Wipro Interview Questions and Answers That You Should Know

Most of the companies are looking for people with more work experience. So they are making the interview as tough as possible. In order to make it easy and for better understanding, tutorial on Wipro Interview Questions and Answers will guide you through the process. These Wipro Interview Questions and Answers will help you make the interview as easy as possible.

Now, walk through the Wipro Interview Questions and Answers. These top 50 Wipro Interview Questions and Answers will help you crack the interview. You will begin with the Beginner level Wipro Interview Questions and Answers in this tutorial.

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1. Why Wipro?

If a question asked like this, comes up with an answer such as Wipro is India's top IT company. It provides a great environment to work for. Here, your qualities will be valued. The organization has worked in a range of fields and countries. Once you are inside, you'll have various options based on your professional skills. Wipro also provides a good team to work with, and work-life balance is excellent at Wipro.

2. Mention the difference between StringBuilder and StringBuffer in Java?

StringBuilder was developed as a drop-in replacement for the StringBuffer. It is not synchronized, it is not thread-safe, so you can only use it where a single thread uses the StringBuffer, which is faster in most cases. StringBuffer was developed before the StringBuilder. StringBuffer is synchronized so that the programs that use it take more memory and time to run the programs.

3. Why do you choose to work with Wipro?

I want to work at Wipro for a great record of innovation and success. Whenever I think of the technology that has changed from the 1940s to the present, I know ‌Wipro would not have been able to thrive unless it embraced the change, and ever since I have been impressed with Wipro, which has been in business since 1940.

4. State the functionalities of an operating system?

The functionalities of an operating system are: 

1. An operating system provides a user interface, graphical user interface, and command line
2. An operating system also includes functionality for booting the computer
3. It also performs some operations for managing the peripheral devices

5. What do you understand about Java virtual machines?

JVM is a virtual machine that enables the computer to run the programs. JVM acts like a run-time engine that calls the main method present in Java. Java Virtual Machine is the specification that must be implemented in the computer system.

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6. List some features of JavaScript

The features of javascript are:

• Open-Source
• Lightweight
• Interpreted programming language
• Complementary to Java
• Complementary to HTML
• Cross-platform

7. What is the use of window objects?

The window object is not an object of JavaScript it is a browser object created automatically by the browser that represents a window of a browser. The window object is used to display the pop-up dialog box.

8. What is C#?

C# is a simple and general-purpose programming language that Microsoft developed. It is a managed and safe language that is totally compiled by .NET framework to generate Microsoft intermediate language.

9. State the differences between public, static and void?

The difference between public, static, and void are:

• You can access public declared variables anywhere
• Static variables declared are globally accessible without creating any instance for the class
• Void is a type modifier that specifies the method that doesn't return any value

10. What is SQL?

SQL stands for the Structured Query Language. It is used to maintain the relational database and perform many data manipulation operations on the data.

11. What is a class?

The class is a user-defined data type that contains the data members and member functions whose access can be defined by the three modifiers private, public, and protected

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12. What is Polymorphism?

Polymorphism means having more than one function with the same name but with different functionalities

Polymorphism is divided into two categories:

• Static Polymorphism
• Dynamic Polymorphism

13. What is Abstraction?

Abstraction is a technique of showing essential details without representing the implementation. If the members are defined with a keyword public, then the members are accessible outside as well. If the members are defined with a keyword private, then the members are not accessible by the outside methods.

14. What is Data binding?

Data binding is a process of binding the application's UI and business logic. If any changes made in the business logic will reflect directly to the application UI

15. What is an Object?

Object is an instance of a class so that you can create an object from a class. The objects are declared with the same sort of declaration that you declare variables of basic types.

Now, understand the Intermediate level Wipro Interview Questions and Answers in the article.

16. What is a Destructor?

Destructor is used to delete any extra resources allocated by the object. A destructor function is called automatically once the object goes out of the scope.

17. What are Checkpoints in DBMS?

The Checkpoint is a mechanism where all the previous logs are removed from the system and permanently stored in the storage disk; these are checkpoints in DBMS.

18. What is Normalization?

Normalization is a process of analyzing the given relation schemas according to their functional dependencies. It is also used to minimize redundancy and also to minimize insertion, deletion, and update distractions.

19. What is a Stack?

Stack is an ordered list in which can perform insertion and deletion only at one end called the top. It is a recursive data structure having a pointer to its top element. Sometimes stack is also called as Last-In-First-Out (LIFO) list, the element inserted first in the stack will be deleted last from the stack.

20. What do you mean by static variable?

The static variable refers to the common property of all the objects like the name of the company name of employees, college name of students, etc. The static variable gets memory only once in the class area at the time of class loading.

21. What is Inheritance?

Inheritance is a mechanism in which one object has all the properties and behavior of another object of another class. Inheritance is used for Code Reusability and Method Overriding. The idea behind the inheritance in Java is that you can create a new class that are built upon existing classes.

22. What is method overloading?

Method overloading is a polymorphism technique that allows us to create multiple methods with the same name but different parameters

23. Can you override the private methods?

It is not possible to override the private methods, the scope of private methods is limited to the class, so that you cannot access them outside of the class.

24. What is the use of DCL Language?

DCL allows users to control access and permission management to the database. It is a subset of the database, which decides which user at what point in time should access what part of the database, it includes two commands called GRANT and REVOKE

25. What is a Primary key?

A primary key is a field or the combination of fields that is uniquely used to identify each record in the table. The primary key is a special kind of unique key. If any column contains a primary key, it can not be null or empty. A table can have duplicate columns, but it cannot have more than one primary key.

