Data Structures Mock Test 3

Number of states that are represented by 1 bit is said to be:

1 Mark(s)

Your Answer:

1 1
0 0
3 3
0 and 1 0 and 1

How to activate a cell in MS Excel?

1 Mark(s)

Your Answer:

Pressing an arrow key Pressing an arrow key
Clicking the cell Clicking the cell
Pressing the Tab key Pressing the Tab key
All of the above All of the above

What are the two parts of JavaScript libraries?

1 Mark(s)

Your Answer:

“script” tag and “body” tag “script” tag and “body” tag
External JavaScript and the “script” tag
“html” tag and “body” tag “html” tag and “body” tag
None of the mentioned None of the mentioned

Prototype model is useful when:

1 Mark(s)

Your Answer:

Requirements are unclear Requirements are unclear
Requirements are fixed Requirements are fixed
Project is short Project is short
Budget is low Budget is low

If a slit of width 'a' is illuminated by white light, then value of 'a' at which the first minimum for red light of wavelength 650 nm appears at θ=15°, is:

1 Mark(s)

Your Answer:

25 µm 25 µm
2.5 µm 2.5 µm
250 µm 250 µm
25 m 25 m

What is the output of the following Python code: array = [1, 2, 3]; print(array[-1])

1 Mark(s)

Your Answer:

1 1
2 2
3 3
IndexError IndexError

What will be the output of the following PHP code ? <?php $a = 10; $b = 11; if ($a $a || $b $b) print "hello"; else print "hi"; ?>

1 Mark(s)

Your Answer:

hi hi
hello hello
error error
no output no output

Which gate outputs 1 only if both inputs are 1?

1 Mark(s)

Your Answer:

OR OR
AND AND
NAND NAND
XOR XOR

Once your application can generate administrative links, you need to load those links into _________

1 Mark(s)

Your Answer:

php.ini php.ini
index.ini index.ini
index.php index.php
start.php start.php

What is the meaning of JavaScript Hoisting?

1 Mark(s)

Your Answer:

Moving declarations to bottom Moving declarations to bottom
Moving declarations to top Moving declarations to top
Hosting variables by itself Hosting variables by itself
None of the mentioned None of the mentioned

Which statement is most scientifically correct?

1 Mark(s)

Your Answer:

A) Science proves everything permanently
B) Science explains everything completely
C) Science improves understanding through testing
D) Science depends on authority D) Science depends on authority

What is the outcome of using R along with minification?

1 Mark(s)

Your Answer:

Sheer file size reduction Sheer file size reduction
File size increase File size increase
More efficient More efficient
None of the mentioned None of the mentioned

What can't be the value of a quality attribute?

1 Mark(s)

Your Answer:

autolow autolow
low low
high high
automedium automedium

DocBlocks are indicated by opening a comment using _________

1 Mark(s)

Your Answer:

/* /*
//* //*
/** /**
/*/ /*/

Pollen grains in water were first observed by Scottish scientist:

1 Mark(s)

Your Answer:

Democritus Democritus
Aristotle Aristotle
Robert brown Robert brown
Albert Einstein Albert Einstein

Which of the following measurement is relative to 1percentage of viewport’s larger dimension?

1 Mark(s)

Your Answer:

vw vw
vmax vmax
vmin vmin
ch ch

Which keyword awaits the result of a Promise?

1 Mark(s)

Your Answer:

wait wait
await await
pause pause
then then

http://www.google.com is called?

1 Mark(s)

Your Answer:

URL URL
IP Address IP Address
Website Name Website Name
None of these Answer None of these Answer

. . . . . . . . is an RPC framework that defines a compact binary serialization format used to persist data structures for later analysis.

1 Mark(s)

Your Answer:

Pig Pig
Hive Hive
Thrift Thrift
None of the mentioned None of the mentioned

Who developed Python Programming Language?

1 Mark(s)

Your Answer:

Wick van Rossum Wick van Rossum
Rasmus Lerdorf Rasmus Lerdorf
Guido van Rossum Guido van Rossum
Niene Stom Niene Stom

In Python, how can you find the index of a specific element in a list or tuple?

