Kotlin Mock Test 17 - Online MCQ Exam

What type of tree traversal involves visiting the root node, then recursively visiting the left subtree, and finally the right subtree?

1 Mark(s)

Your Answer:

Preorder Preorder
Inorder Inorder
Postorder Postorder
Level-order Level-order

What will be the output of the following PHP code ? <?php if (0.1) print "hi" ; else print "how are u"; ?>

1 Mark(s)

Your Answer:

how are u how are u
hi hi
error error
no output no output

Density of Venus is:

1 Mark(s)

Your Answer:

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

What is a time complexity for finding the longest substring that is repeated in a string?

1 Mark(s)

Your Answer:

O (log n!) O (log n!)
Ɵ (n!) Ɵ (n!)
O (n2+ n1) O (n2+ n1)
Ɵ (n) Ɵ (n)

Question: The complexity of the Closest Pair algorithm employing a Divide and Conquer technique is:

1 Mark(s)

Your Answer:

O(n) O(n)
O(n log n) O(n log n)
O(n^2) O(n^2)
O(log n) O(log n)

_______________is the ability of a device to “jump” directly to the requested data?

1 Mark(s)

Your Answer:

Sequential access Sequential access
Random access Random access
Quick access Quick access
All of the above All of the above

Device that takes data from user and convert it into the form that can be easily understandable by computer is:

1 Mark(s)

Your Answer:

storage device storage device
output device output device
input device input device
pointing device pointing device

X-windows operating system is an user interface that is:

1 Mark(s)

Your Answer:

command line interface command line interface
graphical user interface graphical user interface
batch interface batch interface
device interface device interface

Staining of heavy metal at times results in:

1 Mark(s)

Your Answer:

extra details extra details
less details less details
wrong details wrong details
enhanced details enhanced details

Which of the following is not a reserved character?

1 Mark(s)

Your Answer:

& &
> >
+ +
@ @

What is MS Word primarily used for?

1 Mark(s)

Your Answer:

Creating and editing presentations Creating and editing presentations
Creating and editing documents Creating and editing documents
Creating and editing images Creating and editing images
None of these None of these

What does the rstan package in R primarily facilitate?

1 Mark(s)

Your Answer:

Bayesian statistical modeling with Stan Bayesian statistical modeling with Stan
Time series analysis and forecasting Time series analysis and forecasting
Handling large datasets with parallel computing
Interactive data visualization and exploration

In the given graph, identify the shortest path having minimum cost to reach vertex E if A is the source vertex.

1 Mark(s)

Your Answer:

a-b-e a-b-e
a-c-e a-c-e
a-c-d-e a-c-d-e
a-c-d-b-e a-c-d-b-e

What is the correct way to declare a string array in C#?

1 Mark(s)

Your Answer:

string[] colors; string[] colors;
array colors; array colors;
string colors[]; string colors[];
colors[] = string; colors[] = string;

Which of the following is the another name for the error or bug in software or hardware?

1 Mark(s)

Your Answer:

Leech Leech
Squid Squid
Slug Slug
Glitch Answer Glitch Answer

Acceptable keyword in JAVA is:

1 Mark(s)

Your Answer:

Long Long
while while
Super Super
New New

Given an input arr = {2, 5, 7, 99, 899}; key = 899; What is the level of recursion?

1 Mark(s)

Your Answer:

5 5
2 2
3 3
4 4

A quantity representing the power to which a fixed number (the base) must be raised to produce a given number is termed as:

1 Mark(s)

Your Answer:

numeric numeric
logarithm logarithm
function function
derivative derivative

What will be the output of the following Java program? class recursion { int func (int n) { int result; if (n == 1) return 1; result = func (n - 1); return result; } } class Output { public static void main(String args[]) { recursion obj = new recursion() ; System.out.print(obj.func(5)); } }

1 Mark(s)

Your Answer:

0 0
1 1
120 120
None of the mentioned None of the mentioned

Virtual Memory is typically located in ?

