Amazon CLF-C01 Practice Test - Questions Answers, Page 59
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A developer is writing an application to analyze the traffic to a fleet of Amazon EC2 instances. The EC2 instances run behind a public Application Load Balancer (ALB) An HTTP server runs on each of the EC2 instances, logging all requests to a log file.
The developer wants to capture the client public IP addresses. The developer analyzes the log files and notices only the IP address of the ALB What must the developer do to capture the client public IP addresses in the log file?
A developer is writing an application in Python. The application runs on AWS Lambd a. The application generates a file and needs to upload this file to Amazon S3. The developer must implement this upload functionality with the least possible change to the application code Which solution meets these requirements?
A company's ecommerce website is experiencing sudden and significant traffic changes that are causing performance problems in the company database. Users report that attempts to access the website are taking too long. A developer needs to implement a caching layer by using Amazon ElastiCache. The website must be responsive, no matter which product a user views Updates to product information and prices must be strongly consistent.
Which cache-writing strategy will meet these requirements?
A developer needs to migrate an application from on premises to AWS. The application is written m PHP, uses a MySQL database, and has a small number of users. The application receives a significant load for 1 week each month The developer must minimize the cost of migrating and running the application Which solution will meet these requirements?
An application runs on multiple EC2 instances behind an ELB.
Where is the session data best written so that it can be served reliably across multiple requests?
A company is developing a report implemented using AWS Step Functions. Amazon CloudWatch shows errors in the Step Functions task state machine. To troubleshoot each task the state input needs to be included along with the error message in the state output.
Which coding practice can preserve both the original input and the error for the state?
A company is building an application for stock trading. The application needs sub-millisecond latency for processing trade requests. The company uses Amazon DynamoDB to store all the trading data that is used to process each trading request A development team performs load testing on the application and finds that the data retrieval time is higher than expected. The development team needs a solution that reduces the data retrieval time with the least possible effort Which solution meets these requirements?
A static website is hosted in an Amazon S3 bucket Several HTML pages on the site use JavaScript to download images from another Amazon S3 bucket These images are not displayed when users browse the site. What is the possible cause for the issue?
A developer creates an AWS Lambda function to publish a message to an Amazon Simple Notification Service (Amazon SNS) topic All message content must be encrypted in transit and at rest between Lambda and Amazon SNS. A part of the Lambda execution role is as follows:
Which combination of steps should the developer take to meet these requirements'? (Select TWO.)
A developer needs to use the AWS CLI on an on-premises development server temporarily to access AWS services while performing maintenance. The developer needs to authenticate to AWS with their identity for several hours. What is the MOST secure way to call AWS CLI commands with the developer's IAM identity?
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