Object Oriented Programming

Focuses on objects and data instead of actions and logic

Which of the following is a valid IPv6 address?

2001:0db8:85a3:0000:0000:8a2e:0370:7334

int x = 15; if (x < 10) cout << "x is less than 10"; else cout << "x is greater than or equal to 10";

x is greater than or equal to 10

multiple choice questions on network protocol in computer

B) A set of rules for data communication

What is a function in C++ programming?

A block of code that performs a specific task

What is Inheritance in C++?

Deriving new classes from existing classes

What is the purpose of using a For loop with an array in Visual Basic?

To iterate through the elements of an array

What does the addFirst(E e) method do in a LinkedList?

b) Adds the element at the beginning of the list.

What is the primary function of an Engine in Tomcat?

To process requests from Connectors

What is the primary function of a web server?

To store, process and deliver web pages to users

What will happen if you try to access an index that is out of bounds using the get() method?

b) It will throw an IndexOutOfBoundsException.

object-oriented programming

language that focuses on creating reusable patterns of code

What is the primary purpose of control statements in C++?

To control the flow of a program based on conditions

What is the primary difference between a web server and an application server?

Web servers serve static content, and other generate dynamic content

What happens when you try to add a duplicate element to a Set in Java?

The duplicate element is ignored.

What is STRUCTURE in C++?

a collection of different data types, to store and retrieve data that is not all the same type, data type to represent several different types of data with a single name

Which of the following is true about the Set interface in Java?

Extends the Collection interface

What are the main functions of network protocols?

Data transmission, error handling, and security

What does cout function do in C++

cout prints text on the computer’s screen

Which of the following is true about the TreeSet in Java?

It automatically sorts the elements in ascending order

What is the purpose of using arrays in programming?

To store and manipulate large amounts of data efficiently

Why are network protocols important?

B) They allow devices to communicate efficiently

What is the main purpose of a Connector in Tomcat?

