Birlasoft Fullstack Java Application Developer Interview Questions and Answers

Q1. Where are Logic App logs stored?
Ans. 
Logic App logs are stored in Azure Monitor Logs (formerly known as Log Analytics).
• Logic App logs are stored in Azure Monitor Logs, which is a centralized log storage and analytics service in Azure.

• Logs can be viewed and analyzed using Azure Monitor Logs queries.

• Logs can also be integrated with other Azure services for monitoring and alerting purposes.
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Q2. How to get the 5th top position data in Sql?
Ans. 
Use the OFFSET and FETCH clauses in SQL to get the 5th top position data.
• Use the ORDER BY clause to sort the data in descending order.

• Use the OFFSET clause to skip the first 4 rows.

• Use the FETCH clause to retrieve only the next row after skipping the first 4 rows.
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Q3. How do you implement custom middleware in .net core?
Ans. 
Custom middleware in .NET Core can be implemented by creating a class that implements the IMiddleware interface and adding it to the application pipeline.
• Create a class that implements the IMiddleware interface

• Implement the InvokeAsync method in the middleware class to handle the request processing logic

• Add the custom middleware to the application pipeline in the Configure method of the Startup class
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Q4. Explain Authentication & Authorization in asp.net core?
Ans. 
Authentication verifies the identity of a user, while authorization determines what resources a user can access.
• Authentication confirms the identity of a user through credentials like username and password.

• Authorization determines the permissions and access levels of a user based on their authenticated identity.

• In ASP.NET Core, authentication is handled through middleware like Identity, OAuth, or JWT tokens.

• Authorizati...read more
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Q5. Explain session management in asp.net core?
Ans. 
Session management in ASP.NET Core involves storing and retrieving user-specific data during a user's visit to a website.
• Session data is stored on the server side by default in ASP.NET Core

• Session data can be accessed and manipulated using the HttpContext.Session property

• Session data can be configured to use different storage providers such as in-memory, distributed cache, or SQL Server

• Session data is typically used to...read more
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Q1. SQL - a table with emp-id, emp-name, manager-id, Need to find the manger name for each emplyee.
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Q2. FizzBuzz - if number is divisible by 3 print "fizz", if by 5 print "buzz", if by both "fizzbuzz"
Ans. 
A simple program to print 'fizz' for multiples of 3, 'buzz' for multiples of 5, and 'fizzbuzz' for multiples of both.
• Iterate through numbers from 1 to n.

• Use modulo operator to check divisibility by 3 and 5.

• Print 'fizz', 'buzz', or 'fizzbuzz' accordingly.
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Q3. Is it necessary for classes implementing an interface to implement interface methods?
Ans. 
Yes, classes implementing an interface must implement interface methods.
• Classes implementing an interface must provide concrete implementations for all methods declared in the interface.

• Failure to implement all interface methods will result in a compilation error.

• Interfaces are used to define a contract that implementing classes must adhere to.
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Q4. Spring basics - annotations
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Q1. Spring boot basics
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Q1. Talked about my previous companies and salary. Before they conduct the interview I had told them my expectation, while negotiation they denied for providing that and were offering just 10% hike over my cur...read more
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What are Decorators?
Why to use decorators?
What is generator and itrator why to use generator insted of itrator?

Q1. How to read a file using inbuilt function in python?
Ans. 
Use the open() function to read a file in Python.
• Use the open() function with 'r' mode to open a file for reading.

• Use the read() method to read the contents of the file.

