__________ is a feature of API Gateway that allows you to define request and response transformations when integrating with AWS Lambda.
- API keys
- Authorization policies
- Mapping templates
- Rate limiting
Mapping templates in API Gateway allow you to define transformations for incoming requests and outgoing responses, facilitating integration with AWS Lambda.
AWS Lambda functions integrated with API Gateway can be associated with __________, allowing for fine-grained access control.
- Environment variables
- IAM roles
- Security groups
- VPC endpoints
AWS Lambda functions integrated with API Gateway can be associated with IAM roles, allowing for fine-grained access control based on the permissions assigned to the IAM role.
API Gateway can enforce __________ on incoming requests before allowing them to reach AWS Lambda.
- Authentication and authorization
- Data encryption
- Load balancing
- Rate limiting
API Gateway can enforce authentication and authorization on incoming requests before allowing them to reach AWS Lambda, ensuring only authorized users or systems can access the functions.
__________ is a feature of API Gateway that caches responses from AWS Lambda functions to improve latency and reduce costs.
- Cross-origin resource sharing (CORS)
- Request logging
- Response caching
- Traffic shaping
Response caching in API Gateway allows for the caching of responses from AWS Lambda functions to improve latency and reduce costs.
API Gateway allows for the creation of __________, enabling the decoupling of client applications from AWS Lambda implementations.
- API endpoints
- Direct integrations
- Lambda functions
- Webhooks
API Gateway allows for the creation of API endpoints, enabling the decoupling of client applications from AWS Lambda implementations.
Scenario: You are building a microservices architecture where multiple AWS Lambda functions handle different API endpoints. How would you design API Gateway to efficiently route incoming requests to the corresponding Lambda functions?
- Use API Gateway custom headers
- Use API Gateway query parameters
- Use API Gateway resource paths and HTTP methods
- Use API Gateway stage variables
By using API Gateway resource paths and HTTP methods, you can efficiently route incoming requests to the corresponding Lambda functions based on the request path and method.
Scenario: Your application requires secure authentication for API requests before they reach AWS Lambda. How would you configure API Gateway to handle authentication and authorization?
- Use API Gateway API keys
- Use API Gateway custom authorizers
- Use API Gateway usage plans
- Use AWS IAM roles
By using API Gateway custom authorizers, you can configure secure authentication and authorization for API requests before they reach AWS Lambda, ensuring controlled access to API endpoints.
Can you configure AWS Lambda to process S3 events across multiple AWS regions?
- No, AWS Lambda can only process S3 events within the same region
- No, AWS Lambda does not support processing S3 events across multiple regions
- Yes, by configuring Lambda aliases
- Yes, by configuring event source mappings
AWS Lambda supports configuring event source mappings to process S3 events across multiple AWS regions, enabling cross-region event processing.
How can API Gateway manage throttling and caching for AWS Lambda-backed APIs?
- By configuring usage plans and setting caching options in API Gateway
- By directly adjusting Lambda function settings
- By modifying Lambda function code
- By adjusting networking configurations
API Gateway can manage throttling by configuring usage plans to limit the number of requests per second and caching by setting caching options to cache responses from AWS Lambda-backed APIs, improving performance and reducing latency.
What are the steps involved in configuring API Gateway to trigger AWS Lambda functions?
- Create a new API in API Gateway, define resources and methods, and configure integration settings to invoke Lambda functions
- Install additional SDKs
- Modify VPC settings
- Update Lambda function IAM roles
Configuring API Gateway to trigger Lambda functions involves creating a new API, defining resources and methods, and configuring integration settings to specify which Lambda function to invoke for each method.