To handle communications with the client

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Questions 165

Answers

1
Object Oriented Programming
a static field that is the same for each instance of a class
consists of data and the operations on that data
Focuses on objects and data instead of actions and logic
a unique occurrence of an object
2
Which protocol is primarily used for communication between web servers and clients?
TCP/IP
HTTP
SMPTP
FTP
3
Which of the following is a valid IPv6 address?
192.168.256.1
192.168.1.1
10.10.10.10
2001:0db8:85a3:0000:0000:8a2e:0370:7334
4
int x = 15; if (x < 10) cout << "x is less than 10"; else cout << "x is greater than or equal to 10";
x is greater than or equal to 10
No output
x is less than 10
Compilation error
5
multiple choice questions on network protocol in computer
C) A type of software for the internet
D) A hardware component in a network
A) A physical device used in networking
B) A set of rules for data communication
6
Which Set implementation is the most efficient for basic operations assuming no ordering requirements?
HashSet
EnumSet
LinkedHashSet
TreeSet
7
C++ is case sensitive
True
False
8
What is a function in C++ programming?
A loop that repeats a block of code
A variable that holds multiple values
A collection of related variables of the same type
A block of code that performs a specific task
9
How many octets are there in an IPv4 address?
4
2
6
6
10
Which of these classes is not part of Java’s collection framework?
d) Maps
c) LinkedList
b) HashMap
a) ArrayList
11
Pointers in C++ language are declared using
×
%
$
*
12
What is Inheritance in C++?
Overloading of classes
Deriving new classes from existing classes
Wrapping of data into a single class
Classes with same names
13
In C++ The switch-case is another?
Declaring
Data type
conditional structure
Loop
14
What is the purpose of using a For loop with an array in Visual Basic?
To declare an array
To iterate through the elements of an array
To resize an array
To delete an array
15
What does the addFirst(E e) method do in a LinkedList?
a) Adds the element at the end of the list.
c) Replaces the first element.
d) Throws an exception if the list is empty.
b) Adds the element at the beginning of the list.
16
What is the size of an IPv4 address?
16 bits
128 bits
64 bits
32 bits
17
Which of the following is an example of a web container?
Apache
Firefox
MySQL
Tomcat
18
What is the primary function of an Engine in Tomcat?
To generate web pages
To process requests from Connectors
To store application data
To manage network connections
19
What is the primary function of a web server?
To create web pages
To store, process and deliver web pages to users
To write Java code
To manage databases
20
Which heading tag is the largest in size?
b) <h2>
d) <h6>
a) <h1>
c) <h3>
21
Which statement is used to handle all unmatched cases in a Select Case structure?
c) Case Else
d) Case Other
a) Case Any
b) Default
22
Which of these operations is not directly supported by the Set interface?
Adding elements
Retrieving elements by index
Checking if a set contains an element
Removing elements
23
What will happen if you try to access an index that is out of bounds using the get() method?
a) It will return null.
b) It will throw an IndexOutOfBoundsException.
c) It will return -1.
d) It will return an empty string.
24
object-oriented programming
language that focuses on creating reusable patterns of code
An instance of a class.
Putting a function inside another function
The language that people use in daily conversations
25
What is the primary purpose of control statements in C++?
To define functions
To control the flow of a program based on conditions
To declare variables
To perform arithmetic operations
26
Which method would you use to remove the last element from a LinkedList?
d) popLast()
a) removeLast()
b) deleteLast()
c) remove()
27
What is the primary difference between a web server and an application server?
Application servers can only run Java applications
Web servers are more secure than application servers
Web servers are faster than application servers
Web servers serve static content, and other generate dynamic content
28
What happens when you try to add a duplicate element to a Set in Java?
The duplicate element is ignored.
It adds the element and allows duplicates.
It replaces the existing element with the duplicate.
It throws an exception.
29
What is the use of an ARRAY in 'C++' programming?
To store the values.
To execute a task multiple number of times.
To count the total characters.
To store multiple values.
30
Correct definition of structure in C ++
struct {int a;}
struct a_struct int a;
struct a_struct {int a;}
struct a_struct {int a;};
31
What is STRUCTURE in C++?
a collection of different data types
to store and retrieve a collection of information all of the same type
to store and retrieve data that is not all the same type
data type to represent several different types of data with a single name
32
