AppInventiv Technologies Blockchain Developer Interview Questions and Answers

Hacker rank mcq medium to hard level 1 hr duration

Q1. Oops , diff composition and inheritance
Add your answer
Q2. Design pattern explain singleton , abstract factory
Ans. 
Singleton ensures a class has only one instance, while Abstract Factory provides an interface for creating families of related objects.
• Singleton pattern restricts the instantiation of a class to one object, ensuring there is only one instance of the class.

• Abstract Factory pattern provides an interface to create families of related or dependent objects without specifying their concrete classes.

• Singleton pattern can be i...read more
Answered by AI
Add your answer
Q3. Implement linked list , all combination string in python
Ans. 
Implement linked list and generate all combination strings in Python.
• Create a Node class to represent each element in the linked list.

• Implement methods to add nodes, delete nodes, and generate all combinations of strings.

• Use recursion to generate all combinations of strings.
Answered by AI
Add your answer

Q1. Introduction about my skills and projects
Add your answer
Q2. Situation based question on my projects , talk about security and performance in my projects
Add your answer

Q1. Introduction about me and my family members
Add your answer
Q2. Relocation comfortable , about my friends who are placed , why many people from my college
Add your answer

Q1. Questions were completely based on data structures and algorithm
Add your answer
Q2. SQL based questions were also asked
Add your answer

Q1. What is Common Term Expression?
Add your answer
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
Answered by AI
Add your answer
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
Answered by AI
Add your answer
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
Answered by AI
Add your answer
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
Answered by AI
Add your answer