Fluper Mean Stack Developer Interview Questions and Answers

Q1. Net core architecture and features
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Q2. API structure and implementation
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Q1. Salary expectation
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Have to solve 2 coding questions on coding platform

Q1. Oops concept in java, its significance
Ans. 
Oops concept in Java refers to Object-Oriented Programming principles like inheritance, encapsulation, polymorphism, and abstraction.
• Inheritance allows a class to inherit properties and behavior from another class.

• Encapsulation hides the internal state of an object and restricts access to it.

• Polymorphism allows objects to be treated as instances of their parent class.

• Abstraction focuses on the essential characteristics
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Q2. Thread life cycle
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Q3. How microservices communicates
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Microservices communicate through lightweight protocols like HTTP, messaging queues, and RPC.
• HTTP: RESTful APIs are commonly used for communication between microservices.

• Messaging queues: Services can communicate asynchronously through message brokers like RabbitMQ or Kafka.

• RPC (Remote Procedure Call): Services can directly call each other's functions over the network.
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Q4. Questions about Collection, hashmap
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Q5. Java 8 features, lambda, stream api coding question
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Q1. Project specific questions
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Q2. @autowired, @qualifier, @primary, @transient, @volatile keyword
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Q3. Use of static keyword
Ans. 
The static keyword in Java is used to create class-level variables and methods that can be accessed without creating an instance of the class.
• Static variables are shared among all instances of a class

• Static methods can be called without creating an instance of the class

• Static blocks are used to initialize static variables
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Q4. Dynamic method dispatch
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Q5. DB connections flow in spring boot
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DB connections flow in Spring Boot involves configuring data source, creating connection pool, and managing transactions.
• Configure data source in application.properties or application.yml

• Use @EnableJpaRepositories to enable JPA repositories

• Create connection pool using HikariCP or Tomcat JDBC

• Manage transactions using @Transactional annotation
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Q6. Rest vs Soap web services
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REST is lightweight, uses standard HTTP methods, and is more flexible. SOAP is more rigid, uses XML, and has built-in security features.
• REST uses standard HTTP methods like GET, POST, PUT, DELETE for communication.

• SOAP uses XML for communication and has built-in security features like WS-Security.

• REST is more lightweight and flexible, making it easier to work with in modern web development.

• SOAP is more rigid and has a ...read more
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'write a code for reverse the array without using in build function

The first round was an aptitude test. There were 30 questions with 1 marks for each.

After being selected from the first round the second round was the Coding test there were 6 sets and 1 set had 3 questions. they told me to do it in an online compiler without an internet connection.

Q1. After being selected from the coding test. They took technical interviews and asked very basic questions like oops and all but they were doing cross-questioning.
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Q1. Ask basic questions related to mendix
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Q2. Microflow, nanoflow, association visibility
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Q1. What is HashMap?
Ans. 
HashMap is a data structure that stores key-value pairs and provides constant time complexity for basic operations.
• HashMap allows quick access to values based on their keys

• Keys must be unique and values can be duplicated

• HashMap is not thread-safe and requires synchronization for concurrent access

• Java's HashMap implementation uses hashing to distribute keys across buckets
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Q2. It’s a collection framework.
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