1 Mark(s)

Your Answer:

index() index()
find() find()
locate() locate()
position() position()

Which command shows active network connections and ports?

1 Mark(s)

Your Answer:

ping ping
netstat netstat
ipconfig ipconfig
nbtstat nbtstat

More devices can be connected to computer system through:

1 Mark(s)

Your Answer:

buffers buffers
interrupt interrupt
registers registers
controllers controllers

Which platform is R imported to after charting as a PDF?

1 Mark(s)

Your Answer:

Adobe Illustrator Adobe Illustrator
Adobe Photoshop Adobe Photoshop
Both Adobe Illustrator and Adobe Photoshop
None of the mentioned None of the mentioned

How destructor overloading is done?

1 Mark(s)

Your Answer:

By changing the number of parameters By changing the number of parameters
By changing the parameters type By changing the parameters type
By changing both the number of parameters and their type
No chance for destructor overloading No chance for destructor overloading

What does pip stand for python?

1 Mark(s)

Your Answer:

Pip Installs Python Pip Installs Python
Pip Installs Packages Pip Installs Packages
Preferred Installer Program Preferred Installer Program
All of the mentioned All of the mentioned

How do you create a theme with a dark background in ggplot2?

1 Mark(s)

Your Answer:

theme_dark() theme_dark()
theme_bg_color("dark") theme_bg_color("dark")
dark_theme() dark_theme()
background_dark() background_dark()

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

1 Mark(s)

Your Answer:

To rename a file To rename a file
To delete a file To delete a file
To check if a file exists To check if a file exists
To create a new file To create a new file

How can you get the absolute path of a file in Ruby?

1 Mark(s)

Your Answer:

Using File.real_path method Using File.real_path method
Using File.expand_path method Using File.expand_path method
Using File.path method Using File.path method
None of the above None of the above

When arithmetic, logic and control unit of a computer are combined into a single unit, it is known as:

1 Mark(s)

Your Answer:

central processing unit central processing unit
memory unit memory unit
I/O unit I/O unit
operating unit operating unit

Which of the following is not an in-built software application found in MS Windows?

1 Mark(s)

Your Answer:

Paint Paint
CD Player CD Player
Disk Defragmentor Disk Defragmentor
Volume Control Volume Control
MS Word MS Word

Which of following show document name and information?

1 Mark(s)

Your Answer:

Title Bar Title Bar
Format Format
Insert tab Insert tab
None of these None of these

Non return-to-zero-level (NRZ-L) and Non return-to-zero-invert (NRZ-I) both have an average signal rate of:

1 Mark(s)

Your Answer:

N N
N/8 N/8
N/4 N/4
N/2 N/2

Computer line printer is faster than:

1 Mark(s)

Your Answer:

daisy wheel printer daisy wheel printer
dot matrix printer dot matrix printer
character printer character printer
chain printer chain printer

What function is used to create a new variable in a dplyr data frame based on existing variables?

1 Mark(s)

Your Answer:

create_var() create_var()
mutate() mutate()
new_variable() new_variable()
add_column() add_column()

Which of the following can be used to create a symbolic link?

1 Mark(s)

Your Answer:

os.symlink() os.symlink()
os.symb_link() os.symb_link()
os.symblin() os.symblin()
os.ln() os.ln()

Which of the following correctly describes a stack's push operation in terms of its effect on the stack?

1 Mark(s)

Your Answer:

Adds an element to the top of the stack Adds an element to the top of the stack
Removes the top element of the stack Removes the top element of the stack
Retrieves the top element without removal
Checks the stack size Checks the stack size

How do you change column width to fit the contents?

1 Mark(s)

Your Answer:

Double-click the boundary to the right of the column heading
Single-click to the boundary to the left of the column heading
Press ALT and single-click anywhere in the column
None of these None of these

The application layer provides the basis for:

1 Mark(s)

Your Answer:

email services email services
frame division frame division
file making file making
code making code making

If one "automatic" solution is the trivial solution. The solution of a linear homogeneous equation is a:

1 Mark(s)

Your Answer:

elementary function elementary function
complementary function complementary function
homogeneous function homogeneous function
none of above none of above

When assessing the table structure of an acquired set of tables with data, determining foreign keys is (part of) the:

1 Mark(s)

Your Answer:

first step. first step.
second step. second step.
third step. third step.
fourth step. fourth step.

