What is the primary difference in the way data is retrieved between GraphQL and REST?
- Both retrieve data in the same way
- GraphQL retrieves fixed data structures, while REST allows clients to request only the data they need
- None of the above
- REST retrieves fixed data structures, while GraphQL allows clients to request only the data they need
GraphQL allows clients to specify the exact data they need, minimizing over-fetching or under-fetching, while REST returns fixed data structures.
WS-Security is a standard that applies security at the _______ level.
- Application
- Message
- Network
- Transport
WS-Security is a standard that applies security at the message level. It ensures the confidentiality, integrity, and authentication of messages exchanged between web services by embedding security information directly within the SOAP message.
How does HTTP/2 improve performance compared to HTTP/1.1 in web services?
- All of the above
- Compression
- Multiplexing
- Prioritization
HTTP/2 improves performance through features like multiplexing, compression, and prioritization. These enhancements lead to more efficient data transfer, reduced latency, and optimized resource utilization, providing a significant boost in web services performance compared to the older HTTP/1.1 protocol.
In the context of web services, what does UDDI provide?
- Communication protocol for web services
- Data serialization for web services
- Directory services for discovering web services
- Security for web services
UDDI (Universal Description, Discovery, and Integration) provides directory services for discovering web services, allowing applications to find and invoke web services dynamically.
A web service has to be updated without disrupting existing clients. What versioning strategy should be used?
- Header Versioning
- Media Type Versioning
- Query Parameter Versioning
- URI Versioning
Header Versioning involves specifying the version information in the HTTP headers, allowing seamless updates without disrupting existing clients.
When performing integration testing, what is typically the first step?
- Check the user interface for consistency
- Integrate the components and test their interaction
- Test the individual units in isolation
- Validate the overall functionality of the web service
The typical first step in integration testing is to test the individual units in isolation before validating their interaction as a whole.
Mock services can be used to simulate _______ in a service-oriented architecture.
- Database transactions
- External dependencies
- Front-end design
- Real-time data
Mock services are often employed to simulate external dependencies in a service-oriented architecture, enabling thorough testing.
SOAP messages are typically transported using _______ protocol.
- HTTP
- SMTP
- TCP
- UDP
SOAP messages are commonly transported over HTTP protocol, making them platform-independent and easily accessible.
Achieving _______ compliance is critical for web services handling medical data.
- Privacy
- Regulatory
- Security
- Standard
Web services handling medical data must achieve regulatory compliance to meet legal requirements and ensure data security.
OAuth provides _______ as a way to grant limited access to an HTTP service.
- Cookies
- Headers
- Sessions
- Tokens
OAuth provides tokens as a way to grant limited access to an HTTP service. Tokens are issued after successful authentication and authorization and are used to access protected resources without exposing the user's credentials.