Following are some new Amazon AWS-Certified-DevOps-Engineer-Professional Real Exam Questions:
Question: 2
You have decided that you need to change the instance type of your production instances which are running as part of an AutoScaling group. The entire architecture is deployed using CloudFormation Template. You currently have 4 instances in Production. You cannot have any interruption in service and need to ensure 2 instances are always runningduring the update? Which of the options below listed can be used for this?
A. AutoScalingRollingUpdate
B. AutoScalingScheduledAction
C. AutoScalingReplacingUpdate
D. AutoScalinglntegrationUpdate
Explanation: The AWS::AutoScaling::AutoScalingGroup resource supports an UpdatePoIicy attribute. This is used to define how an Auto Scalinggroup resource is updated when an update to the Cloud Formation stack occurs. A common approach to updating an Auto Scaling group is to perform a rolling update, which is done by specifying the AutoScalingRollingUpdate policy. This retains the same Auto Scaling group and replaces old instances with new ones, according to the parameters specified. For more information on Autoscaling updates, please refer to the below link: https://aws.amazon.com/premiumsupport/knowledge-center/auto-scaling-group-rolling-updates/
Question: 6
You have just recently deployed an application on EC2 instances behind an ELB. After a couple of weeks, customers are complaining on receiving errorsfrom the application. You want to diagnose the errors and are trying to get errors from the ELB access logs. But the ELB access logs are empty. What is the reason for this.
A. You do not have the appropriate permissions to access the logs
B. You do not have your CloudWatch metrics correctly configured
C. ELB Access logs are only available for a maximum of oneweek.
D. Access logging is an optional feature of Elastic Load Balancing that is disabled bydefault
Explanation: Clastic Load Balancing provides access logs that capture detailed information about requests sent to your load balancer. Cach log contains information such as the time the request was received, the client's IP address, latencies, request paths, and server responses. You can use these access logs to analyze traffic patterns and to troubleshoot issues. Access logging is an optional feature of Elastic Load Balancing that is disabled by default. After you enable access logging for your load balancer. Clastic Load Balancing captures the logs and stores them in the Amazon S3 bucket that you specify. You can disable access logging at any time. For more information on CLB access logs, please refer to the below document link: from AWS http://docs.aws.amazon.com/elasticloadbalancing/latest/classic/access-log-collection. html
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