What will be the output of the following Python code? x = (i for i in range(3)) for i in x: print(i)

1 Mark(s)

Your Answer:

0 1 2 0 1 2
error error
0 1 2 0 1 2 0 1 2 0 1 2
none of the mentioned none of the mentioned

FDMA stands for:

1 Mark(s)

Your Answer:

Frequency Division Multiple Access Frequency Division Multiple Access
Fast Data Multiple Access Fast Data Multiple Access
Frequency Data Multiple Access Frequency Data Multiple Access
Fast Division Multiple Access Fast Division Multiple Access

Which of the following is a read-only property?

1 Mark(s)

Your Answer:

PerformanceTiming.navigationStart PerformanceTiming.navigationStart
PerformanceTiming.fetchStart PerformanceTiming.fetchStart
PerformanceTiming.navigationStart & PerformanceTiming.fetchStart
None of the mentioned None of the mentioned

, & are the tags of …

1 Mark(s)

Your Answer:

list list
text text
body body
table table

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

1 Mark(s)

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

What is a specific instance of a baseline or configuration item ?

1 Mark(s)

Your Answer:

Software Software
Configuration Configuration
Version Version
Status Accounting Status Accounting

A durable transaction is one in which all committed changes are permanent.

1 Mark(s)

Your Answer:

True True
False False

Which method is used to check if all elements in a collection satisfy a condition in Ruby enumerators?

1 Mark(s)

Your Answer:

any? any?
all? all?
one? one?
None of the above None of the above

What is the purpose of image replacement?

1 Mark(s)

Your Answer:

To replace an image To replace an image
To implement special effects To implement special effects
Removal of image rollovers Removal of image rollovers
Implementation of image rollovers Implementation of image rollovers

Identify the process done in the below code snippet o = {x:1, y:{z:[false,null,""]}}; s = JSON.stringify(o); p = JSON.parse(s);

1 Mark(s)

Your Answer:

Object Encapsulation Object Encapsulation
Object Serialization Object Serialization
Object Abstraction Object Abstraction
Object Encoding Object Encoding

Which technology creates a secure tunnel over the internet?

1 Mark(s)

Your Answer:

VLAN VLAN
NAT NAT
VPN VPN
DNS DNS

Out of the following operators (^, *, +, &, $), the one having highest priority is . . . . . . . .

1 Mark(s)

Your Answer:

+ +
$ $
^ ^
& &

Which of the following are incorrect form of StringBuffer class constructor?

1 Mark(s)

Your Answer:

StringBuffer() StringBuffer()
StringBuffer(int size) StringBuffer(int size)
StringBuffer(String str) StringBuffer(String str)
StringBuffer(int size , String str) StringBuffer(int size , String str)

How can we connect to database in a web application?

1 Mark(s)

Your Answer:

oracle sql developer oracle sql developer
toad toad
JDBC template JDBC template
mysql mysql

For which of these storage engines are configuration options always built?

1 Mark(s)

Your Answer:

Falcon Falcon
FEDERATED FEDERATED
InnoDB InnoDB
MyISAM MyISAM

What are the keyboard shortcut keys to paste special?

1 Mark(s)

Your Answer:

ALT + H + V + F ALT + H + V + F
ALT + H + V + P ALT + H + V + P
ALT + H + V + O ALT + H + V + O
ALT + H + V + S ALT + H + V + S

If a tuple inserted into the view does not satisfy the view's where clause condition, the insertion is:

1 Mark(s)

Your Answer:

Inserted Inserted
Queued Queued
Stored Stored
Rejected Rejected

Which of the following techniques can be used to solve the N Queens problem iteratively?

