IVTL Infoview Technologies Engineer Trainee Interview Questions and Answers

There will be 3 coding questions. They are of medium and hard level.

Q1. Sort array consisting 0's 1's and 2's without inbuilt functions
Ans. 
Sort an array of 0's, 1's, and 2's without using inbuilt functions.
• Use three pointers to keep track of the last index of 0's, 1's, and 2's

• Iterate through the array and swap elements based on their value

• Continue until all elements are sorted
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Q1. Os cn related questions
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Q1. Java questions and general hr questions
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Q1. Difference between Asp.net and Ado.net? Explain about Ado.net complete briefly?
Ans. 
ASP.NET is a web development framework while ADO.NET is a data access technology for connecting to databases.
• ASP.NET is used for building web applications, while ADO.NET is used for accessing and manipulating data from databases.

• ASP.NET provides a framework for creating dynamic web pages, handling user input, and managing state, while ADO.NET provides a set of classes for interacting with databases.

• ASP.NET includes fea...read more
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Q2. Difference between Functions and stored procedure?
Ans. 
Functions return a value while stored procedures do not.
• Functions are used to perform a specific task and return a value to the caller.

• Stored procedures are used to execute a set of SQL statements and do not return a value.

• Functions can be used in SQL statements while stored procedures cannot.

• Functions can be called from within stored procedures.

• Functions are deterministic while stored procedures may not be.

• Functions c...read more
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Q3. Interface Inheritance Difference between overloading and overriding
Ans. 
Interface is a contract that defines the methods a class must implement. Inheritance is the ability of a class to inherit properties and methods from another class.
• Interface is used to achieve abstraction and multiple inheritance in Java.

• Inheritance allows code reuse and promotes code organization.

• Overloading is having multiple methods with the same name but different parameters.

• Overriding is providing a different impl...read more
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Q2. And python programming questions
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Topics:
Python, Django, MySQL, Automation, Technical questions

Q1. Topics: Python, Django, MySQL, Automation, Technical questions
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Q2. Explain Django Architecture
Ans. 
Django follows Model-View-Controller (MVC) architectural pattern.
• Django has a high-level architecture that follows the Model-View-Controller (MVC) architectural pattern.

• The Model layer represents the database schema and business logic.

• The View layer is responsible for rendering the templates and presenting the data to the user.

• The Controller layer handles the user's input and interacts with the Model and View layers.

• Dj...read more
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Q3. Difference between XML and JSON
Ans. 
XML is a markup language while JSON is a lightweight data interchange format.
• XML uses tags to define elements while JSON uses key-value pairs.

• XML is more verbose and complex than JSON.

• JSON is easier to read and parse than XML.

• XML supports namespaces and validation while JSON does not.

• XML is widely used in web services and document exchange while JSON is preferred for data exchange between applications.
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Online test to check our mathematical ability and logical reasoning

Q1. Online test and also one to one from lead engineers
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Q1. Salary and travelling related details if finalized
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Q1. Face to face virtual interview from manager
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Q1. What is Java?
Ans. 
Java is a versatile, object-oriented programming language designed for portability across platforms.
• Object-Oriented: Supports concepts like inheritance, encapsulation, and polymorphism.

• Platform-Independent: Write once, run anywhere (WORA) due to Java Virtual Machine (JVM).

• Rich API: Offers a wide range of libraries for tasks like networking, I/O, and GUI development.

• Strongly Typed: Enforces strict type checking at compi...read more
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Q2. What are the methods to effectively use threads in programming?
Ans. 
Effective thread usage enhances performance and responsiveness in applications by enabling concurrent execution of tasks.
• Use thread pools to manage a fixed number of threads, reducing overhead. Example: Java's ExecutorService.

• Implement synchronization mechanisms (like mutexes) to prevent race conditions. Example: using 'synchronized' keyword in Java.

• Utilize concurrent data structures (like ConcurrentHashMap) to avoid l...read more
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