Luxoft Interview Questions, Process, and Tips

Q1. Principal of garbage collection
Ans. 
Garbage collection is an automatic memory management process that frees up memory occupied by objects that are no longer in use.
• Garbage collection is performed by the JVM.

• It helps prevent memory leaks and improves application performance.

• There are different types of garbage collectors such as serial, parallel, CMS, and G1.

• Garbage collection can cause pauses in the application, which can be minimized by tuning the JVM p...read more
Answered by AI
Add your answer
Q2. Micro services design pattern
Ans. 
Microservices design pattern is an architectural approach to building software applications as a collection of small, independent services.
• Microservices are independently deployable and scalable

• Each microservice focuses on a specific business capability

• Communication between microservices is done through APIs

• Microservices can be developed using different programming languages and technologies

• Examples of companies using
Answered by AI
Add your answer
Q3. Spring bòot annotations
Add your answer
Q4. Sessions in hibernate
Ans. 
Sessions in Hibernate are used to manage the interaction between the application and the database.
• A session is a single-threaded object that represents a connection between the application and the database.

• It is responsible for managing the persistence of objects, executing queries, and providing transactional support.

• A session can be obtained from a session factory and should be closed when no longer needed.

• Example: S...read more
Answered by AI
Add your answer
Q5. What is Hash collusion
Ans. 
Hash collusion is when two different inputs produce the same hash value.
• It is a security vulnerability in hash functions.

• Attackers can exploit this vulnerability to create a collision attack.

• For example, an attacker can create a malicious file with the same hash value as a legitimate file to bypass security checks.
Answered by AI
Add your answer
Q6. What is saga design pattern
Ans. 
Saga design pattern is used to manage long-lived transactions between microservices.
• It ensures that all services involved in a transaction are either committed or rolled back together.

• It uses a sequence of local transactions to achieve global consistency.

• It can be implemented using either choreography or orchestration.

• Example: A customer places an order, which involves multiple microservices such as inventory, payment,...read more
Answered by AI
Add your answer

Q1. Tell about yourself
Add your answer
Q2. Previous project
Add your answer

Q1. Create Custom annotation
Ans. 
Custom annotations can be created using @interface in Java.
• Create a new interface with @interface keyword

• Add required elements and default values

• Use the annotation by adding @ followed by the annotation name

• Example: @CustomAnnotation(value = "example")

• Annotations can be used for compile-time checks or runtime behavior
Answered by AI
Add your answer
Q2. Memory management in Java 8
Ans. 
Java 8 uses automatic memory management through garbage collection.
• Java 8 uses a garbage collector to automatically manage memory.

• The garbage collector frees up memory by removing objects that are no longer in use.

• Java 8 introduced the G1 garbage collector which is designed to reduce pause times.

• Developers can also use tools like jmap and jstat to monitor memory usage.
Answered by AI
Add your answer
Q3. What algo Java 8 Garbage collector follow
Ans. 
Java 8 Garbage collector follows the algorithm called G1 (Garbage-First).
• G1 divides the heap into regions and collects garbage in small portions called 'garbage-first' regions.

• It uses multiple parallel threads for garbage collection.

• G1 aims to minimize pause times by dynamically adjusting the amount of garbage collected in each region.

• It uses a combination of young and old generation collection to achieve better perfor...read more
Answered by AI
View 1 more answer
Q4. @retension annotation
Add your answer
Q5. Java Design Patterns
Add your answer
Q6. What is SOLID Principal? and Explain L into it?
Ans. 
SOLID is a set of principles for object-oriented programming. L stands for Liskov Substitution Principle.
• SOLID principles help in creating maintainable and scalable software.

• Liskov Substitution Principle states that objects of a superclass should be replaceable with objects of its subclasses without affecting the correctness of the program.

• This principle ensures that the behavior of the program remains consistent even ...read more
Answered by AI
Add your answer

Q1. Embedded c coding pointers structure
Add your answer
Q2. Autosar bsw interview. Specifically DEM DCM
Add your answer
Q3. Autosar concepts, it's architecture, rte
Add your answer

There was a one hackerearth test conducted as 1st round of interview.

Q1. Technical round with some coding challenges
Add your answer

Q1. Managerial and Technical with some realtime scenarios
Add your answer

Q1. Can you explain your previous projects that are related to the job profile you applied for?
Ans. 
I have worked on multiple projects related to process improvement and cost reduction in the consulting industry.
• Led a team in implementing a new software system to streamline client communication and project tracking

• Developed and executed a cost reduction strategy for a client resulting in 15% savings in operational expenses

• Conducted market research and analysis to identify new business opportunities for clients
Answered by AI
Add your answer

Q1. Can you demonstrate how to create a simple Jenkins job with the required parameters for a specific use case?
Ans. 
Creating a simple Jenkins job with required parameters
• Log in to Jenkins and click on 'New Item'

• Enter a name for the job and select 'Freestyle project'

• Add build steps, post-build actions, and configure parameters as needed

• Save the job and run it to test
Answered by AI
Add your answer