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Amazon AWS Certified DevOps Engineer - Professional Sample Questions (Q160-Q165):
NEW QUESTION # 160
Which of these is not a reason a Multi-AZ RDS instance will failover?
- A. To autoscale to a higher instance class
- B. An Availability Zone outage
- C. A manual failover of the DB instance was initiated using Reboot with failover
- D. The primary DB instance fails
Answer: A
Explanation:
The primary DB instance switches over automatically to the standby replica if any of the > following conditions occur: An Availability Zone outage, the primary DB instance fails, the DB instance's server type is changed, the operating system of the DB instance is, undergoing software patching, a manual failover of the DB instance was initiated using Reboot with failover
http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Concepts.MultiAZ.html
NEW QUESTION # 161
A DevOps Engineer manages a web application that runs on Amazon EC2 instances behind an Application Load Balancer (ALB). The instances run in an EC2 Auto Scaling group across multiple Availability Zones. The Engineer needs to implement a deployment strategy that:
* Launches a second fleet of instances with the same capacity as the original fleet.
* Maintains the original fleet unchanged while the second fleet is launched.
* Transitions traffic to the second fleet when the second fleet is fully deployed.
* Terminates the original fleet automatically 1 hour after transition.
Which solution will satisfy these requirements?
- A. Use AWS CodeDeploy with a deployment group configured with a blue/green deployment configuration.
Select the option Terminate the original instances in the deployment group with a waiting period of 1 hour. - B. Use AWS Elastic Beanstalk with the configuration set to Immutable. Create an .ebextension using the Resources key that sets the deletion policy of the ALB to 1 hour, and deploy the application.
- C. Use two AWS Elastic Beanstalk environments to perform a blue/green deployment from the original environment to the new one. Create an application version lifecycle policy to terminate the original environment in 1 hour.
- D. Use an AWS CloudFormation template with a retention policy for the ALB set to 1 hour. Update the Amazon Route 53 record to reflect the new ALB.
Answer: C
NEW QUESTION # 162
You have a set of EC2 Instances running behind an ELB. These EC2 Instances are launched via an
Autoscaling Group. There is a requirement to ensure that the logs from the server are stored in a durable
storage layer. This is so that log data can be analyzed by staff in the future. Which of the following steps can
be implemented to ensure this requirement is fulfilled. Choose 2 answers from the options given below
- A. Onthe web servers, create a scheduled task that executes a script to rotate andtransmit the logs to an
Amazon S3 bucket. */ - B. UseAWS Data Pipeline to move log data from the Amazon S3 bucket to Amazon Redshiftin order to
process and run reports V - C. UseAWS Data Pipeline to move log data from the Amazon S3 bucket to Amazon SQS inorder to
process and run reports - D. Onthe web servers, create a scheduled task that executes a script to rotate andtransmit the logs to
Amazon Glacier.
Answer: A,B
Explanation:
Explanation
Amazon S3 is the perfect option for durable storage. The AWS Documentation mentions the following on S3
Storage
Amazon Simple Storage Service (Amazon S3) makes it simple and practical to collect, store, and analyze data
- regardless of format - all at massive scale. S3 is object
storage built to store and retrieve any amount of data from anywhere - web sites and mobile apps, corporate
applications, and data from loT sensors or devices.
For more information on Amazon S3, please refer to the below URL:
* https://aws.amazon.com/s3/
Amazon Redshift is a fast, fully managed data warehouse that makes it simple and cost-effective to analyze all
your data using standard SQL and your existing Business Intelligence (Bl) tools. It allows you to run complex
analytic queries against petabytes of structured data, using sophisticated query optimization, columnar storage
on high-performance local disks, and massively parallel query execution. Most results come back in seconds.
For more information on Amazon Redshift, please refer to the below URL:
* https://aws.amazon.com/redshift/
NEW QUESTION # 163
A company requires an RPO of 2 hours and an RTP of 10 minutes for its data and application at all times. An application uses a MySQL database and Amazon EC2 web servers. The development team needs a strategy for failover and disaster recovery.
Which combination of deployment strategies will meet these requirements? (Choose two.)
- A. Create an Amazon Aurora cluster in one Availability Zone across multiple Regions as the data store. Use Aurora's automatic recovery capabilities in the event of a disaster.
- B. Create an Amazon Aurora global database in two Regions as the data store. In the event of a failure, promote the secondary Region as the master for the application.
- C. Set up the application in two Regions and use Amazon Route 53 failover-based routing that points to the Application Load Balancers in both Regions. Use health checks to determine the availability in a given Region. Use Auto Scaling groups in each Region to adjust capacity based on demand.
- D. Set up the application in two Regions and use a multi-Region Auto Scaling group behind Application Load Balancers to manage the capacity based on demand. In the event of a disaster, adjust the Auto Scaling group's desired instance count to increase baseline capacity in the failover Region.
- E. Create an Amazon Aurora multi-master cluster across multiple Regions as the data store. Use a Network Load Balancer to balance the database traffic in different Regions.
Answer: B,D
Explanation:
Explanation
NEW QUESTION # 164
The operations team and the development team want a single place to view both operating system and application logs. How should you implement this using A WS services? Choose two from the options below
- A. Using AWS CloudFormation, merge the application logs with the operating system logs, and use 1AM Roles to allow both teams to have access to view console output from Amazon EC2.
- B. Using configuration management, set up remote logging to send events to Amazon Kinesis and insert these into Amazon CloudSearch or Amazon Redshift, depending on available analytic tools.
- C. Using AWS CloudFormation and configuration management, set up remote logging to send events via UDP packets to CloudTrail.
- D. Using AWS CloudFormation, create a Cloud Watch Logs LogGroup and send the operating system and application logs of interest using the Cloud Watch Logs Agent.
Answer: B,D
Explanation:
Explanation
Option B is invalid because Cloudtrail is not designed specifically to take in UDP packets Option D is invalid because there are already Cloudwatch logs available, so there is no need to have specific logs designed for this.
You can use Amazon CloudWatch Logs to monitor, store, and access your log files from Amazon Elastic Compute Cloud (Amazon L~C2) instances, AWS CloudTrail, and other sources. You can then retrieve the associated log data from CloudWatch Logs.
For more information on Cloudwatch logs please refer to the below link:
* http://docs