AWS-Certified-DevOps-Engineer-Professional Free Practice Test

A company is implementing a well-architected design for its globally accessible API stack. The design needs to ensure both high reliability and fast response times for users located in North America and Europe.
The API stack contains the following three tiers:
• Amazon API Gateway
• AWS Lambda
• Amazon DynamoDB
Which solution will meet the requirements?

1. A. Configure Amazon Route 53 to point to API Gateway APIs in North America and Europe using health check
2. B. Configure the APIs to forward requests to a Lambda function in that Regio
3. C. Configure the Lambda functions to retrieve and update the data in a DynamoDB table in the same Region as the Lambda function.
4. D. Configure Amazon Route 53 to point to API Gateway APIs in North America and Europe using latency-based routing and health check
5. E. Configure the APIs to forward requests to a Lambda function in that Regio
6. F. Configure the Lambda functions to retrieve and update the data in a DynamoDB global table.
7. G. Configure Amazon Route 53 to point to API Gateway in North America, create a disaster recovery API in Europe, and configure both APIs to forward requests to the Lambda functions in that Regio
8. H. Retrieve the data from a DynamoDB global tabl
9. I. Deploy a Lambda function to check the North America API health every 5 minute
10. J. In the event of a failure, update Route 53 to point to the disaster recovery API.
11. K. Configure Amazon Route 53 to point to API Gateway API in North America using latency-based routin
12. L. Configure the API to forward requests to the Lambda function in the Region nearest to the use
13. M. Configure the Lambda function to retrieve and update the data in a DynamoDB table.

Correct Answer: B

Which Auto Scaling process would be helpful when testing new instances before sending traffic to them, while still keeping them in your Auto Scaling Group?

1. A. Suspend the process AZ Rebalance
2. B. Suspend the process Health Check
3. C. Suspend the process Replace Unhealthy
4. D. Suspend the process AddToLoadBalancer

Correct Answer: D
If you suspend Ad dTo Load Balancer, Auto Scaling launches the instances but does not add them to the load balancer or target group. If you resume the AddTo Load Balancer process. Auto Scaling resumes adding instances to the load balancer or target group when they are launched. However, Auto Scaling does
not add the instances that were launched while this process was suspended. You must register those instances manually.
Option A is invalid because this just balances the number of CC2 instances in the group across the Availability Zones in the region
Option B is invalid because this just checks the health of the instances. Auto Scaling marks an instance as unhealthy if Amazon CC2 or Clastic Load Balancing tells
Auto Scaling that the instance is unhealthy.
Option C is invalid because this process just terminates instances that are marked as unhealthy and later creates new instances to replace them.
For more information on process suspension, please refer to the below document link: from AWS
http://docs.aws.amazon.com/autoscaling/latest/userguide/as-suspend-resume-processes.html

Fill the blanks: helps us track AWS API calls and transitions, helps to understand what resources we have now, and allows auditing credentials and logins.

1. A. AWS Config, CIoudTraiI, IAM Credential Reports
2. B. CIoudTraiI, IAM Credential Reports, AWS Config
3. C. CIoudTraiI, AWS Config, IAM Credential Reports
4. D. AWS Config, IAM Credential Reports, CIoudTraiI

Correct Answer: C
You can use AWS CIoudTraiI to get a history of AWS API calls and related events for your account. This includes calls made by using the AWS Management Console, AWS SDKs, command line tools, and higher-level AWS services.
Reference: http://docs.aws.amazon.com/awscloudtrail/latest/userguide/cloudtrail-user-guide.html

When thinking of DynamoDB, what are true of Local Secondary Key properties?

1. A. Either the partition key or the sort key can be different from the table, but not both.
2. B. Only the sort key can be different from the table.
3. C. The partition key and sort key can be different from the table.
4. D. Only the partition key can be different from the tabl

Correct Answer: B
Global secondary index — an index with a partition key and a sort key that can be different from those on the table. A global secondary index is considered "gIobaI" because queries on the index can span all of the data in a table, across all partitions.
Reference: http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Secondarylndexes.htmI

You are building a game high score table in DynamoDB. You will store each user's highest score for each game, with many games, all of which have relatively similar usage levels and numbers of players. You need to be able to look up the highest score for any game. What's the best DynamoDB key structure?

1. A. HighestScore as the hash / only key.
2. B. GameID as the hash key, HighestScore as the range key.
3. C. GameID as the hash / only key.
4. D. GameID as the range / only ke

Correct Answer: B
Since access and storage for games is uniform, and you need to have ordering within each game for the scores (to access the highest value), your hash (partition) key should be the GameID, and there should be a range key for HighestScore.
Reference: http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/GuideIinesForTabIes.htmI#GuideIi nesForTabIes.Partitions