AppInventiv Technologies Node JS Developer Interview Questions and Answers

Question related to operating system and computer network

Q1. Traverse all child nodes in tree
Ans. 
Traverse all child nodes in a tree data structure
• Use depth-first or breadth-first traversal algorithms

• Recursively visit each child node starting from the root node

• Consider using a stack or queue data structure for traversal

• Example: Traverse all nodes in a binary tree
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Q1. Question related to cloud and oops
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Q1. Question related to my background and how web site work
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Q1. Java springboot basic to intermediate question
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Q2. Java stream questions
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Q1. Easy level DSA questions
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Q2. Project based questions
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Q1. String based questions in java
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Q2. What are the fundamental concepts of Java?
Ans. 
Fundamental concepts of Java include OOP, platform independence, memory management, and exception handling.
• Object-oriented programming (OOP) - Java is based on classes and objects, allowing for encapsulation, inheritance, and polymorphism.

• Platform independence - Java code can run on any platform with the help of JVM (Java Virtual Machine).

• Memory management - Java has automatic garbage collection to manage memory effici...read more
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Java based questions and few DSA questions

1st round is aptitude and pesudocode

Q1. Mostly python questions
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Q2. List questions and basic to mediumprogram
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Q1. Questions were completely based on data structures and algorithm
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Q2. SQL based questions were also asked
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Basic aptitude test with technical and non technical question

Q1. What is event loop
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Q1. What is Common Term Expression?
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Q2. What is Overloading and Overriding?
Ans. 
Overloading is having multiple methods in the same class with the same name but different parameters. Overriding is implementing a method in a subclass that is already defined in the parent class.
• Overloading allows a class to have multiple methods with the same name but different parameters.

• Overriding is when a subclass provides a specific implementation of a method that is already defined in its parent class.

• Example o...read more
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Q3. Examples of Server side session Management? Types of Session State?
Ans. 
Server side session management involves storing user data on the server to maintain state. Types include in-process, out-of-process, and database.
• In-process session state: Data stored in memory on the same server as the application.

• Out-of-process session state: Data stored in a separate server or service, such as a state server or Redis cache.

• Database session state: Data stored in a database, such as SQL Server or MySQ...read more
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Q4. How to Debug Stored Procedures?
Ans. 
Debugging stored procedures involves using tools like SQL Server Management Studio, setting breakpoints, and analyzing query execution.
• Use SQL Server Management Studio to debug stored procedures

• Set breakpoints in the stored procedure code to pause execution at specific points

• Analyze query execution using tools like SQL Profiler to identify issues

• Use PRINT or SELECT statements to output intermediate results for debuggin...read more
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Q5. What is Compile time binding and Runtime Binding?
Ans. 
Compile time binding occurs during compilation while runtime binding occurs during execution.
• Compile time binding is also known as early binding, where the method to be called is determined at compile time based on the type of the object.

• Runtime binding is also known as late binding, where the method to be called is determined at runtime based on the actual type of the object.

• Compile time binding is faster as it is don...read more
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Q1. Something based on hashet
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Q2. Same with this too
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Basic questions were given..bar graphs,pie charts