InfyTQ Java MCQ Questions 2023

Infosys has announced Infosys Certification Exam for the graduates of 2023. The Infosys Certification exam is being conducted through InfyTQ platform, in which there will be a dedicated section for Java MCQ Questions, wherein you will be asked questions based on java and its implementations.

InfyTQ Java MCQ Round

InfyTQ Java Ques Certification Round Question Type
JAVA 10 Ques MCQ

Section

2

Time Duration

3 hours(shared)

Type

Non-Adaptive

Negative marking

No

InfyTQ Java Test Pattern

InfyTQ Java Test Pattern | Infosys Certification Test

Below are all the topics from which you will get questions in the Infosys Certification Test, make sure you are practicing all the topics, in order to clear this section.

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Preparation Section

Click on Topic below to solve InfyTQ Java MCQ Questions

Introduction to Programming
0%
Start
OOP Concepts
0%
Start
Arrays and String
0%
Start
Polymorphism
0%
Start
Abstract, final and Interfaces
0%
Start
Recursion
0%
Start

1. Which class acts as a root for all java classes?

String

String

14.83%

Object

Object

71.41%

Throwable

Throwable

6.49%

None of the above

None of the above

7.27%

For all java classes the most commonly required functionality is defined inside object class hence object class act as a root for all java classes.

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2. Using the concept of encapsulation security of the data is---------------

Ensured to some extent

Ensured to some extent

44.97%

Purely ensured

Purely ensured

52.12%

Not ensure

Not ensure

1.55%

Very low

Very low

1.35%

The concept of encapsulation can only ensure data security to some extent.

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3. ______is implemented as Combination of methods and attributes into a class

Encapsulation

Encapsulation

48.77%

Inheritance

Inheritance

19.4%

Polymorphism

Polymorphism

14.58%

Abstraction

Abstraction

17.26%

Encapsulation is implemented by combining methods and attributes into a class. The class acts like a container of encapsulating properties

Good Job! Did you know? : With $8.5 billion in their kitty, Wipro is the 4th largest Indian IT company in terms of revenue.

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4. Predict the output

  public class Plant{

  private String name;

  public Plant(String name){ this.name=name;}

  public String getName(){return name;}

}

public class Tree extends Plant{

  public void growFruit(){}

  public void dropLeaves(){}

}

Which statement is true?

The code will compile without changes

The code will compile without changes

38.74%

The code will compile if public Tree() { Plant();} is added to the Tree class.

The code will compile if public Tree() { Plant();} is added to the Tree class.

24.59%

The code will compile if public Plant(){ Tree();} is added to the Plant class.

The code will compile if public Plant(){ Tree();} is added to the Plant class.

18.68%

The code will compile if public Plant(){ this("fern");} is added to the Plant class.

The code will compile if public Plant(){ this("fern");} is added to the Plant class.

17.99%

By default the child class constructor calls the zero argument constructor of the parent class.Therefore, we need to insert zero argument constructor inside parent class Plant.Also we can call only the same class or it’s parent class constructor but we can’t call child class constructor from parent.

Good Job! Did you know? : With $8.5 billion in their kitty, Wipro is the 4th largest Indian IT company in terms of revenue.

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5. \z is used for _____ in regular expression in Java:

Matches end of the string using regular expression

Matches end of the string using regular expression

44.73%

Remove a part of string

Remove a part of string

10.95%

Put a tab space

Put a tab space

11.22%

There is no expression of this name.

There is no expression of this name.

33.11%

\z is used to match end of the entire string in regular expression in java

Good Job! Did you know? : With $8.5 billion in their kitty, Wipro is the 4th largest Indian IT company in terms of revenue.

Oops!

6. Which of the following is not a kind of exception that is thrown by the JDBC method?

DataRounding

DataRounding

46.47%

SQL Exception

SQL Exception

18.56%

DataTruncation

DataTruncation

15.97%

SQL Warning

SQL Warning

18.99%

Data Rounding is not a kind of exception that is thrown by JDBc method

Good Job! Did you know? : With $8.5 billion in their kitty, Wipro is the 4th largest Indian IT company in terms of revenue.

