10+ Dhanlaxmi Bank Interview Questions and Answers

Answering questions related to Technical Lead interview

• I have experience in containerization and orchestration tools like Docker and Swarm, which will help me quickly learn and adapt to Kubernetes

• I have a strong understanding of distributed systems and cloud infrastructure, which are key components of Kubernetes architecture

• Steps to deploy Kubernetes involve setting up a cluster, configuring nodes, installing Kubernetes components, and deploying applications using YAML files

• I...read more

Abstract classes and interfaces are used to achieve abstraction and provide a blueprint for classes to implement.

• Used abstract class to create a base class for different types of vehicles, with common properties and methods.

• Used interface to define a contract for different payment methods, with each method implementing its own logic.

• Abstract classes are used when we want to provide a default implementation for some methods, while leaving others to be implemented by the derive...read more

Authentication and authorization were handled using a combination of technologies and protocols.

• Used OAuth 2.0 for authentication

• Implemented role-based access control for authorization

• Stored user credentials securely using bcrypt hashing algorithm

• Used JSON Web Tokens (JWT) for session management

• Implemented two-factor authentication for sensitive operations

Customer information will be encrypted using industry-standard encryption algorithms and stored securely.

• Use industry-standard encryption algorithms such as AES or RSA

• Ensure that encryption keys are securely stored and managed

• Implement secure storage mechanisms such as hashing and salting

• Regularly review and update encryption protocols to ensure they remain secure

Yes, I have experience with Jenkins and Cloud Deployment.

• I have used Jenkins for continuous integration and continuous deployment.

• I have experience with setting up Jenkins pipelines for automated deployment.

• I have worked with cloud platforms like AWS and Azure for deploying applications.

• I have used tools like Ansible and Terraform for infrastructure automation.

• I have experience with containerization using Docker and Kubernetes for deployment.

• I have worked with Git for version...read more

IOC Container is a core feature of Spring Framework that manages the dependencies between objects.

• IOC stands for Inversion of Control

• It is used to achieve loose coupling between objects

• It allows objects to be created and wired together by an external framework

• It reduces the amount of code needed for configuration and maintenance

• Examples of IOC Containers in Spring are ApplicationContext and BeanFactory

We use @Value in Spring Boot to inject values from properties files or environment variables.

• Allows for external configuration of application properties

• Values can be injected from properties files or environment variables

• Can be used to inject values into fields, constructors, or methods

• Example: @Value("${my.property}") private String myProperty;

SQL databases are relational and use structured data, while NoSQL databases are non-relational and use unstructured data.

• SQL databases use tables with predefined schema, while NoSQL databases use documents, key-value pairs, or graphs.

• SQL databases are better for complex queries and data analysis, while NoSQL databases are better for scalability and flexibility.

• Examples of SQL databases include MySQL, Oracle, and PostgreSQL, while examples of NoSQL databases include MongoDB, C...read more

Yes, logging is an essential part of software development.

• Logging helps in debugging and troubleshooting issues.

• It provides a record of events and actions taken by the system.

• It helps in monitoring system performance and identifying bottlenecks.

• Examples of logging mechanisms include log4j, syslog, and ELK stack.

Serialization is used to convert complex data structures into a format that can be easily transmitted or stored.

• Serialization allows data to be sent over a network or saved to a file.

• It enables objects to be stored in a database or memory.

• Serialization is used in web services, messaging systems, and distributed computing.

• Examples include JSON, XML, and binary formats like Protocol Buffers and Apache Avro.

SAGA design pattern is used for managing long-lived transactions in distributed systems.

• SAGA pattern breaks down a long transaction into a series of smaller, more manageable steps.

• Each step in the SAGA pattern is a separate transaction that can be rolled back if needed.

• SAGA pattern ensures that the overall transaction is eventually consistent.

• Examples of SAGA pattern implementation include using compensating transactions or event-driven architecture.

Abstract classes and interfaces are used in object-oriented programming to achieve abstraction and define contracts.

• Abstract classes allow for partial implementation and can have both abstract and concrete methods.

• Interfaces define a contract that classes must adhere to, allowing for multiple inheritance.

• Abstract classes are used when some common functionality needs to be shared among closely related classes.

• Interfaces are used when different classes need to implement the sam...read more

Executor framework is an advanced version of threading with better control and management.

• Executor framework provides a higher level of abstraction than normal threading.

• Executor framework allows for better control and management of threads.

• Executor framework provides a thread pool that can be reused.

• Executor framework provides better exception handling and error reporting.

• Normal threading requires more manual management of threads.

• Normal threading can lead to resource conten...read more

Dot Net is a software framework developed by Microsoft, while Dot Net Core is a cross-platform, open-source version of Dot Net.

• Dot Net is a software framework developed by Microsoft, primarily for Windows platform.

• Dot Net Core is a cross-platform, open-source version of Dot Net, allowing development on Windows, macOS, and Linux.

• Dot Net Core is modular and lightweight compared to the traditional Dot Net framework.

• Dot Net Core supports microservices architecture and containeriz...read more

Springboot is a framework that simplifies the development of Java applications by providing a set of tools and conventions.

• Springboot uses embedded servers like Tomcat or Jetty to run applications.

• It auto-configures many components based on dependencies added to the project.

• It uses annotations like @SpringBootApplication to define the main class of the application.

• Springboot uses Spring Framework's Inversion of Control (IoC) and Dependency Injection (DI) principles.

• It simplif...read more

DW SCD types and their implementation

• DW SCD types are Slowly Changing Dimensions used to track changes in data over time

• Type 1: Overwrite old data with new data

• Type 2: Add new row with new data and keep old row for historical reference

• Type 3: Add new column to track changes in data

• Type 4: Combination of Type 2 and Type 3

• Implementation depends on business requirements and data characteristics