Which protocol is most commonly used for Web APIs?
- FTP (File Transfer Protocol)
- HTTP (Hypertext Transfer Protocol)
- SMTP (Simple Mail Transfer Protocol)
- TCP (Transmission Control Protocol)
The most commonly used protocol for Web APIs is HTTP (Hypertext Transfer Protocol). It is the foundation of data communication on the World Wide Web and is used for requesting and transmitting data between clients and servers, making it ideal for web-based APIs.
Imagine you are tasked with ensuring that an API complies with GDPR regulations. What steps would you take?
- Conduct a security audit to identify potential data breaches and vulnerabilities.
- Encrypt all data transmissions between the client and server.
- Implement strict user authentication and authorization controls.
- Regularly monitor and report on data usage and access.
Ensuring GDPR compliance for an API involves steps such as conducting a security audit to identify vulnerabilities and potential data breaches. GDPR compliance requires a proactive approach to protect user data and ensure that it is handled securely. Encryption, user authentication, and monitoring data access are essential components of GDPR compliance.
Keeping API keys secure is important to prevent unauthorized ______ to sensitive data.
- Access
- Authentication
- Encryption
- Request
Keeping API keys secure is important to prevent unauthorized access to sensitive data. If an API key is compromised, it can lead to unauthorized access to the protected resources.
How does GraphQL handle real-time data and subscriptions?
- By using WebSocket connections
- Through frequent polling of the server
- By establishing direct database connections
- Using long-polling techniques
GraphQL handles real-time data and subscriptions using WebSocket connections. This allows the server to push data updates to clients, providing real-time capabilities. WebSocket connections are more efficient and responsive compared to frequent polling (Option B) or long-polling (Option D). Direct database connections (Option C) are not typically used due to security and scalability concerns.
Tools like Swagger are used to create ________ for APIs, making it easier for developers to understand and use them.
- Authentication
- Authorization
- Documentation
- Testing
Tools like Swagger are used to create documentation for APIs, making it easier for developers to understand and use them. API documentation generated by Swagger provides clear information about the API endpoints, request and response formats, and usage examples, helping developers work with the API effectively.
What is the purpose of load testing for APIs?
- To assess API functionality
- To check the API's color
- To evaluate API security
- To measure API performance
The purpose of load testing for APIs is to measure the performance and responsiveness of an API under different levels of demand. This helps identify bottlenecks and ensure the API can handle high loads without degrading performance.
How does REST differ from SOAP in terms of flexibility and standards enforcement?
- Both REST and SOAP have the same level of flexibility and standards.
- REST enforces strict standards, while SOAP is flexible.
- REST is more flexible and has fewer standards.
- SOAP is more flexible and has fewer standards.
REST (Representational State Transfer) is generally considered more flexible than SOAP (Simple Object Access Protocol). REST allows developers to choose how they structure their API, while SOAP enforces strict standards and XML-based message formats. This flexibility in REST can make it more suitable for various use cases.
Imagine you are designing an API for a healthcare system. How would you implement RBAC to ensure data privacy and compliance with regulations?
- Role-Based Access Control (RBAC) restricts access to resources based on user roles, ensuring that only authorized users can access sensitive healthcare data.
- Implementing Random Access Control to provide a dynamic, non-deterministic access system.
- Using OAuth for authentication and authorization.
- Using IP whitelisting to control access to the API.
In the context of a healthcare system, implementing Role-Based Access Control (RBAC) is essential to restrict access to sensitive data. RBAC ensures that only authorized users with specific roles can access patient information, contributing to data privacy and regulatory compliance. Other options, such as random access control, OAuth, and IP whitelisting, may not provide the necessary granularity and security required in healthcare settings.
API versioning allows developers to introduce _____ without affecting existing clients.
- Breaking changes
- Bug fixes
- Data storage
- New features
API versioning allows developers to introduce new features without affecting existing clients. It ensures backward compatibility and enables the evolution of the API while maintaining support for older clients.
What are some of the limitations of HTTP/1.1 that are addressed by HTTP/2 in the context of Web APIs?
- HTTP/1.1 doesn't support server push, causing delays in data retrieval.
- HTTP/1.1 has a low level of security, making it vulnerable to attacks.
- HTTP/1.1 is not multiplexed, leading to performance issues with multiple requests.
- HTTP/1.1 lacks header compression, resulting in inefficient data transfer.
HTTP/2 addresses several limitations of HTTP/1.1 in the context of Web APIs. One limitation is that HTTP/1.1 is not multiplexed, leading to performance issues when handling multiple requests. HTTP/2 allows multiple streams of data to be sent concurrently over a single connection, improving performance. Another limitation of HTTP/1.1 is the lack of header compression, resulting in inefficient data transfer, while HTTP/2 introduces header compression to reduce overhead. Additionally, HTTP/1.1 doesn't support server push, causing delays in data retrieval, whereas HTTP/2 introduces server push for faster data delivery.