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AWS-DevOps-Engineer-Professional関連試験、AWS-DevOps-Engineer-Professional関連日本語内容
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AWS-DevOps-Engineer-Professional関連日本語内容 & AWS-DevOps-Engineer-Professional出題範囲
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Amazon AWS Certified DevOps Engineer - Professional 認定 AWS-DevOps-Engineer-Professional 試験問題 (Q572-Q577):
質問 # 572
You currently have an Autoscalinggroup that has the following settings
Min capacity-2
Desired capacity - 2
Maximum capacity - 4
The current number of instances running in the Autoscaling Group is 2. You have been notified that for a duration of an hour, you need to ensure that no new instances are launched by the Autoscaling Group Which of the below 2 actions can be carried out to fulfil this requirement
- A. Change the Maximum capacity to 2
- B. Change the Desired capacity to 4
- C. Suspend the Launch process of the Autoscaling Group
- D. Change the Minimum capacity to 2
正解:A、C
解説:
Explanation
You can temporarily suspend the creation of new instances by either reducing the Maximum capacity to 2, so that the current instances running which is 2, matches the maximum limit.
Secondly you can suspend the launch process of the Autoscaling Group
The AWS Documentation mentions
Scaling Processes
Amazon CC2 Auto Scaling supports the following scaling processes:
Launch Adds a new CC2 instance to the group, increasing its capacity. Warning If you suspend Launch, this disrupts other processes. For example, you can't return an instance in a standby state to service if the Launch process is suspended, because the group can't scale. For more information on Autoscaling Suspend and Resume, please visit the below URL:
http://docs.aws.amazon.com/autoscaling/latest/userguide/as-suspend-resume-processes.html
質問 # 573
A root account has created an IAM group and defined the policy as:
What will this policy do?
- A. Allow this group to view the password policy of all the users added only to that group
- B. Allow this group to view the password policy of all the IAM users
- C. Allow all the users of IAM to modify their password
- D. Allow an IAM user in this group to view the password policy and modify only his/her password
正解:D
解説:
This IAM policy grants access to the ChangePassword action, which lets the users use the console, the CLI, or the API to change their passwords. The Resource element uses a policy variable (aws:username), which is useful in policies that are attached to groups. The aws:username key resolves to the name of the current IAM user when a request is made, so that each user is allowed permission to change only his or her own password
. This policy will allow all the users of this group to modify the passwords of all the IAM users.
Reference:
http://docs.aws.amazon.com/IAM/latest/UserGuide/HowToPwdIAMUser.html
質問 # 574
After reviewing the last quarter's monthly bills, management has noticed an increase in the overall bill from
Amazon. After researching this increase in cost, you discovered that one of your new services is doing a lot of
GET Bucket API calls to Amazon S3 to build a metadata cache of all objects in the applications bucket. Your
boss has asked you to come up with a new cost-effective way to help reduce the amount of these new GET
Bucket API calls. What process should you use to help mitigate the cost?
- A. Update your Amazon S3 buckets' lifecycle policies to automatically push a list of objects to a new
bucket, and use this list to view objects associated with the application's bucket. - B. Create a new DynamoDB table. Use the new DynamoDB table to store all metadata about all objects
uploaded to Amazon S3. Any time a new object is uploaded, update the application's internal Amazon
S3 object metadata cache from DynamoDB.
C Using Amazon SNS, create a notification on any new Amazon S3 objects that automatical ly updates
a new DynamoDB table to store all
metadata about the new object. Subscribe the application to the Amazon SNS topic to update its internal
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