FE fundinfo Senior Software Developer Interview Questions and Answers

Q1. First round was hackerrank . with two questions medium level. second round - One leetcode style medium question third round - leetcode medium question fourth round - design LRU cache implementation Fifth r...read more
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Q2. Round 3 : Trapping rain water Design round : LLD design parking lot with all classes and interface
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Q1. Related to thread
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Q2. Graph - dfs, bfs
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Q1. Python Basic questions
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Q2. Diffrence Between tuple and list
Ans. 
Tuple is immutable and fixed in size, while list is mutable and can change in size.
• Tuple is defined using parentheses, while list is defined using square brackets.

• Tuple elements can be accessed using index, while list elements can be modified using index.

• Tuple is faster than list for iteration and accessing elements.

• Example: tuple = (1, 2, 3), list = [1, 2, 3]
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Q1. Python Basic with some puzzles
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Project based schenario development

Q1. Java 8 interview questions Spring boot Microservices GIT and Maven REST
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Q1. Experience Journey CTC discussion
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Q1. What is dependancy Injection?
Ans. 
Dependency Injection is a design pattern where the dependencies of a class are provided from the outside rather than created within the class itself.
• Allows for easier testing by providing mock dependencies

• Promotes loose coupling between classes

• Improves code reusability and maintainability

• Commonly implemented using frameworks like Spring in Java
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Q2. How We maintain security in Application?
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Maintaining security in applications involves implementing encryption, authentication, authorization, and regular security audits.
• Implement encryption to protect data in transit and at rest

• Use strong authentication mechanisms like multi-factor authentication

• Implement proper authorization controls to restrict access to sensitive data

• Regularly conduct security audits and penetration testing to identify vulnerabilities
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Q1. What are the different design patterns used in C#?
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Q2. What are the SOLID principles in software development?
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Q3. What is the MVVM pattern in WPF (Windows Presentation Foundation)?
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Q4. Write a code in C# for implementing the Singleton design pattern.
Ans. 
The Singleton pattern ensures a class has only one instance and provides a global point of access to it.
• 1. A Singleton class has a private constructor to prevent instantiation from outside.

• 2. It holds a static reference to its own instance.

• 3. It provides a public static method to access the instance.

• 4. Thread safety can be achieved using locking mechanisms or lazy initialization.
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Q5. What is the difference between an abstract class and an interface?
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Abstract classes can have implementations; interfaces cannot. Both define contracts for derived classes.
• Abstract classes can contain both abstract methods (without implementation) and concrete methods (with implementation).

• Interfaces can only contain method signatures (abstract methods) and properties, with no implementation.

• A class can inherit from only one abstract class (single inheritance), but it can implement mul...read more
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Q6. What is the difference between .NET Framework and .NET Core?
Ans. 
The .NET Framework is Windows-only, while .NET Core is cross-platform and modular, designed for modern app development.
• .NET Framework is primarily for Windows applications, whereas .NET Core supports Windows, macOS, and Linux.

• .NET Core is open-source and has a modular architecture, allowing developers to include only the necessary components.

• .NET Framework includes Windows-specific features like Windows Forms and WPF, ...read more
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Q7. What is the concept of async and await in C#?
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Q8. What major challenges did you faced in your previous experiences while developing application?
Ans. 
Faced challenges in scalability, team collaboration, and integrating new technologies during application development.
• Scalability issues: In a previous project, our application faced performance bottlenecks during peak usage, requiring us to refactor the architecture.

• Team collaboration: Coordinating between remote teams led to miscommunication; we implemented daily stand-ups to improve alignment.

• Integration of new techn...read more
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Q9. What is the purpose of using JOIN in SQL Server?
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Q10. What is polymorphism in C#?
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It was overall an easy test. It had Aptitude , logical reasoning and technical questions.

It had 2 coding questions. , Both were moderate level questions

Q1. It was overall a good technical round
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Q2. Be clear with whatever you write in your resume.
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Q1. Tell me something about yourself
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