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.
_______ is an XML-based protocol used for exchanging structured information in web services.
- JSON
- SOAP
- WSDL
- XML-RPC
SOAP (Simple Object Access Protocol) is an XML-based protocol used for exchanging structured information in web services.
What is the impact of microservices on traditional SOA practices?
- Enhancement of centralized monolithic systems
- Increased complexity and management overhead
- No impact; microservices are a subset of SOA
- Shift towards decentralized and smaller services
Microservices impact traditional SOA practices by shifting towards decentralized and smaller services. While both share common principles, microservices emphasize smaller, independent services that operate autonomously, challenging some aspects of the centralized and monolithic nature associated with traditional SOA practices.
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.
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.
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.
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.
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.
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.
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 considering caching mechanisms, which approach is generally more efficient in REST compared to SOAP?
- Both REST and SOAP have similar caching efficiency
- Caching is not applicable in either REST or SOAP
- REST is generally more efficient in caching due to statelessness
- SOAP provides better caching mechanisms due to its structure
REST is typically more efficient in caching due to its stateless nature. Stateless communication allows for easier caching implementation as each request from a client to a server is independent, reducing complexity and enhancing caching efficiency in distributed systems.
Which element in a WSDL file defines the data types used by the web service?
The element in a WSDL file is used to define the data types that will be used by the web service, specifying the structure of the input and output messages.