CLF-C01 Free Practice Test

What is the major difference between AWS's RDS and DynamoDB database services?
Choose the Correct Answer

1. A. RDS offers NoSQL database options, and DynamoDB offers SQL database options.
2. B. RDS offers on SQL database option, and DynamoDB offers many NoSQL database options.
3. C. RDS offers SQL database options, and DynamoDB offers a NoSQL database option.
4. D. None of the above

Correct Answer: C
RDS is a SQL database service (that offers several database engine options), and DynamoDB is a NoSQL database option that only offers one NoSQL engine.

Donna needs to provision a Linux server to run a web application on. What AWS service should she use to create the Linux server?
Choose the Correct Answer

1. A. VPC
2. B. Lambda
3. C. IAM
4. D. EC2

Correct Answer: D
Elastic Cloud Compute (EC2) is AWS server-based compute service platform. You can use it to provision and use Linux- and Windows-based servers.

David is managing a web application running on dozens of EC2 servers. He is worried that if something goes wrong with one of the servers he will not know about it in a timely manner. What solution could you offer to help him keep updated on the status of his servers?
Choose the Correct Answer

1. A. Configure each EC2 instance with a custom script to email David when any issues occur.
2. B. Configure RDS notifications based on CloudWatch EC2 metric alarms.
3. C. Enable CloudTrail to log and report any issues that occur with the EC2 instances.
4. D. Configure SNS notifications based on CloudWatch EC2 metric alarm

Correct Answer: D
CloudWatch is used to track metrics on all EC2 instances. Metric alarms can be configured to trigger SNS messages if something goes wrong.

Amit is running a web application with a capacity of 5000 users. Every few days, traffic reaches 5000 users and any additional users are being denied access. What can Amit do to efficiently automate the process of adding and removing server capacity based on traffic demand?
Choose the Correct Answer

1. A. Enable elastic load balancing on his application.
2. B. Automating this process cannot be done
3. C. Enable auto scaling on his application.
4. D. Write a custom script to automate the process

Correct Answer: C
Auto scaling in AWS allows you to configure metric-based rules that (when triggered) will add and/or remove instances (server capacity) to your application. Adding/moving instances is then automated based on the metric rules you configure.

Stephen is having issues tracking how much compute capacity his application is using. Ideally, he wants to track and have alarms for when CPU utilization goes over 70%. What should Stephen do to accomplish this?
Choose the Correct Answer

1. A. Configure an SNS topic with an alarm threshold set to trigger when CPU utilization is greater than 70%.
2. B. Configure a CloudWatch alarm with an alarm threshold set to trigger when CPU utilization is greater than 70%.
3. C. Configure a CloudWatch alarm with an alarm threshold set to trigger when CPU utilization is greater than or equal to 70%.
4. D. None of the abov

Correct Answer: B
The answer is to configure a CloudWatch alarm with an alarm threshold set to trigger when CPU utilization is greater than 70%. This will display the alarm in "alarm" state when CPU utilization is greater than 70%. This question has been worded very specifically with the works "goes above 70%". This disqualifies the answer that stated "great than or equal to 70%". The AWS exam will have very tricky questions like this.