26. What is an Inconsistent dependency?

An inconsistent dependency refers to the difficulty of getting relevant data because of the missing or broken path to the data.

27. What is Tree data structure?

Tree is a recursive data structure containing a set of one or more data nodes where one node is called the root of the tree while the remaining nodes are called the children of the root.

28. What does success mean to you?

From my point of view, I define success as fulfilling my role in my team and the company. I trust that my employer has placed me in a position where I can achieve the goals of the company and my team, and so I work toward completing my duties as effectively as possible.

29. What is Tree Traversal?

Tree traversal is the process of visiting all the nodes of a tree. All the nodes are connected via edges (links) where you always start from the head node.

There are three ways which we use to traverse a tree:

• In-order Traversal
• Pre-order Traversal
• Post-order Traversal

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30. How does depth-first traversal work?

Depth First Search algorithm traverses a graph in a depthward motion and uses a stack to get the next vertex and to start a search when a dead end occurs in any iteration.

31. What is the selection sort?

Selection sort is a sorting technique that divides the data set into two sub-lists known as assorted and unsorted. Then it selects the minimum element from the unsorted sub-list and places it into the sorted list. This iterates unless all the elements from the unsorted sub-list are consumed into a sorted sub-list.

32. What are the advantages of selection sort?

Advantages of selection sort are:

• Selection sort is very simple and easy to implement
• Selection sort can be used for small data sets
• Selection sort is more efficient than bubble sort

33. What is an Attribute?

 An attribute refers to a database component. It can be defined as the characteristics of the entity and can be uniquely identified using the attributes. Attributes are used to represent the instances in the row of the database.

34. What is meant by Synchronization?

Synchronization is the capability to control access of multiple threads to the shared resources. Synchronized keyword in Java provides locking that ensures mutual exclusive access of shared resources and prevents data race.

35. List some applications of Tree-data structure?

The applications of the tree data structure are:

• Symbol Table construction
• The manipulation of Arithmetic expression
• Hierarchal data model
• Syntax analysis

36. Which are the data structures used in BFS and DFS algorithms?

The data structures used in BFS and DFS algorithms are :

• Queue Data Structured
• Stack Data Structured

37. Can we overload the main() method?

 Yes, it is possible to have any number of main methods in a Java program by using method overloading. Now, look at the Advanced level Wipro Interview Questions and Answers in this tutorial.

38. What is Search Operation?

Whenever an element is to be searched, start searching from the root node. Then, if the data is less than the key value, search for the element in the left subtree. Or in simple terms, you can say that searching for the element in the right subtree.

39. What is linear data structure?

A Linear data structure has data elements arranged in a sequential manner, and each member element is connected to the previous and the next element. Such data structures are very easy to implement as computer memory is also sequential.

Examples:- List, Queue, Stack, Array, etc.

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40. Write a program to check palindromes?

#include <stdio.h>

int main() {

  int n, number, reversed = 0, remainder;

printf("Enter an integer: ");

scanf("%d", &n);

number = n;

while (n != 0) {

     remainder = n % 10;

     reversed = reversed * 10 + remainder;

     n /= 10;

}

if (number == reversed)

     printf("%d is a palindrome.", number);

else

     printf("%d is not a palindrome.", number);

return 0;

}

41. How to Split String in Java?

public class Simpli {

  public static void main(String args[])

  {

  String str = "Simplilearn";

  String[] arrOfStr = str.split("e", 2);

  for (String a : arrOfStr)

  System.out.println(a);

  }

}

42. What is object cloning?

Object cloning is used to create the exact copy of an object. Java.lang. The cloneable interface must be implemented by the use of a class whose object clone we want to create.

43. List a few advantages of DBMS?

There are a lot of advantages of DBMS; some of them are:

• Provides multiple user interfaces
• Redundancy control
• Ensure data consistency
• Restriction for unauthorized access
• Easy accessibility
• Provides backup and recovery
• Enforces integrity constraints

44. State the purpose of a default constructor in Java?

The use of the default constructor is to assign the default values to the objects. The Java compiler creates a default constructor and implicitly if there is no constructor present in the class.

45. What are functions in Python?

Functions are blocks of code that are executed only when the function is called. To define a function in Python, the def keyword is used.

46. Write a program to check if the number is prime or not?

#include<stdio.h>  

int main(){    

int a,b,i=0,flag=0;    

printf("Enter the number to check prime:");    

scanf("%d",&b);    

a=b/2;    

for(i=2;i<=b;i++)    

{    

if(b%i==0)    

{    

printf("Number is not prime");    

flag=1;    

break;    

}    

}    

if(flag==0)    

printf("Number is prime");     

return 0;  

 }    

47. Explain about docstring in Python?

docstring is a string literal that occurs as the first statement in a function, class, module, or method definition. docString also provides a better way to associate the documentation.

48. Mention SQL comments?

SQL comments are divided into two types they are: 

1. Single-Line Comments
2. Multi-line Comments

49. State the uses of the super keyword?

The uses of the super keyword are :

1. Super keyword is used to invoke the immediate parent class method
2. It is also used to refer to the immediate parent class instance variable
3. It can also be used to invoke immediate parent class constructor

50. What is the main objective of garbage collection?

The main objective of garbage collection is to free the memory space that is occupied by the unnecessary and unreachable objects during the program execution by deleting those unreachable objects.

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Conclusion

These are the top Wipro Interview questions and answers that would give you an idea of what questions they could ask in the Wipro interview, for which you can prepare ahead.

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