1 Mark(s)

Your Answer:

Depth-First Search (DFS) Depth-First Search (DFS)
Breadth-First Search (BFS) Breadth-First Search (BFS)
Hill Climbing Hill Climbing
Simulated Annealing Simulated Annealing

A Decoder converts:

1 Mark(s)

Your Answer:

Binary to Decimal Binary to Decimal
Decimal to Binary Decimal to Binary
Hex to Octal Hex to Octal
Text to Binary Text to Binary

Numbers in R are generally treated as . . . . . . . . precision real numbers.

1 Mark(s)

Your Answer:

single single
double double
real real
imaginary imaginary

What is the primary function of Apache Flume in Hadoop?

1 Mark(s)

Your Answer:

Execute MapReduce jobs Execute MapReduce jobs
Manage computation resources Manage computation resources
Collect, aggregate, and transport large amounts of log data
Perform data analytics in Hadoop Perform data analytics in Hadoop

Which function is used to select variables and observations from a given dataset?

1 Mark(s)

Your Answer:

Subset() Subset()
Sample() Sample()
While() While()
Signal() Signal()

Storage area for E-mail messages is called

1 Mark(s)

Your Answer:

folder folder
file file
mail box mail box
directory directory

Which device creates a collision domain per port?

1 Mark(s)

Your Answer:

Hub Hub
Switch Switch
Repeater Repeater
Cable Cable

What is the result of the expression "Hello".toUpperCase().toLowerCase() in Java?

1 Mark(s)

Your Answer:

"Hello" "Hello"
"HELLO" "HELLO"
"hello" "hello"
None of These None of These

In an AVL tree, what happens when a node has a balance factor of 0?

1 Mark(s)

Your Answer:

It is an internal node. It is an internal node.
It needs to be rotated. It needs to be rotated.
It is balanced and requires no changes. It is balanced and requires no changes.
It is a leaf node. It is a leaf node.

What is the result of the expression 5 > 3 ? "Yes" : "No" in Ruby?

1 Mark(s)

Your Answer:

Yes Yes
No No
5 5
3 3

What is the primary role of the Hadoop NodeManager in the YARN architecture?

1 Mark(s)

Your Answer:

Execute MapReduce jobs Execute MapReduce jobs
Manage computation resources Manage computation resources
Manage task execution in MapReduce jobs Manage task execution in MapReduce jobs
Manage metadata of HDFS Manage metadata of HDFS

Given input string = "ABCDABCATRYCARCABCSRT" and pattern string = "CAT". Find the first index of the pattern match using quick search algorithm.

1 Mark(s)

Your Answer:

2 2
6 6
11 11
14 14

A number of independent investigators have developed a team-oriented approach to requirements gathering that can be applied to establish the scope of a project called ?

1 Mark(s)

Your Answer:

JAD JAD
CLASS CLASS
FAST FAST
None of the mentioned None of the mentioned

Sally in data processing uses . . . . . . . . to cleanse and prepare the data.

1 Mark(s)

Your Answer:

Pig Pig
Hive Hive
HCatalog HCatalog
Impala Impala

Kilo means in SI is one:

1 Mark(s)

Your Answer:

thousand thousand
hundred hundred
ten ten
million million

Which of the following property adds padding to the top of an element?

1 Mark(s)

Your Answer:

height height
padding-height padding-height
top top
padding-top padding-top

Which is the correct format of an Email address?

1 Mark(s)

Your Answer:

You&website.com You&website.com
You@website.com You@website.com
You$com.pk You$com.pk
None of these Answer None of these Answer

How do you declare a reference variable in C++?

1 Mark(s)

Your Answer:

type &ref; type &ref;
ref type; ref type;
type ref; type ref;
&type ref; &type ref;

What will be the output of the following Java code? class output { public static void main(String args[]) { char c[]={'a', '1', 'b' ,' ' ,'A' , '0'}; for (int i = 0; i

1 Mark(s)

Your Answer:

a is a lower case Letter is White space character
b is a lower case Letter is White space character
a is a lower case Letter A is an upper case Letter
a is a lower case Letter 0 is a digit a is a lower case Letter 0 is a digit

Evaluating Your Answers

Data Structures Mock Test 3 : Question 1 of 77