Which tool is commonly used for logging API activity in production?

  • Elasticsearch
  • Postman
  • Swagger
  • Winston
Winston is a widely used logging tool for API activity in production. It allows developers to capture and analyze logs effectively. With features like log rotation and customizable log levels, Winston provides the necessary tools to manage and troubleshoot API activities in a production environment.

When conducting API tests, what is the importance of HTTP status codes?

  • Indicate success or failure of a request
  • None of the above
  • Provide encryption for the data transfer
  • Specify the programming language used
HTTP status codes convey whether a request was successful or not, helping testers understand the outcome and take appropriate actions based on the code received.

To manage the scalability of API monitoring, integrating _________ into your monitoring strategy is essential.

  • Caching
  • Compression
  • Load Balancing
  • Tracing
Load balancing is vital for ensuring the scalability of API monitoring. By distributing incoming API requests across multiple servers, load balancing helps prevent overload on a single server, improving performance and availability. Integrating load balancing into monitoring strategies is key for handling increased traffic and maintaining system stability.

In unit testing, the emphasis is on _________, whereas API testing often requires broader test cases encompassing various system interactions.

  • Functionality
  • Isolation
  • Performance
  • Scalability
Detailed In unit testing, the emphasis is on isolation, where individual components are tested in isolation from the rest of the system. This allows for a granular examination of each component's functionality. On the other hand, API testing requires broader test cases to evaluate how different components interact with each other. Testing for scalability and performance is often essential in API testing, ensuring the system's stability under various conditions.

Which feature of API Gateways helps in managing traffic and load balancing?

  • Authentication
  • Logging
  • Rate Limiting
  • Service Discovery
Load balancing is a critical feature of API Gateways that helps distribute incoming traffic across multiple servers, ensuring optimal performance and resource utilization.

API testing requires understanding the _________ of the API to ensure comprehensive coverage.

  • Database schema
  • External interfaces
  • Internal workings
  • User interface
Understanding the external interfaces of an API is crucial in API testing to ensure that all interactions with external components, such as clients or other services, are handled correctly for comprehensive test coverage.

How would you approach testing an application that integrates multiple third-party APIs with varying rate limits and data formats?

  • Assume that if each API works independently, the integration will work seamlessly.
  • Conduct load testing only on APIs with the highest rate limits to cover potential bottlenecks.
  • Implement a test harness to simulate different API rate limits and data formats, assessing the application's response.
  • Rely on the third-party APIs to provide consistent rate limits and data formats.
Creating a test harness allows emulating various API scenarios, helping identify potential issues with rate limits and data formats in the integrated environment.

Which OAuth grant type is most suitable for a web application accessing an API on behalf of a user?

  • Authorization Code
  • Client Credentials
  • Implicit
  • Resource Owner Password Credentials
OAuth 2.0 provides the Authorization Code grant type for web applications, allowing them to obtain access tokens securely on behalf of a user. This involves exchanging an authorization code for an access token.

In negative testing, checking for _________ helps to ensure that API does not expose sensitive data on invalid inputs.

  • Error Handling
  • Exception Handling
  • Security Vulnerabilities
  • Unauthorized Access
In negative testing, checking for unauthorized access helps ensure that the API does not expose sensitive data when faced with invalid inputs. Unauthorized access attempts are common attack vectors, and robust security measures are essential to protect sensitive information.

Why is it important to have real-time monitoring for APIs in production?

  • To enhance development speed
  • To generate reports for management
  • To identify issues promptly
  • To reduce server costs
Real-time monitoring for APIs in production is crucial for identifying issues promptly. By receiving immediate feedback on performance, errors, and user interactions, development teams can quickly address problems, ensuring a seamless user experience and minimizing potential business impact.