1 Mark(s)

Your Answer:

RAM RAM
CPU CPU
Hard Drive Hard Drive
Flash Memory Flash Memory

In Java, which access modifier allows a method or variable to be accessed within the same package only?

1 Mark(s)

Your Answer:

private private
public public
protected protected
package-private package-private

A computer cannot “boot” if it does not have the _____system.?

1 Mark(s)

Your Answer:

Compiler Compiler
Loader Loader
Operating Operating
Assembler Assembler

The main method should be static for the reason

1 Mark(s)

Your Answer:

It can be accessed easily by the class loader.
It can be accessed by every method or variable without any hindrance.
It can be executed without creating any instance of the class.
None of the above None of the above

The length of IPv4 address is:

1 Mark(s)

Your Answer:

32 bits 32 bits
64 bits 64 bits
24 bits 24 bits
8 bits 8 bits

Which control structure is used to execute a block of code only if a condition is true in C?

1 Mark(s)

Your Answer:

for loop for loop
while loop while loop
if statement if statement
switch case switch case

Which of the following is correct to declare a 2D array?

1 Mark(s)

Your Answer:

int arr[2][3]; int arr[2][3];
int arr[3][2]; int arr[3][2];
int arr[][]=new int[2][3]; int arr[][]=new int[2][3];
Both A and B Both A and B

The first address in the block can be found by setting the rightmost 32-n bits to:

1 Mark(s)

Your Answer:

0's 0's
1's 1's
combination of 0 and 1s combination of 0 and 1s
null null

While creating relationship, when you drag a field of a field to drop into another table the mouse pointer changes into

1 Mark(s)

Your Answer:

a doctor's sign a doctor's sign
thin + sign thin + sign
outline rectangle outline rectangle
None of above None of above

Process control information is the additional information needed by the:

1 Mark(s)

Your Answer:

User User
Operating System Operating System
CPU CPU
Process Process

BSC comes under which of the following category?

1 Mark(s)

Your Answer:

Operation Operation
Radio Radio
Network Network
Mobile Mobile

4GL is an example of ________________ processing?

1 Mark(s)

Your Answer:

White Box White Box
Black Box Black Box
Functional Functional
Both Black Box & Functional Both Black Box & Functional

Call by value What is a potential risk of using call by reference?

1 Mark(s)

Your Answer:

Memory is duplicated Memory is duplicated
The function cannot modify the original argument
The function can inadvertently modify the original argument
It uses too much memory It uses too much memory

Which of the following statement is not true about preprocessor directives?

1 Mark(s)

Your Answer:

These are lines read and processed by the preprocessor
They do not produce any code by themselves
These must be written on their own line These must be written on their own line
They end with a semicolon They end with a semicolon

Which among the following is a typical declaration of an unrolled linked list in C?

1 Mark(s)

Your Answer:

#define SIZE N struct node { int node_count; int arr[SIZE]; struct node *next; };
#define SIZE N struct node { int arr[SIZE]; struct node *prev; struct node *top; };
#define SIZE N struct node { int node_count; struct node *next; };
#define SIZE N struct node { int node_count; int arr[SIZE]; };

What is the main idea behind grey-level slicing?

1 Mark(s)

Your Answer:

For brightening the relevant grey-valued pixels and preserving the background
To give all grey levels of a specific range high value and a low value to all other grey levels.
All of the above All of the above
None of the above None of the above

Which of the following feature of powerpoint allows us to quickly create a simple presentation?

1 Mark(s)

Your Answer:

Chart Wizard Chart Wizard
Auto content wizard Auto content wizard
Transition wizard Transition wizard
None of the above None of the above

In R, which package is commonly used for creating interactive 3D plots?

1 Mark(s)

Your Answer:

rgl rgl
plot3D plot3D
threeDplot threeDplot
interactive3D interactive3D

Which of these methods is used to compare two strings such that after comparison output returns different integer values as (0 for false, 1 for true)?

