Token-based authentication is often used in RESTful APIs because it does not maintain _______.
- Cookies
- Persistent Connections
- Server Logs
- Session State
Token-based authentication is preferred in RESTful APIs as it does not require maintaining session state on the server.
Which protocol is commonly used for secure, token-based authentication in web services?
- FTP
- OAuth
- SOAP
- UDP
OAuth is commonly used for secure, token-based authentication in web services, providing a standardized way for third-party applications to obtain limited access to a web service.
A _______ certificate is often used in web services to establish a secure connection between client and server.
- PGP
- SHA-256
- SSL/TLS
- X.509
An X.509 certificate is often used in web services to establish a secure connection between the client and server, providing authentication and encryption.
REST APIs typically return data in _______ format, while GraphQL can be more flexible.
- HTML
- JSON
- XML
- YAML
REST APIs commonly return data in JSON format, whereas GraphQL provides more flexibility in the format of returned data.
When integrating web services with legacy systems, which data format might be preferred and why?
- JSON
- SOAP
- XML
- YAML
When integrating with legacy systems, XML might be preferred due to its rich schema definition and strong data typing. XML allows for precise data representation, which is crucial for interoperability and compatibility with existing systems that may rely on specific data structures.
The concept of _______ in GraphQL allows for real-time data updates, unlike typical REST APIs.
- Notifications
- Observers
- Subscriptions
- Transactions
GraphQL introduces the concept of subscriptions, enabling real-time data updates, a feature not inherent in traditional REST APIs.
For a project requiring extensive API versioning due to frequent updates, which approach is more manageable?
- Header Versioning
- Media Type Versioning
- Query Parameter Versioning
- URI Versioning
Header Versioning is more manageable for extensive API versioning, as it keeps version information separate from the URI, promoting cleaner and more flexible URLs.
A team is testing a web service integrated with several third-party APIs. What strategy should they prioritize for effective integration?
- Mocking third-party APIs for controlled testing
- Relying solely on live third-party API calls
- Skipping integration testing for third-party APIs
- Testing only one third-party API at a time
Mocking third-party APIs allows the team to control the testing environment, ensuring effective and controlled integration testing.
In a scenario where multiple web services need to be integrated seamlessly, how does UDDI play a role?
- Quality of Service (QoS)
- Registry and Repository
- SOAP (Simple Object Access Protocol)
- Web Service Definition Language (WSDL)
UDDI serves as a Registry and Repository in scenarios where multiple web services need seamless integration. It acts as a central location where service providers publish service descriptions, and consumers can discover and integrate these services efficiently, promoting interoperability in a distributed environment.
When considering mobile application development, why might GraphQL be preferred over REST?
- Better support for offline capabilities
- Faster data transfer with smaller payloads
- Reduced over-fetching, leading to optimized performance
- Simplicity in handling complex queries
GraphQL allows for reduced over-fetching, optimizing performance especially in mobile environments with limited bandwidth.