• Close the file using the close() method after reading.
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Ask 2 sorting techniques

1)Driffience between Abstract class &
Interface.
-abstract class
represents property
&
behaviour of an object
whereas
interface
represents
behaviour
of an object.
2)Driffience between equal() vs ==operator.
equal() is
an object class method
whereas
equal() of string class
override
the object class equal().
3)can we use pointer's in Java.
Not explicitly but implicitly we can use pointer's in java.
Dynamic m/m refers with help of pointer's but java does not support the pointer's.
when we r creating an object in java refrence varaible of an object holds the identity that is nothing but an implicit pointer that holds an unique identity of an object.
4)How we can print object ID.
-Object ID printed with help of object class which is a service provider class having 9().
5)what is object class.
-it is a super class of all predefined & userdefined class.
6)Write a prog to get name of main thread in java.
-class A
{
psvm(String args [])
{
s.o.pln(Thread.currentThread().getName());
}
}
7)length vs length()
-length
is
data menmber
of proxy class
whereas
length() is a string class().

Q1. Explain JVM in ur own language.
Ans. 
JVM is an abstract machine that executes Java bytecode.
• JVM stands for Java Virtual Machine.

• It is responsible for interpreting and executing Java bytecode.

• JVM provides platform independence to Java programs.

• It has its own memory management system and garbage collector.

• JVM can be implemented on different operating systems.

• Examples of JVM languages include Java, Kotlin, and Scala.
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Q2. Exlplaing Multhreading.
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Q1. How do one microservice communicate with the another microservice?
Ans. 
Microservices can communicate with each other through synchronous HTTP calls, asynchronous messaging, or using a message broker.
• Synchronous communication: Microservices can communicate directly through HTTP requests, such as REST APIs.

• Asynchronous communication: Microservices can use messaging protocols like RabbitMQ or Kafka to send and receive messages.

• Message broker: Microservices can communicate through a message b...read more
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Q2. Design patterns in microservices?
Ans. 
Design patterns in microservices help in structuring and organizing code for scalability and maintainability.
• Use patterns like Service Registry, Circuit Breaker, and Gateway for communication between microservices.

• Implement patterns like Saga, CQRS, and Event Sourcing for managing data consistency and scalability.

• Apply patterns like API Gateway, Decomposition, and Database per Service for better separation of concerns
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Q1. It asked basics of Java related to OOPs pillar and DSA questions
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Q2. DSA linkedlist coding summary etc
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Q1. How are you now??
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Q2. Are you good now anymore??
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Q1. Hashmap inter working, arraylist internal working, concurrent hashmap, comprator vs comprable, list, set, queue, transient vs volatile, Serializable, executor framework,
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Q2. Java 8 features especaily stream
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Q1. What are your salary expectations?
Ans. 
I am open to discussing salary based on the responsibilities and requirements of the position.
• I am flexible and open to negotiation.

• I am looking for a competitive salary based on my skills and experience.

• I would like to be compensated fairly for the value I can bring to the company.

• I am interested in discussing the overall compensation package, including benefits and bonuses.
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Q2. What is your family background?
Ans. 
My family background is diverse and multicultural, with members from different countries and professions.
• My parents are from different countries, which has exposed me to different cultures and languages.

• My father is a doctor and my mother is an engineer, which has influenced my interest in both medicine and technology.

• I have relatives who are teachers, artists, and entrepreneurs, which has broadened my perspective on v...read more
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Q3. Why are you looking for a change?
Ans. 
Looking for new challenges and growth opportunities.
• Seeking a more challenging role to enhance my skills and knowledge.

• Interested in working with new technologies and frameworks.

• Want to be part of a dynamic and innovative team.

• Desire for career growth and advancement.

• Looking for a better work-life balance.
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Q4. Where do you see yourself in 5 years?
Ans. 
In 5 years, I see myself as a highly skilled Fullstack Java Developer, leading a team and working on complex projects.
• Leading a team of developers

• Working on complex projects

• Continuously improving my skills

• Contributing to the success of the company
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Q5. Tell me about yourself.
Ans. 
I am a Fullstack Java Developer with experience in developing web applications using Java, Spring, and JavaScript.
• I have a strong understanding of Java programming language and its frameworks like Spring and Hibernate.

• I am proficient in front-end technologies like HTML, CSS, and JavaScript.

• I have experience in developing RESTful APIs and working with databases like MySQL and MongoDB.

• I am familiar with Agile development...read more
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