What is the reserved IP address for the loopback function in IPv4?
192.168.1.1
255.255.255.0
127.0.0.1
0.0.0.0
33
What is the correct HTML tag for the title of a document?
c) <meta>
a) <title>
b) <head>
d) <header>
34
Which of the following is true about the Set interface in Java?
Maintains elements in insertion order
Allows accessing elements by index
Extends the Collection interface
Allows duplicate elements
35
which is ternary operators in C?
?
<
+
#
36
What are the main functions of network protocols?
Only data transmission
Data transmission, error handling, and security
Only security measures
Only error correction
37
What does cout function do in C++
cout does nothing, but pout
cout makes up the insertion operator
cout set up the directive
cout prints text on the computer’s screen
38
How do you access the third element of a one-dimensional array named arr in Visual Basic?
arr(2)
arr[2]
arr(3)
arr[3]
39
A constructor in C++, is used to:
create objects & assign memory
None of the given options
construct code
consume memory
40
Which of the following is true about the TreeSet in Java?
It allows duplicate elements
It automatically sorts the elements in ascending order
It is implemented using a hash table
It allows null values
41
What is the index of the first element in a Visual Basic array?
2
-1
0
all of the above
42
What is the correct syntax for an if statement in C++?
if (condition) { }
if [condition] { }
if condition { }
if {condition}
43
What is the purpose of using arrays in programming?
To control the flow of execution in a program
To create graphical user interfaces for applications
To perform mathematical calculations and complex algorithms
To store and manipulate large amounts of data efficiently
44
Select the none logical operators in C++
!
&
||
&&
45
Why are network protocols important?
A) They help design websites
C) They increase internet speed
D) They are used only for wireless networks
B) They allow devices to communicate efficiently
46
Who Developed c++?
Guidovan Rossum
Bjarne Stroustrup
Vukihiro Matsumoto
Anders Hejlsberg
47
What is the keyword used to end a Select Case block?
b) End Case
a) End Select
c) Case End
d) Stop Case
48
Which Set implementation is the best choice when you need to maintain insertion order?
LinkedHashSet
TreeSet
EnumSet
HashSet
49
What is the main purpose of a Connector in Tomcat?
To create Java servlets
To connect to databases
To manage server security
To handle communications with the client
50
Which component of Tomcat is responsible for compiling JSP files into Java servlet code?
Jasper
Catalina
coyote
Engine
51
What does ARP stand for?
D) Address Registration Protocol
B) Automatic Routing Protocol
A) Address Resolution Protocol
C) Advanced Routing Protocol
52
What is the primary function of Catalina in Tomcat?
To compile JSP files
To manage database connections
To handle HTTP requests
To serve as Tomcat's servlet container
53
What is the primary benefit of IPv6 over IPv4?
Lower latency
Faster internet speeds
Larger address space
Reduced complexity in address allocation
54
What is a web container's main role in relation to Java servlets?
To manage the life cycle of servlets
To store website data
To create web pages
To compile Java code
55
What happens if no Case matches and there is no Case Else in a Select Case block?
c) The program skips the Select Case block
b) An error occurs
a) The program stops execution
d) The program exits the function
56
Which protocol is used for secure communication over a computer network?
D) SMTP
A) HTTP
C) HTTPS
B) FTP
57
Which class of IPv4 addresses is used for multicast?
Class D
Class A
Class B
Class C
58
The Set interface does not allow which of the following?
Iteration
Duplicate elements
Heterogeneous objects
Null elements
59
What does HTML stand for?
c) Hyper Tax Makes Lined)
a) Hyper Text Markup Language
d)None
b) Holistic Technical Method Library
60
Which of the following is the correct way to define a list item in an ordered list?
c) <listitem>
b) <item>
d) <olitem>
a) <li>
61
Which statement is used to skip the current iteration of a loop in Visual Basic 6.0?
c) Next
a) Exit Loop
b) Continue
d) GoTo
62
Which of the following is true about the Exit For statement?
b) It skips the current iteration and moves to the next
a) It ends the program
d) It restarts the loop from the beginning
c) It exits the loop immediately
63
Which of the following is NOT an advantage of static web pages?
Cheap to host
Easy to develop
Can connect with databases
Simple to create
64
Which method would you use to check if an ArrayList contains a specific element?
b) has()
c) contains()
d) exists()
a) containsElement()
65
Which method is used to check if a Set contains a specific element?
contains()
include()
find()
has()
66
Which of the following statements about arrays in Visual Basic is true?
Arrays are zero-indexed by default
Arrays are fixed in size and cannot be resized.
Arrays in Visual Basic can only store integers.
Arrays can store multiple data types in the same array.
