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Relevant AWS-DevOps Questions Exam 100% Pass | AWS-DevOps: AWS Certified DevOps Engineer - Professional

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Amazon AWS Certified DevOps Engineer - Professional Sample Questions (Q72-Q77):

NEW QUESTION # 72
You are building an AWS CloudFormation template for a multi-tier web application.
The user data of your Linux web server resource contains a complex script that can take a long time to run.
Which techniques could you use to ensure that these servers are fully configured and running before attaching them to the load balancer? Choose 2 answers

A. Add an AWS CloudFormation wait Condition that depends on the web server resource.
When the UserData script finishes on the web servers, use curl to signal to the Wait Condition pre-signed URL that they are ready.
B. Add an AWS CloudFormation Wait Condition that depends on the web server resource.
When the UserData script finishes on the web servers, use the command "cfn-signal" to signal that they are ready.
C. Add an AWS CloudFormation Wait Condition that depends on the web server resource.
When the UserData script finishes on the web servers, use curl to send a signal the Wait Condition at http://169.254.169.254/waithandle/.
D. In your AWS CloudFormation template, position the load balancer resource JSON block directly below your Linux server resource.
E. Launch your Linux servers from a nested stack that is called from within the load balancer resource in your AWS CloudFormation template.

Answer: A,B

NEW QUESTION # 73
A consulting company was hired to assess security vulnerabilities within a client company's application and propose a plan to remediate all identified issues. The architecture is identified as follows: Amazon S3 storage for content, an Auto Scaling group of Amazon EC2 instances behind an Elastic Load Balancer with attached Amazon EBS storage, and an Amazon RDS MySQL database. There are also several AWS Lambda functions that communicate directly with the RDS database using connection string statements in the code.
The consultants identified the top security threat as follows: the application is not meeting its requirement to have encryption at rest.
What solution will address this issue with the LEAST operational overhead and will provide monitoring for potential future violations?

A. Enable SSE encryption on the S3 buckets and RDS database. Enable OS-based encryption of data on EBS volumes. Configure Amazon Inspector agents on EC2 instances to report on insecure encryption ciphers. Set up AWS Config rules to periodically check for non-encrypted S3 objects.
B. Enable SSE encryption on the S3 buckets, EBS volumes, and the RDS database. Store RDS credentials in EC2 Parameter Store. Enable a policy on the S3 bucket to deny unencrypted puts. Set up AWS Config rules to periodically check for non-encrypted S3 objects and EBS volumes, and to ensure that RDS storage is encrypted.
C. Configure the application to encrypt each file prior to storing on Amazon S3. Enable OS-based encryption of data on EBS volumes. Encrypt data on write to RDS. Run cron jobs on each instance to check for encrypted data and notify via Amazon SNS. Use S3 Events to call an AWS Lambda function and verify if the file is encrypted.
D. Enable Secure Sockets Layer (SSL) on the load balancer, ensure that AWS Lambda is using SSL to communicate to the RDS database, and enable S3 encryption. Configure the application to force SSL for incoming connections and configure RDS to only grant access if the session is encrypted. Configure Amazon Inspector agents on EC2 instances to report on insecure encryption ciphers.

Answer: B

NEW QUESTION # 74
You are using AWS Elastic Beanstalk to deploy your application and must make data stored on an Amazon Elastic Block Store (EBS) volume snapshot available to the Amazon Elastic Compute Cloud (EC2) instances. How can you modify your Elastic Beanstalk environment so that the data is added to the Amazon EC2 instances every time you deploy your application?

A. Add commands to the Amazon EC2 user data that will be executed by eb-init, which uses the create- volume Amazon EC2 API or CLI to create a new Amazon EBS volume based on the specified snapshot, and then mounts the volume on launch.
B. Add commands to a configuration file in the .ebextensions folder of your deployable archive that mount an additional Amazon EBS volume on launch.
Also add a "BlockDeviceMappings" option, and specify the snapshot to use for the block device in the Auto Scaling launch configuration.
C. Add commands to the Chef recipe associated with your environment, use the create-volume Amazon EC2 API or CLI to create a new Amazon EBS volume based on the specified snapshot, and then mount the volume on launch.
D. Add commands to a configuration file in the .ebextensions folder of your deployable archive that uses the create-volume Amazon EC2 API or CLI to create a new ephemeral volume based on the specified snapshot and then mounts the volume on launch.

Answer: B

NEW QUESTION # 75
You have a set of EC2 instances hosted in AWS. You have created a role named DemoRole and assigned that role to a policy, but you are unable to use that role with an instance. Why is this the case.

A. You need to create an instance profile and associate it with that specific role.
B. You won't be able to use that role with an instance unless you also create a usergroup and associate it with that specific role.
C. You are not able to associate an 1AM role with an instance
C You won't be able to use that role with an instance unless you also create a user and associate it with that specific role

Answer: A

Explanation:
Explanation
An instance profile is a container for an 1AM role that you can use to pass role information to an CC2 instance when the instance starts.
Option B is invalid because you can associate a role with an instance
Option C and D are invalid because using users or user groups is not a pre-requisite For more information on instance profiles, please visit the link:
* http://docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_use_switch-role-ec2_instance-profiles.htmI

NEW QUESTION # 76
A gaming company adopted AWS Cloud Formation to automate load-testing of theirgames. They have created an AWS Cloud Formation template for each gaming environment and one for the load-testing stack. The load-testing stack creates an Amazon Relational Database Service (RDS) Postgres database and two web servers running on Amazon Elastic Compute Cloud (EC2) that send HTTP requests, measure response times, and write the results into the database. A test run usually takes between 15 and 30 minutes. Once the tests are done, the AWS Cloud Formation stacks are torn down immediately. The test results written to the Amazon RDS database must remain accessible for visualization and analysis.
Select possible solutions that allow access to the test results after the AWS Cloud Formation load -testing stack is deleted.
Choose 2 answers.

A. Define an update policy to prevent deletionof the Amazon RDS database after the AWS Cloud Formation stack is deleted.
B. Define a deletion policy of type Snapshotfor the Amazon RDS resource to assure that the RDS database can be restoredafter the AWS Cloud Formation stack is deleted.
C. Define a deletion policy of type Retain forthe Amazon RDS resource to assure that the RDS database is not deleted with theAWS Cloud Formation stack.
D. Defineautomated backups with a backup retention period of 30 days for the Amazon RDSdatabase and perform point-in-time recovery of the database after the AWS CloudFormation stack is deleted.
E. Define an Amazon RDS Read-Replica in theload-testing AWS Cloud Formation stack and define a dependency relation betweenmaster and replica via the Depends On attribute.

Answer: B,C

Explanation:
Explanation
With the Deletion Policy attribute you can preserve or (in some cases) backup a resource when its stack is deleted. You specify a DeletionPolicy attribute for each resource that you want to control. If a resource has no DeletionPolicy attribute, AWS Cloud Formation deletes the resource by default.
To keep a resource when its stack is deleted, specify Retain for that resource. You can use retain for any resource. For example, you can retain a nested stack, S3 bucket, or CC2 instance so that you can continue to use or modify those resources after you delete their stacks.
For more information on Deletion policy, please visit the below url
* http://docs.aws.amazon.com/AWSCIoudFormation/latest/UserGuide/aws-attribute-deletionpolicy.html

NEW QUESTION # 77
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