Wipro Project Trainee Engineer Interview Questions and Answers

It is 3 section test. First section aptitude, english and logical reasoning. Second section is coding round. Third section is essay round. Cut off of every section is 70%.

Q1. Tell me something about yourself
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Q2. Tell me about your final year project
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Q3. What technology you use in this project
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Q4. What is your role in this project
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Q5. What is encapsulation
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Encapsulation is the process of hiding implementation details and exposing only necessary information.
• Encapsulation is a fundamental concept in object-oriented programming.

• It helps in achieving data abstraction and information hiding.

• It allows for better control over the data and prevents unauthorized access.

• Encapsulation is achieved through the use of access modifiers such as public, private, and protected.

• For example...read more
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Q6. What is function overloading
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Function overloading is the ability to have multiple functions with the same name but different parameters.
• Function overloading allows a function to perform different tasks based on the number and types of parameters passed to it.

• It helps in writing cleaner and more readable code.

• Example: void print(int x), void print(float x), void print(char x) are all overloaded functions with the same name but different parameter t...read more
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Q7. Difference between function overloading and function Overwriting
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Function overloading is having multiple functions with the same name but different parameters. Function overwriting is replacing a function with a new one.
• Function overloading is used to provide multiple ways to call a function with different parameters.

• Function overwriting is used to replace a function with a new implementation.

• Function overloading is resolved at compile-time based on the number and types of arguments...read more
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Q8. What is normalization
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Normalization is the process of organizing data in a database to reduce redundancy and dependency.
• Normalization helps in improving data consistency and accuracy

• It involves breaking down a table into smaller tables and defining relationships between them

• Normalization is achieved through a series of normal forms, such as first normal form (1NF), second normal form (2NF), and so on

• Normalization can prevent data anomalies,...read more
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Q9. What is ACID properties
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ACID properties are a set of properties that ensure database transactions are processed reliably.
• ACID stands for Atomicity, Consistency, Isolation, and Durability

• Atomicity ensures that a transaction is treated as a single, indivisible unit of work

• Consistency ensures that a transaction brings the database from one valid state to another

• Isolation ensures that concurrent transactions do not interfere with each other

• Durabi...read more
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Q10. Define DDL, DCL, DML
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DDL, DCL, and DML are three types of SQL commands used to manipulate databases.
• DDL (Data Definition Language) is used to define the structure of the database schema, such as creating tables, altering tables, and dropping tables.

• DCL (Data Control Language) is used to control access to the database, such as granting or revoking permissions.

• DML (Data Manipulation Language) is used to manipulate data within the database, s...read more
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