leaf of a plant via:

1 Mark(s)

Your Answer:

stomata stomata
stem stem
roots roots
flowers flowers

Printer which uses temperature variations to achieve different colors is:

1 Mark(s)

Your Answer:

dye-sublimation dye-sublimation
thermal-wax thermal-wax
laser laser
inkjet inkjet

Evaluating Your Answers

Ruby Mock Test 9 : Question 1 of 78