Spring Security - Level I

Practice 19 Spring Security - Level I interview questions with detailed answers. Part of the Spring Security track on Java Interview Hub.

• How does Spring Security integrate with OAuth2 for authorization?
• Explain Cross-Origin Resource Sharing (CORS) and how you would configure it in a Spring Boot application.
• Explain SecurityContext and SecurityContext Holder in Spring security.
• What do you mean by OAuth2 Authorization code grant type?
• How does Spring Security protect against Cross-Site Request Forgery (CSRF) attacks, and under what circumstances might you disable CSRF protection?
• How can you implement method-level security in a Spring application, and what are the advantages of this approach?
• Your organization uses an API Gateway to route requests to various microservices. How would you leverage Spring Security to authenticate and authorize requests at the gateway level before forwarding them to downstream services?
• In your application, there are two types of users: ADMIN and USER. Each type should have access to different sets of API endpoints. Explain how you would configure Spring Security to enforce these access controls based on the user's role.
• What do you mean by digest authentication?
• What is the best practice for storing passwords in a Spring Security application?
• Explain the purpose of the Spring Security filter chain and how you would add or customize a filter within it?
• How does Spring Security handle session management, and what are the options for handling concurrent sessions?
• You've encountered an issue where users are being unexpectedly denied access to a resource they should have access to. Describe your approach to debugging this issue in a Spring Security-enabled application.
• Describe how to implement dynamic access-control policies in Spring Security.
• How do you test security configurations in Spring applications?
• Explain salting and its usage in Spring Security.
• How can you use Spring Expression Language (SpEL) for finegrained access control?
• Explain what is AuthenticationManager and ProviderManager in Spring security.
• When a user tries to access a resource without the necessary permissions, you want to redirect them to a custom "access denied" page instead of displaying the default Spring Security error message. How would you achieve this in your Spring Security configuration?