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NEW QUESTION # 469
A developer is troubleshooting an Amazon API Gateway API Clients are receiving HTTP 400 response errors when the clients try to access an endpoint of the API.
How can the developer determine the cause of these errors?
Answer: C
Explanation:
This solution will meet the requirements by using Amazon CloudWatch Logs to capture and analyze the logs from API Gateway. Amazon CloudWatch Logs is a service that monitors, stores, and accesses log files from AWS resources. The developer can turn on execution logging and access logging in Amazon CloudWatch Logs for the API stage, which enables logging information about API execution and client access to the API.
The developer can create a CloudWatch Logs log group, which is a collection of log streams that share the same retention, monitoring, and access control settings. The developer can specify the Amazon Resource Name (ARN) of the log group for the API stage, which instructs API Gateway to send the logs to the specified log group. The developer can then examine the logs to determine the cause of the HTTP 400 response errors. Option A is not optimal because it will create an Amazon Kinesis Data Firehose delivery stream to receive API call logs from API Gateway, which may introduce additional costs and complexity for delivering and processing streaming data. Option B is not optimal because it will turn on AWS CloudTrail Insights and create a trail, which is a feature that helps identify and troubleshoot unusual API activity or operational issues, not HTTP response errors. Option C is not optimal because it will turn on AWS X-Ray for the API stage, which is a service that helps analyze and debug distributed applications, not HTTP response errors.
References: [Setting Up CloudWatch Logging for a REST API], [CloudWatch Logs Concepts]
NEW QUESTION # 470
A company is migrating legacy internal applications to AWS. Leadership wants to rewrite the internal employee directory to use native AWS services. A developer needs to create a solution for storing employee contact details and high-resolution photos for use with the new application.
Which solution will enable the search and retrieval of each employee's individual details and high- resolution photos using AWS APIs?
Answer: C
Explanation:
Cognito is also an attractive option here but the problem is it doesn't have a built-in feature for photos and we would need S3.
NEW QUESTION # 471
A company has an application that receives batches of orders from partners every day. The application uses an AWS Lambda function to process the batches.
If a batch contains no orders, the Lambda function must publish to an Amazon SNS topic as soon as possible.
Which combination of steps will meet this requirement with the LEAST implementation effort? (Select TWO.)
Answer: B,D
Explanation:
The least implementation effort is to publish a custom CloudWatch metric from the existing Lambda function that records the number of orders in each batch, then create a CloudWatch alarm that sends a notification to the SNS topic when the metric value is 0. This avoids building a separate stream-processing pipeline or scheduled analytics job. A new Kinesis consumer and Lambda function would add unnecessary services and operational complexity. A 24-hour scheduled function is also slower than required because the notification must happen as soon as possible. Logging to Kinesis only creates more data movement and still requires separate analysis logic. CloudWatch supports custom metrics, and CloudWatch alarms can send notifications through Amazon SNS when metric thresholds are breached. ( AWS Documentation )
NEW QUESTION # 472
A team deploys an AWS CloudFormation template to update a stack that already included an Amazon DynamoDB table. However, before the deployment of the update, the team changed the name of the DynamoDB table on the template by mistake. The DeletionPolicy attribute for all resources has the default value.
What will be the result of this mistake?
Answer: C
NEW QUESTION # 473
A company's application has an AWS Lambda function that processes messages from IoT devices. The company wants to monitor the Lambda function to ensure that the Lambda function is meeting its required service level agreement (SLA).
A developer must implement a solution to determine the application's throughput in near real time. The throughput must be based on the number of messages that the Lambda function receives and processes in a given time period. The Lambda function performs initialization and post-processing steps that must not factor into the throughput measurement.
What should the developer do to meet these requirements?
Answer: A
Explanation:
Use the metrics to calculate the throughput. This is because custom metrics can provide a more accurate measure of throughput, as they can be configured to only increment when a message is received and processed by the Lambda function. This would exclude the time spent on initialization and post-processing, which are not part of the throughput measurement.
NEW QUESTION # 474
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