67
Which method is used to check if an ArrayList is empty?
b) empty()
d) size() == 0
a) isEmpty()
c) hasElements()
68
What does HTTP stand for?
A) Hypertext Transmission Protocol
C) Hypertext Transfer Protocol
B) Hyper Transfer Text Protocol
D) High Transmission Text Protocol
69
The indexing of an array in C++ programming by default starts with?
1
Null Char
-1
0
70
What is the purpose of an if-else statement in C++?
To terminate a program
To choose between alternatives based on a condition
To perform repetitive tasks
To declare variables
71
_________3.) C++ is a programing language?•
True
True or false
Water falls
false
72
Which Tomcat component is responsible for listening to incoming connections on configured TCP ports?
Coyote
Jasper
Catalina
Engine
73
Which of the following is used to terminate/exit a switch case in C++?
break
continue
end
return
74
What does JSP stand for?
Java Server Protocol
Java Servlet Program
Java Server Pages
JavaScript Pages
75
What does a Context represent in Tomcat's architecture?
A database table
A web application
A network connection
A Java class
76
In HTML, which tag is used to create a bulleted list?
<dl>
<li>
<ul>
<ol>
77
What is the main advantage of using arrays in programming?
They automatically handle memory management.
They are always sorted.
They provide a way to store multiple values in a single variable.
They allow for dynamic resizing of the array.
78
Which tag is used to create a subheading?
all of the above
h3
h2
h1
79
What does the <ol> tag represent in HTML?
d) A list of links
b) An unordered list
a) An ordered list
c) A definition list
80
Which of the following statements is true about the switch-case statement?
It is less readable than multiple if-else statements.
B) It executes all cases until a break is encountered.
It is useful for menu-driven programs.8
A) It can only compare integers.
81
Which of the following tags is used to create a hyperlink?
b) <a>
a) <link>
82
Which of the following tags is used to create a heading in HTML?
c) <header>
d) <title>
a) <h1> to <h6>
b) <headings>
83
Which of the following is NOT an example of server-side programming technology?
EJB
JSP
Servlet
HTML
84
Which protocol is used to transfer files over the internet?
D) UDP
B) SMTP
C) TCP
A) FTP
85
Which of the following is not a method of the Set interface in Java?
indexOf()
remove()
add()
size()
86
Which of the following protocols is used to retrieve emails from a mail server?
B) POP3
C) HTTP
A) SMTP
D) FTP
87
In C, what happens if the 'default' case is missing in a switch statement?
it executes the default case by default
it generates a run time error
it has no effect
It causes a compilation error
88
Which of the following tags is used to create a hyperlink?
c)
d)
b) <a>
a) <link>
89
What does the remove(int index) method do in a LinkedList?
b) Removes the first occurrence of the specified element.
d) Removes the last element from the list.
a) Removes the element at the specified index.
c) Removes all elements from the list.
90
Object oriented programming
creates functions that are called "FUNCTIONS"
supposes there will be classes and objects
is not a good way to program
integrates imperative systems in structs
91
What is a key benefit of dynamic web pages?
They are always faster than static pages
They can show different content based on user requests
They are easier to develop than static pages
They don't require any server-side processing
92
Which of these methods is specific to the List interface and not available in the Set interface?
remove(Object o)
add()
contains(Object o)
get(int index)
93
Which protocol is used to send email messages?
C) HTTP
A) FTP
B) SMTP
D) IMAP
94
Which of the following protocols is responsible for packet switching?
B) IP
C) HTTP
A) TCP
D) FTP
95
What is the primary purpose of an IP address in a computer network?
To identify a device’s location in the network
To control network traffic
To assign a MAC address to a device
To encrypt data during transmission
96
Which of the following methods is used to add an element to a List?
c) insert()
d) put()
b) add()
a) addElement()
97
Which collection class allows duplicate elements?
b) TreeSet
d) LinkedHashSet
c) ArrayList
a) HashSet
98
Which method would you use to retrieve and remove the first element of a LinkedList?
d) getFirst()
b) removeFirst()
a) poll()
c) pop()
99
In C++ The switch-case is another?
Loop
Data type
conditional structure
Declaring
100
What is the syntax for an if-else statement in C++?
if condition {action1} else {action2};
if (condition) {action1} else {action2};
(if condition) {action1}; else {action2};
if {condition} (action1); else (action2);
101
In Tomcat, what does a Host represent?
A database connection
A physical server machine
A client computer
An association of a network name to the Tomcat server
102
Which of the following is true about if...else statements?
You can have nested if...else statements.
else is mandatory if you use an if block.
