API and Microservices Security Design Quiz

1. Which of the following is a critical component of threat modeling for microservices APIs?

Identifying assets, threats, and vulnerabilities

Documenting all user feedback

Removing all security features

Ignoring potential attack vectors

2. In API security design, what does the term 'idempotency' help prevent?

Unauthorized access to resources

Unintended duplicate operations from retried requests

SQL injection attacks

Cross-site scripting vulnerabilities

3. What is the primary purpose of secrets management in microservices architecture?

To store credentials securely and rotate them automatically

To eliminate all authentication requirements

To hardcode sensitive values in configuration files

To reduce the number of API endpoints

4. Which approach best describes the defense-in-depth strategy for microservices security?

Relying on a single security mechanism

Implementing multiple overlapping security controls at different layers

Ignoring security vulnerabilities

Using only network-level security

5. In API security, what is the primary risk of insufficient logging and monitoring?

Increased server memory usage

Inability to detect and respond to security incidents

Slower API response times

Reduced code readability

6. Which security header helps prevent clickjacking attacks on API-consuming web applications?

X-Frame-Options

Content-Type

Accept-Encoding

Cache-Control

7. What does JWT (JSON Web Token) provide in API security?

Stateless authentication and claims-based authorization

Encryption of all database records

Replacement for HTTPS

Automatic SQL injection prevention

8. In microservices security, what is service mesh primarily used for?

Storing application configuration

Managing inter-service communication, encryption, and authentication

Replacing API gateways entirely

Eliminating the need for firewalls

9. Which vulnerability does input validation primarily protect against?

Denial-of-service attacks only

SQL injection, XSS, and command injection attacks

Network latency issues

Database performance degradation

10. What is the primary purpose of API versioning in security architecture?

To increase API response time

To manage breaking changes and maintain backward compatibility securely

To eliminate the need for authentication

To reduce code complexity

11. Which authentication method is most suitable for securing API communication between microservices in a zero-trust architecture?

Basic authentication with plaintext credentials

Mutual TLS (mTLS) with certificate-based authentication

API keys stored in environment variables

Session cookies shared across services

12. In API security, what does the principle of least privilege mean?

Grant users maximum access to simplify administration

Grant users only the minimum permissions needed for their role

Eliminate all access controls

Allow anonymous access to all endpoints

13. Which security pattern involves encrypting sensitive data before storing it in a database?

Tokenization

Data masking

Field-level encryption

Hashing without encryption

14. What is a primary security risk of using hardcoded API keys in application code?

Keys are exposed in version control repositories

Keys cannot be revoked quickly

Keys become visible in compiled binaries

All of the above

15. Which approach best describes role-based access control (RBAC) in microservices?

Granting permissions based only on user identity

Assigning permissions to roles, then assigning roles to users

Allowing all users equal access to all services

Using only usernames for authorization decisions

16. In a microservices architecture, what is the primary purpose of an API gateway?

Store all application data

Centralize authentication, rate limiting, and request routing

Replace database servers

Eliminate the need for encryption

17. What does CORS (Cross-Origin Resource Sharing) primarily protect against in API security?

SQL injection attacks

Unauthorized cross-origin requests from web applications

Brute force password attacks

Man-in-the-middle attacks

18. Which cryptographic protocol should be used to encrypt data in transit between microservices?

SSL 2.0

TLS 1.2 or higher

WEP

HTTP without encryption

19. What is the primary advantage of implementing API rate limiting in a microservices architecture?

Reduces database query complexity

Prevents denial-of-service attacks and ensures fair resource allocation

Eliminates the need for authentication

Increases API response time

20. In OAuth 2.0, which grant type is most appropriate for server-to-server API authentication?

Authorization Code Grant

Client Credentials Grant

Implicit Grant

Resource Owner Password Credentials Grant

SecurityX API and Microservices Security Design Quiz