Wipro Technical Trainer Interview Questions and Answers

Q1. What is abstract class? Why we require abstract class?
Ans. 
Abstract class is a class that cannot be instantiated and may contain abstract methods. It is used for defining a common interface.
• Cannot be instantiated directly

• May contain abstract methods that must be implemented by subclasses

• Used for defining a common interface for a group of related classes
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Q2. What is the difference between abstract class and interfaces?
Ans. 
Abstract class can have both abstract and non-abstract methods, while interfaces can only have abstract methods.
• Abstract class can have constructors, member variables, and methods, while interfaces cannot.

• A class can implement multiple interfaces but can only inherit from one abstract class.

• Abstract classes are used to define a common base class for related classes, while interfaces are used to define a contract for cl...read more
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Q1. Some random technical concept to explain .
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Q2. How you introduce freshers to technology
Ans. 
I introduce freshers to technology by providing hands-on training, explaining concepts in simple terms, and encouraging experimentation.
• Provide hands-on training sessions to help them understand practical applications of technology

• Explain complex technical concepts in simple terms to make it easier for them to grasp

• Encourage experimentation and problem-solving to build their confidence and skills

• Use real-world examples...read more
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Q3. How to motivate yourself to teach
Ans. 
I motivate myself to teach by setting goals, staying passionate about the subject, seeking feedback, and celebrating small victories.
• Set clear and achievable goals for each teaching session

• Stay passionate about the subject matter to keep yourself engaged

• Seek feedback from students to understand areas of improvement

• Celebrate small victories and milestones to stay motivated
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Aptitude round consists Logical reasoning, General Aptitude, Grammar related questions etc. All are moderate level questions.

Q1. Explain OOPs w.r.t Java
Ans. 
OOPs is a programming paradigm that uses objects to represent real-world entities. Java is an OOPs language.
• OOPs stands for Object-Oriented Programming System

• Java is a class-based OOPs language

• Encapsulation, Inheritance, Polymorphism, and Abstraction are the four pillars of OOPs

• Objects have state and behavior

• Java supports interfaces, which allow for multiple inheritance

• Example: A car can be represented as an object wit...read more
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Q2. Explain about the projects that you have worked on
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Q3. Explain how Java solves machine dependency of code execution
Ans. 
Java solves machine dependency by using bytecode and virtual machine.
• Java code is compiled into bytecode which is platform-independent

• The bytecode is executed by the Java Virtual Machine (JVM) which is platform-specific

• JVM translates bytecode into machine code for the specific platform

• This allows Java code to run on any platform with a JVM installed

• Example: A Java program compiled on Windows can run on Linux or Mac as
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Q1. Why should we hire you?
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Q2. Tell me about yourself.
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Numerical ability and logical reasoning followed by some coding mcqs

Q1. Print 1 to 100 without for loop
Ans. 
Printing 1 to 100 without for loop
• Use recursion to print numbers from 1 to 99

• Print 100 outside the recursion

• Use a base case to stop recursion at 100
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Simple aptitude test

Q1. General questions as per your cv
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Attended the codevita competition in final year of college.

Q1. About College Project
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Q2. Some very basics of java
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Q3. Experience of college project as a team
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