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Amazon AWS Certified DevOps Engineer - Professional Sample Questions (Q484-Q489):

NEW QUESTION # 484
You are designing an enterprise data storage system. Your data management software system requires mountable disks and a real filesystem, so you cannot use S3 for storage. You need persistence, so you will be using AWS EBS Volumes for your system. The system needs as low- cost storage as possible, and access is not frequent or high throughput, and is mostly sequential reads. Which is the most appropriate EBS Volume Type for this scenario?

A. gp2
B. io1
C. gp1
D. standard

Answer: D

Explanation:
standard volumes, or Magnetic volumes, are best for: Cold workloads where data is infrequently accessed, or scenarios where the lowest storage cost is important.
http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/EBSVolumeTypes.html

NEW QUESTION # 485
When thinking of AWS Elastic Beanstalk's model, which is true?

A. Applications have many environments, environments have many deployments.
B. Deployments have many environments, environments have many applications.
C. Applications have many deployments, deployments have many environments.
D. Environments have many applications, applications have many deployments.

Answer: A

Explanation:
Applications group logical services. Environments belong to Applications, and typically represent different deployment levels (dev, stage, prod, fo forth). Deployments belong to environments, and are pushes of bundles of code for the environments to run.
http://docs.aws.amazon.com/elasticbeanstalk/latest/dg/Welcome.html

NEW QUESTION # 486
When thinking of AWS OpsWorks, which of the following is not an instance type you can allocate in a stack layer?

A. Load-based instances
B. Time-based instances
C. 24/7 instances
D. Spot instances

Answer: D

Explanation:
AWS OpsWorks supports the following instance types, which are characterized by how they are started and stopped. 24/7 instances are started manually and run until you stop them.Time-based instances are run by AWS OpsWorks on a specified daily and weekly schedule. They allow your stack to automatically adjust the number of instances to accommodate predictable usage patterns. Load-based instances are automatically started and stopped by AWS OpsWorks, based on specified load metrics, such as CPU utilization. They allow your stack to automatically adjust the number of instances to accommodate variations in incoming traffic. Load-based instances are available only for Linux-based stacks.
http://docs.aws.amazon.com/opsworks/latest/userguide/welcome.html

NEW QUESTION # 487
You have defined a Linux based instance stack in Opswork. You now want to attach a database to the
Opswork stack. Which of the below is an important step to ensure that the application on the Linux instances
can communicate with the database

A. ConfigureSSL so that the instance can communicate with the database
B. Addthe appropriate driver packages to ensure the application can work with thedatabase
C. Addanother stack with the database layer and attach it to the application stack.
D. ConfigureSSL so that the instance can communicate with the database
E. Addthe appropriate driver packages to ensure the application can work with thedatabase
F. Configuredatabase tags for the Opswork application layerOpswork application layer
G. Addanother stack with the database layer and attach it to the application stack.
H. Configuredatabase tags for theYou have defined a Linux based instance stack in Opswork. You now
want to attach a database to the Opswork stack. Which of the below is an important step to ensure that
the application on the Linux instances can communicate with the database

Answer: E

Explanation:
Explanation
The AWS documentation mentions the below point
Important
For Linux stacks, if you want to associate an Amazon RDS service layer with your app, you must add the
appropriate driver package to the associated app server layer,
as follows:
1. Click Layers in the navigation pane and open the app server's Recipes tab.
2. Click Edit and add the appropriate driver package to OS Packages. For example, you should specify mysql
if the layer contains Amazon Linux instances and mysql-client if the layer contains Ubuntu instances.
3. Save the changes and redeploy the app.
For
more information on Opswork app connectivity, please visit the below URL: http://docs.aws.a
mazon.com/opsworks/latest/userguide/workingapps-connectdb. htm I

NEW QUESTION # 488
A company that runs many workloads on AWS has an Amazon EBS spend that has increased over time. The DevOps team notices there are many unattached EBS volumes. Although there are workloads where volumes are detached, volumes over 14 days old are stale and no longer needed. A DevOps engineer has been tasked with creating automation that deletes unattached EBS volumes that have been unattached for 14 days.
Which solution will accomplish this?

A. Create an Amazon CloudWatch Events rule to execute an AWS Lambda function daily. The Lambda function should find unattached EBS volumes and tag them with the current date, and delete unattached volumes that have tags with dates that are more than 14 days old.
B. Configure the AWS Config ec2-vo!ume-inuse-check managed rule with a configuration changes trigger type and an Amazon EC2 volume resource target. Create a new Amazon CloudWatch Events rule scheduled to execute an AWS Lambda function in 14 days to delete the specified EBS volume.
C. Use Amazon EC2 and Amazon Data Lifecycle Manager to configure a volume lifecycle policy. Set the interval period for unattached EBS volumes to 14 days and set the retention rule to delete. Set the policy target volumes as
D. Use AWS Trusted Advisor to detect EBS volumes that have been detached for more than 14 days. Execute an AWS Lambda function that creates a snapshot and then deletes the EBS volume.

Answer: D

NEW QUESTION # 489
......

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