You can have multiple else blocks for a single if block.
You cannot use else if in C++.
103
Which type of memory is used by an Array in C++ programming language?
Not mentioned
Contiguous
None-contiguous
Both A and B
104
In C++, the increment and decrement operators are binary operators.
True
False
105
Which of the following is a valid IPv4 address?
192.168.1.1
192.168.300.1
192.168.0.256
192.168.-1.1
106
Pointers in C++ can be defined as:
A special variable which can store memory addresses
None of the given options
A generic data type
Data type used in functions
107
What is a key advantage of using Java servlets?
They create a thread for each request, improving performance
They are written in a scripting language
They create a new process for each request
They are easier to write than static HTML pages
108
Which of the following is true about the Set interface?
It ensures uniqueness of elements.
It allows multiple null elements.
It supports positional access of elements.
It is faster for accessing elements by index.
109
Which of these packages contains all the collection classes?
a) java.lang
d) java.awt
b) java.util
c) java.netd)
110
What are the different constructors in C++
character
parameterized
default
copy
111
What is the size of an IPv6 address?
32 bits
64 bits
128 bits
256 bits
112
Which is true about "cin" in C++?
"cin" never auto converts keyboard input into desired data type
Input is directed into a variable.
"cin" is always used for outputting information
C++ does not use "cin"
113
What is the purpose of a structure in C++ programming?
To represent complex data types
To declare functions
To create text files
To define arrays
114
What does IP stand for in computer networking?
Internet Provider
Internal Process
Internet Protocol
Integrated Package
115
The two dimensional (2D) array in C++ programming is also known as MATRIX.
True
False
116
What is array in C++ programming?
A data structure used to store data in sorted manner
A collection of data items of different datatype
A single variable that can hold multiple data items
A collection of data items of the same datatype
117
In Java's List interface, how are elements typically accessed?
Using the contains method
By keys
By their unique hash codes
Using indexes
118
Which of the following statements is false about the Set and List interfaces?
Set ensures uniqueness of elements, while List allows duplicates.
Both Set and List allow duplicate elements.
Both Set and List extend the Collection interface.
Set does not support indexing, while List does.
119
Which method would you use to retrieve an element from an ArrayList at a specific index?
b) fetch(index)
c) get(index)
a) getElement(index)
d) retrieve(index)
120
Object-oriented programming
Broccoli
GUI
Blockly
121
Which statement about network protocols is true?
D) They are not necessary for internet communication
B) They define how data is formatted and transmitted
C) They are only used for email communication
A) They only work on wired networks
122
What is the role of a Service component in Tomcat?
To create dynamic web pages
To tie Connectors to an Engine
To process client requests
To manage database connections
123
What is an array in Visual Basic?
A single variable that holds only one value
A method used for looping
collection of variables of the same data type stored at contiguous memory.
A collection of variables of different data types
124
Which protocol is used to access web pages on the internet?
B) HTTP
D) SSH
A) FTP
C) SMTP
125
What is role of constructor in c++
To call private functions from the outer world
To modify data whenever required
To destory an object
To initialize the data members of an object when it is created
126
What is the range of private IPv4 addresses for Class A?
192.168.0.0 to 192.168.255.255
172.16.0.0 to 172.31.255.255
224.0.0.0 to 239.255.255.255
10.0.0.0 to 10.255.255.255
127
What will happen if you try to access an array index that is out of bounds?
A runtime error will occur
The program will return -1
The program will ignore it
The program will create a new element at that index
128
Which protocol is used to send error messages in a network?
A) IP
D) ARP
C) ICMP
B) TCP
129
Which protocol provides an IP address to devices on a network?
C) FTP
D) HTTP
B) DNS
A) DHCP
130
Which of the following is the primary characteristic of a HashSet in Java?
It allows duplicate elements
It does not guarantee order of elements
It implements the List interface
It maintains elements in sorted order
131
What is an IPv6 multicast address used for?
To send data to a group of devices
To identify a specific device on a network
To send data to a single device
To send data to all devices in a network
132
In Java, which of the following interfaces guarantees the insertion order of elements?
HashSet
List
Set
SortedSet
133
How do you declare a one-dimensional array in Visual Basic?
Dim numbers(5) As Integer
Dim numbers = Integer(5)
Dim numbers{5} As Integer
Dim numbers As Integer[5]
134
