IBM Senior Software Engineer 1 Interview Questions and Answers

Q1. SpringBootApplication annotation
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Q2. Configure Multiple Datasource
Ans. 
Configuring multiple datasources involves defining multiple connection properties and managing them in the application.
• Define multiple datasource configurations in application.properties or application.yml file

• Use @Primary annotation to specify the primary datasource

• Use @Qualifier annotation to specify which datasource to inject in a specific component

• Configure datasource beans in a configuration class
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Q1. What is abstract class
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An abstract class is a class that cannot be instantiated and is used as a blueprint for other classes to inherit from.
• Cannot be instantiated directly

• May contain abstract methods that must be implemented by subclasses

• Can have both abstract and non-abstract methods

• Used to define common behavior for subclasses
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Q2. How to implement singleton pattern
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Singleton pattern ensures a class has only one instance and provides a global point of access to it.
• Create a private static instance variable of the class itself

• Make the constructor private to prevent instantiation from outside the class

• Provide a static method to access the singleton instance
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Q1. Interviewer starts from basic core questions like encapsulation, abstraction, auto boxing, string, muutable. It was around 1 hour but they scheduled only half hour discussion.
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Write some basic codes

Q1. What in . Net Core
Ans. 
ASP.NET Core is a cross-platform, high-performance framework for building modern, cloud-based, internet-connected applications.
• ASP.NET Core is open-source and developed by Microsoft.

• It supports cross-platform development on Windows, macOS, and Linux.

• It provides improved performance and scalability compared to previous versions of ASP.NET.

• ASP.NET Core includes a modular and lightweight architecture.

• It supports Docker co...read more
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Q2. Oops implementation with example
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Oops implementation is a programming concept that allows for error handling and recovery.
• Oops implementation involves using try-catch blocks to handle exceptions in code.

• Example: try { // code that may throw an exception } catch (Exception e) { // handle the exception }

• Oops implementation helps in making code more robust and reliable by handling unexpected errors gracefully.
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Q1. Regarding skill set like Java Core, project related questions, regarding framework development like Nodejs, Cypress, Playwright with Mocha framework, Rest assured.
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Q1. Java, basics of coding
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Q1. Java , spring boot micro services
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Amcat, SQL, spring boot

Q1. Current CTC? Expected CTC?
Ans. 
Current CTC is confidential. Expected CTC is based on market standards and my experience.
• Current CTC is confidential information as per company policy.

• Expected CTC is based on market standards and my experience in the industry.

• I am open to discussing compensation during the negotiation phase.
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Q2. Years of experience in relevant role
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Q1. Performance tuning
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Q2. Collections in Oracle
Ans. 
Collections in Oracle are data structures used to store and manipulate groups of data.
• Collections can be nested tables, varrays, or associative arrays.

• Nested tables are like one-dimensional arrays, varrays are like arrays with a maximum size, and associative arrays are like dictionaries.

• Collections can be used to pass multiple values as a single parameter to a stored procedure or function.

• Example: DECLARE TYPE emp_list...read more
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Q1. Explain about your previous work experience
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Q2. Technical questions
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Q1. Details about Java, Spark, springboot etc
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Q2. Database questions
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