How does a stub differ from a mock in integration testing?
- A mock is a complete, functional implementation of a component
- A mock is only used in object-oriented programming
- A stub is a simplified implementation of a component with fixed behavior
- A stub is used for unit testing, while a mock is used for integration testing
In integration testing, a stub is a simplified version of a component with predetermined behavior, while a mock is a complete, functional implementation with expected behavior.
_______ is a constraint of RESTful services that dictates the simplicity of the interface provided to services.
- HATEOAS
- Idempotence
- Statelessness
- Uniform Interface
In REST, the Uniform Interface constraint emphasizes a simple and consistent interface for services, promoting ease of use and understanding.
For deleting a resource in REST, what HTTP method is implemented?
- DELETE
- PATCH
- POST
- PUT
The DELETE method in REST is used to delete a resource. It requests the removal of the specified resource, and the operation is idempotent, meaning that subsequent requests have no additional effect once the resource is deleted.
A web service needs to exchange data with multiple clients using XML. What is the best approach to ensure data consistency and validation?
- Document Object Model (DOM)
- Representational State Transfer (REST)
- Simple Object Access Protocol (SOAP)
- XML Schema Definition (XSD)
XML Schema Definition (XSD) is used to define the structure and data types of XML, ensuring consistency and validation in data exchange.
When developing a new mobile application that relies on fast and efficient data exchange, which data format is more suitable?
- BSON
- CSV
- JSON
- Protocol Buffers (protobuf)
For a mobile application requiring fast and efficient data exchange, Protocol Buffers (protobuf) is a more suitable choice. It offers a compact binary format, reducing the size of data payloads and improving serialization and deserialization speed. This is crucial for mobile applications operating in resource-constrained environments where bandwidth and processing power are significant factors in ensuring a responsive and seamless user experience.
For microservices, what strategy should be adopted for effective unit testing?
- Avoiding unit testing altogether
- Ignoring unit tests for microservices
- Mocking external dependencies
- Relying solely on end-to-end testing
Effective unit testing in microservices often involves mocking external dependencies to isolate each microservice during testing.
In UDDI, service providers are categorized under the _______ element.
- businessEntity
- providerCategory
- serviceClassification
- technicalDetails
In UDDI, service providers are categorized under the businessEntity element. This element is used to represent business entities, including service providers, and contains information about their services and other related details.
_______ is an advanced technique used to manage and ensure interoperability among distributed web services.
- BPEL (Business Process Execution Language)
- Enterprise Service Bus (ESB)
- JSON-RPC
- RDF (Resource Description Framework)
Business Process Execution Language (BPEL) is an advanced technique used to manage and ensure interoperability among distributed web services. BPEL provides a standard for defining and orchestrating business processes, allowing seamless coordination and communication between different services in a distributed environment.
How does containerization benefit Microservices?
- Centralized Configuration
- Monolithic Scaling
- Portability and Consistency
- Tight Integration
Containerization provides benefits like portability and consistency, allowing Microservices to be deployed consistently across various environments.
In a scenario where a web service handles real-time transactions, what encryption technique would balance security and performance?
- Chaotic Encryption
- Elliptic Curve Cryptography (ECC)
- Quantum Key Distribution (QKD)
- Stream Cipher
Elliptic Curve Cryptography (ECC) is known for providing strong security with relatively lower computational overhead, making it suitable for real-time transactions.