Wipro Project Engineer Interview Questions, Process, and Tips

It had a 2 programs with easy and medium level of coding programs, please go through the recent interview problems asked in wipro

Q1. What is Object oriented programming
Ans. 
Object oriented programming is a programming paradigm based on the concept of objects, which can contain data and code.
• OOP focuses on creating objects that interact with each other to solve problems

• Encapsulation, inheritance, and polymorphism are key principles of OOP

• Examples of OOP languages include Java, C++, and Python
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Q2. What is multi threading
Ans. 
Multi threading is a programming concept where multiple threads within a process execute independently to improve performance.
• Allows for concurrent execution of tasks within a single process

• Improves performance by utilizing multiple CPU cores

• Requires careful synchronization to avoid race conditions

• Examples include web servers handling multiple requests simultaneously
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Q3. Why is java not 100% oop
Ans. 
Java is not 100% OOP because it supports primitive data types and static methods.
• Java has primitive data types like int, double, etc. which are not objects.

• Java allows static methods which do not require an instance of a class to be called.

• Java also has the concept of wrapper classes to convert primitive data types to objects.
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Q4. What are collections in java
Ans. 
Collections in Java are classes and interfaces that provide a way to store and manipulate groups of objects.
• Collections provide dynamic data structures like List, Set, and Map.

• They offer methods to add, remove, and manipulate elements in the collection.

• Examples include ArrayList, LinkedList, HashSet, and HashMap.
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Q5. Internal working of hash map
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A hash map is a data structure that stores key-value pairs and uses a hash function to map keys to their corresponding values.
• Hash map uses a hash function to determine the index of the key-value pair in the underlying array.

• Collision resolution techniques like chaining or open addressing are used to handle situations where multiple keys hash to the same index.

• Hash maps typically have O(1) average time complexity for i...read more
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Q1. What is the purpose of the test.startTest() and test.stopTest() methods in programming?
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Good and tricky questions

Q1. Explain oops concepts in java with real time examples?
Ans. 
OOPs concepts in Java are fundamental principles of object-oriented programming, including inheritance, encapsulation, polymorphism, and abstraction.
• Inheritance: Allows a class to inherit properties and behavior from another class. Example: Car class inheriting from Vehicle class.

• Encapsulation: Bundling data and methods that operate on the data into a single unit. Example: Using private variables and public methods in ...read more
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Q2. What java is platform indepenedent?
Ans. 
Java is platform independent because of its 'write once, run anywhere' principle.
• Java programs are compiled into bytecode which can run on any Java Virtual Machine (JVM) regardless of the underlying platform.

• This allows Java programs to be executed on different operating systems without any modifications.

• Examples of platform independent Java applications include web applications, mobile apps, and enterprise software.
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Q3. Difference between abtract and interface key words?
Ans. 
Abstract classes can have both abstract and non-abstract methods, while interfaces can only have abstract methods.
• Abstract classes can have constructors, fields, and non-abstract methods, while interfaces cannot.

• A class can only extend one abstract class, but it can implement multiple interfaces.

• Abstract classes are used to define common characteristics of subclasses, while interfaces are used to define contracts for c...read more
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Q1. Why do you think you fit for this role in this company?
Ans. 
I have a strong background in project management and engineering, with a proven track record of successfully leading and completing projects.
• Extensive experience in project management and engineering

• Proven track record of successfully leading and completing projects

• Strong problem-solving and analytical skills

• Excellent communication and teamwork abilities
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Q2. What is your dream role for any company?
Ans. 
My dream role for any company is to lead a team of innovative engineers in developing cutting-edge technology that positively impacts society.
• Leading a team of engineers in developing innovative solutions

• Working on projects that have a positive impact on society

• Collaborating with cross-functional teams to achieve goals

• Continuous learning and growth opportunities

• Contributing to the company's success and growth
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Q1. What is Active directory
Ans. 
Active Directory is a directory service developed by Microsoft for Windows domain networks.
• Centralized database for managing network resources

• Stores information about users, computers, and other network objects

• Allows for authentication and authorization of users

• Enables single sign-on for users across multiple applications

• Supports group policies for managing security and access control
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Q2. What us office 365
Ans. 
Office 365 is a cloud-based subscription service offered by Microsoft that includes access to various productivity tools and applications.
• Includes applications like Word, Excel, PowerPoint, Outlook, and OneNote

• Provides cloud storage through OneDrive

• Offers collaboration tools like Teams and SharePoint

• Allows access to the latest versions of the software

• Subscription-based service with different plans available
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