In API caching, _________ is used to specify how long the response should be considered fresh.
- Cache-Control
- ETag
- Expires
- Last-Modified
In API caching, the "Expires" header is used to specify the date and time until which the cached response is considered fresh. It helps clients determine whether the cached data can still be used or if a new request to the server is required.
API rate limiting is often implemented using the _________ pattern, which helps in controlling the traffic flow to the API.
- Circuit Breaker
- Leaky Bucket
- Throttling
- Token Bucket
Rate limiting is often implemented using the Leaky Bucket pattern, which controls the rate at which requests are allowed to flow to the API. The Leaky Bucket algorithm allows a constant number of requests to be processed per unit of time, helping to prevent bursts of traffic.
SOAP APIs are known for their:
- Strong Typing
- Loose Coupling
- Statelessness
- Synchronous Communication
The correct option is Strong Typing. SOAP APIs are known for enforcing strong typing, which means that the data types of the values in a message are explicitly defined. This adds a layer of rigor to data validation but may result in more complex structures.
SOAP APIs are more rigid in their structure due to the use of ______, while RESTful APIs offer more flexibility with ______.
- JSON
- WSDL
- XML
- YAML
SOAP APIs are typically associated with XML, which enforces a more rigid structure. On the other hand, RESTful APIs use formats like JSON, providing greater flexibility in data representation.
_________ is a strategy in API caching that involves storing responses based on request parameters.
- FIFO (First In, First Out)
- Key-based caching
- LRU (Least Recently Used)
- Time-based caching
In API caching, key-based caching is a strategy where responses are stored based on specific request parameters. This allows for efficient retrieval of cached data when subsequent requests share the same parameters.
What is the best practice for phasing out a widely used API?
- Gradually phase out the API, supporting it for an extended period, and guiding users toward adopting newer versions or alternatives.
- Ignore the API and let users find alternatives on their own.
- Provide no guidance or support during the deprecation process.
- Stop supporting the API immediately to force users to migrate quickly.
The best practice for phasing out a widely used API involves a gradual approach, continued support, and guidance for users to transition smoothly. Abruptly ending support may disrupt services for users and create dissatisfaction.
Which factor is most critical when dealing with large-scale data in API testing?
- Compatibility
- Reliability
- Scalability
- Usability
Scalability is crucial in handling large-scale data in API testing. It ensures that the system can handle increased data loads without compromising performance.
How does load testing differ from stress testing in API performance testing?
- Evaluates the system's behavior under extreme conditions beyond its normal capacity.
- Focuses on identifying bottlenecks and potential failures under normal conditions.
- Measures the system's capability to handle a specific load without performance degradation.
- Tests the system's stability and robustness during prolonged use.
Load testing simulates expected load, while stress testing pushes the system to its limits to identify breaking points. Stress testing helps uncover vulnerabilities under extreme conditions that load testing may not reveal.
Testing the API's response to _________ is vital in understanding its behavior under malicious requests.
- Cross-Site Scripting (XSS) Attacks
- Denial of Service (DoS) Attacks
- Invalid Inputs
- SQL Injection Attacks
Examining how an API responds to Cross-Site Scripting (XSS) Attacks is crucial in understanding its behavior under malicious requests. XSS attacks involve injecting malicious scripts, and the API's response handling is integral in preventing such threats.
Ensuring _________ compatibility is critical when integrating and testing a third-party API within different environments or platforms.
- Browser
- Device
- Platform
- Version
Ensuring Platform compatibility is critical in third-party API integration testing. It involves verifying that the API functions seamlessly across different environments, operating systems, and platforms to guarantee a consistent user experience.
What role do testers play in the early stages of software development?
- Code implementation
- Execute the final test cases
- Identify potential issues early
- User interface design
Testers play a crucial role in identifying potential issues early in the software development lifecycle. By doing so, they contribute to the overall quality of the software and help prevent issues from escalating to later stages, where they can be more challenging and costly to resolve.
In API testing, Boundary Value Analysis often reveals errors at the _________ of input ranges where edge cases are likely.
- Boundaries and Limits
- Edges and Limits
- Extremes and Limits
- Start and End
Boundary Value Analysis focuses on testing the edges of input ranges, uncovering potential errors at the boundaries where edge cases are likely to occur. This helps in identifying issues that may not be evident with typical values.