In Tomcat's architecture, what does a Server represent?
A database server
The entire container
A network connection
A single web application
135
Object Oriented Programming
Objects and the data and actions associated with the objects.
Objects and the data and actions associated with the programs.
Java and the data and actions associated with the objects.
All Languages and the data and actions associated with the objects.
136
In the context of web applications, what is a servlet?
A Java class that extends server capabilities
A web design tool
A type of web server
A database management system
137
What is the default increment value for a For...Next loop in Visual Basic 6.0?
b) 1
a) 0
d) 2
c) -1
138
What is the purpose of the <h1> tag in HTML?
a) To create a footer
c) To create a paragrap
d) To insert an image
b) To define the main heading of a page
139
Which class implements the Set interface and maintains elements in ascending order?
LinkedHashSet
TreeSet
HashSet
EnumSet
140
Which of the following is a looping construct in Visual Basic 6.0?
c) While...Wend
b) Do...Loop
d) All of the above
a) For...Next
141
What does the remove(int index) method do in an ArrayList?
a) Removes the element at the specified index.
b) Removes all elements from the list.
d) Removes the last element from the list.
c) Removes the first occurrence of the specified element.
142
What does the clear() method do in an ArrayList?
b) Removes all elements from the list.
a) Clears the last element.
d) Clears the specified element.
c) Resets the list to its initial state.
143
Which of the following operations can List perform that Set cannot?
Adding duplicate elements
Adding elements
Checking if an element exists
Removing elements
144
What is the primary purpose of the Stack class in Java?
B) To implement a last-in, first-out (LIFO) data structure
D) To store elements in a first-in, first-out (FIFO) manner
A) To store elements in a sorted order
C) To allow random access to elements
145
Describe Object Oriented Programming.
Organisation in a way that reflects the real world.
The real world animals.
Real world intelligence modelling.
The real world people.
146
Which protocol is used to ensure reliable communication between applications?
A) UDP
B) TCP
C) FTP
D) ICMP
147
Which of the following statements best describes the difference between Set and List?
Both Set and List do not allow duplicates.
Set maintains insertion order, while List does not.
List allows duplicates, while Set does not.
Set allows duplicates, while List does not.
148
What is the default subnet mask for a Class C IPv4 address?
255.255.0.0
255.255.255.0
255.255.255.255
255.0.0.0
149
The `if` statement in C++ can be used without an accompanying `else` statement.
False
True
150
What is the maximum number of hosts in a Class C network?
512
1024
254
256
151
What does DNS stand for?
A) Domain Name Server
C) Domain Name System
B) Dynamic Name System
D) Digital Network Service
152
Functions can return structure in C++ ?
True
Can't say
False
May be
153
where is c++ programing used
Play games
creating a program
typing a document
(A)making a video
154
What does HTML stand for?
c) Hyper Tax Makes Line
b) Holistic Technical Method Library
a) Hyper Text Markup Language
d) None of the above
155
the Logical Operators && in C++ means ?
xor
and
or
not
156
Array is ______ in C++ Programming language.
Primitive Data type
Custom Data type
None of these
Derived Data type
157
Which of the following is a connectionless transport layer protocol?
D) ICMP
A) TCP
C) IP
B) UDP
158
Which of the following is the correct syntax for a Select Case structure in Visual Basic 6.0?
d) Choose
b) Switch
c) Select Case
a) Case Of
159
What is the purpose of the Select Case statement in Visual Basic 6.0?
c) To declare a variable
a) To handle multiple conditions without nested If statements
d) To exit a program
b) To repeat a block of code
160
What is a loop in programming?
A programming loop is a set of instructions that repeats.
An algorithm that includes every variable.
A sequence put in the correct order.
A code event that only happens once.
161
which tag is used to define a paragraph in HTML?
c) <paragraph>
b) <para>
d) <text>
a) <p>
162
Which address is used to broadcast to all hosts on a network?
192.168.1.1
127.0.0.1
0.0.0.0
255.255.255.255
163
What is the default behavior of the <p> tag in HTML?
c) It creates an inline element.
d) It does not display anything.
a) It creates a block-level element with no margin.
b) It creates a block-level element with a margin before and after.
164
What does the 'else' keyword in an if-else statement signify in C++?
The beginning of the program
Alternative set of statements to be executed if the 'if' condition is false
The end of the program
Another if condition
165
In the For...Next loop, what does the Step keyword do?
c) Exits the loop
b) Specifies the increment or decrement value
a) Specifies the number of iterations
d) None of the above

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