1 Mark(s)

Your Answer:

Equals () Equals ()
== operator == operator
Compare() Compare()
None of the mentioned None of the mentioned

What is the output of the code: for i in range(2, 8, 2): print(i)

1 Mark(s)

Your Answer:

2 4 6 2 4 6
2 4 8 2 4 8
2 3 4 2 3 4
2 5 8 2 5 8

The class at the top of exception class hierarchy is .................

1 Mark(s)

Your Answer:

ArithmeticException ArithmeticException
Throwable Throwable
Object Object
Exception Exception

How do you find the number with the highest value of x and y?

1 Mark(s)

Your Answer:

Math.max(x, y) Math.max(x, y)
Math.ceil(x, y) Math.ceil(x, y)
top(x, y) top(x, y)
ceil(x, y) ceil(x, y)

Which function key is used for refreshing Windows?

1 Mark(s)

Your Answer:

F1 F1
F2 F2
F5 F5
None of these None of these

Which WAN encapsulations can be configured on an asynchronous serial connection? 1. PPP 2. ATM 3. HDLC 4. SDLC 5. Frame Relay

1 Mark(s)

Your Answer:

1 and 2 1 and 2
2 and 4 2 and 4
3, 4 and 5 3, 4 and 5
All of the above All of the above

The organ that detects light and converts it into electro-chemical impulses is known as:

1 Mark(s)

Your Answer:

Eye Eye
Nose Nose
Ear Ear
Skin Skin

Ready the Query carefully: SELECT emp_name FROM department WHERE dept_name LIKE ' _____ Computer Science'; In the above-given Query, which of the following can be placed in the Query's blank portion to select the "dept_name" that also contains Computer Science as its ending string? ``` SELECT emp_name FROM department WHERE dept_name LIKE ' _____ Computer Science'; ```

1 Mark(s)

Your Answer:

& &
_ _
% %
$ $

The affinity audience can be defined as __________.

1 Mark(s)

Your Answer:

A user similar to that of your remarketing list
A marketing user who is willing to make a purchase
A user showing a continuous interest in the matter
A user similar to that of your customer list

In java a thread can be created by ..........

1 Mark(s)

Your Answer:

Extending the thread class. Extending the thread class.
Implementing Runnable interface. Implementing Runnable interface.
Both of the above Both of the above
None of these None of these

To implement a specified .NET Framework interface which directive is used:

1 Mark(s)

Your Answer:

@Register' @Register'
@Control' @Control'
@Reference' @Reference'
@Implements' @Implements'

Which device reduces collision domains but not broadcast domains?

1 Mark(s)

Your Answer:

Hub Hub
Switch Switch
Router Router
Repeater Repeater

In computer, step for maintaining the security of important data is known as:

1 Mark(s)

Your Answer:

data backup data backup
data protection data protection
data locking data locking
data securing data securing

What will be the output of the following PHP code ? <?php print_r "Hello world" ?>

1 Mark(s)

Your Answer:

Error Error
Hello World Hello World
Nothing Nothing
Missing semicolon error Missing semicolon error

In real-time interactive audio-video, mixing means combining several streams of traffic into:

1 Mark(s)

Your Answer:

1 stream 1 stream
2 stream 2 stream
3 stream 3 stream
4 stream 4 stream

In cell network, the basic unit of the of data exchange is called:

1 Mark(s)

Your Answer:

framing framing
switching switching
column column
cell cell

Which of the following CSS3 Color Feature like RGB color but adds an alpha channel value to specify the opacity of the color?

1 Mark(s)

Your Answer:

RGB RGB
RGBa RGBa
RGBaplha RGBaplha
AlphaRGB AlphaRGB

What does the matrix() function create in R?

1 Mark(s)

Your Answer:

A list of elements A list of elements
A one-dimensional array A one-dimensional array
A two-dimensional array A two-dimensional array
A data frame A data frame

Evaluating Your Answers

Kotlin Mock Test 17 : Question 1 of 55