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7. What are the major components of the JDBC?

DriverManager, Statement, and ResultSet

DriverManager, Statement, and ResultSet

8.6%

DriverManager, Connection, Statement, and ResultSet

DriverManager, Connection, Statement, and ResultSet

25.48%

DriverManager, Driver, Connection, and Statement

DriverManager, Driver, Connection, and Statement

15.76%

DriverManager, Driver, Connection, Statement, and ResultSet

DriverManager, Driver, Connection, Statement, and ResultSet

50.16%

DriverManager, Driver, Connection, Statement, and ResultSet

Good Job! Did you know? : With $8.5 billion in their kitty, Wipro is the 4th largest Indian IT company in terms of revenue.

Oops!

8. Vikas created an interface to use it in different parts of the program by implementing it.But he forgot to specify the access specifier for each contained method. What will be the access specifier of the methods that will be inherited/implemented?

Public

Public

71.29%

Private

Private

13.23%

Protected

Protected

8.23%

No modifier

No modifier

7.26%

Public is the correct answer

Good Job! Did you know? : With $8.5 billion in their kitty, Wipro is the 4th largest Indian IT company in terms of revenue.

Oops!

9. In which of the following type of Base64 encoding, Output is mapped to a set of characters lying in A-Za-z0-9+/?

Simple

Simple

30.26%

URL

URL

28.17%

MIME

MIME

28.17%

None of the mentioned

None of the mentioned

13.39%

Output is mapped to a set of characters lying in A-Za-z0-9+/.

Good Job! Did you know? : With $8.5 billion in their kitty, Wipro is the 4th largest Indian IT company in terms of revenue.

Oops!

10. How many objects can be referenced from the same variables?

One at a time

One at a time

60.37%

Many at a time

Many at a time

26.32%

Many using array name

Many using array name

12.69%

7 at max at same time

7 at max at same time

0.62%

There should not be any confusion in how many references can be made from a single variable. A single variable can only point to one object at a time. Even if it’s an array, the name of the array is used and is considered one object name only (representing first array element).

Good Job! Did you know? : With $8.5 billion in their kitty, Wipro is the 4th largest Indian IT company in terms of revenue.

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Topic wise analytics for InfyTQ

Stats about this section

Number of Question 100%
Difficulty 80%
Importance 90%

Topic Wise Analysis

Introduction to Programming

Questions 0-2`

Difficulty 50%

Importance 60%

Control Structures

Questions 0-2

Difficulty 50%

Importance 60%

OOP Basics

Questions 0-2

Difficulty 60%

Importance 60%

Memory management

Questions 0-1

Difficulty 80%

Importance 90%

OOPS Concepts

Questions 1-3

Difficulty 80%

Importance 80%

Arrays and String

Questions 2-4

Difficulty 90%

Importance 90%

Debugging and Code Analysis

Questions 0-2

Difficulty 90%

Importance 80%

Static

Questions 0-1

Difficulty 60%

Importance 60%

Relationships

Questions 0-1

Difficulty 50%

Importance 30%

Polymorphism

Questions 0-2

Difficulty 50%

Importance 60%

Object and Wrapper classes

Questions 0-2

Difficulty 60%

Importance 80%

Abstract, final and Interfaces

Questions 0-2

Difficulty 80%

Importance 80%

Unit testing

Questions 0-1

Difficulty 60%

Importance 70%

Recursion

Questions 1-3

Difficulty 80%

Importance 90%

Regular exception

Questions 0-2

Difficulty 70%

Importance 80%

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FAQ's

There are a total of 2 rounds in this test

  • Certification Round
  • Advantage Round

Yes, in the first round of Infosys Certification challenge you will be getting questions on both Java/Python and DBMS combined.

The total time allotted for this section is 3 hours, both for mcq's and coding combined

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November 2, 2023

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