Which of the following services can receive an alert from CloudWatch?
C
AWS Auto Scaling and Simple Notification Service (SNS) work in conjunction with CloudWatch.
CloudWatch can send alerts to the AS policy or to the SNS end points.
Reference:
http://docs.aws.amazon.com/AmazonCloudWatch/latest/DeveloperGuide/related_services.html
A user creates an Auto Scaling group from the Amazon AWS Console and assigned a tag with a key of "environment" and a value of "Prod". Can the user assign tags to instances launched in the Auto Scaling group, to organize and manage them?
B
You can organize and manage your Auto Scaling groups by assigning your own metadata to each group in the form of tags. You specify a key and a value for each tag. A key can be a general cate-gory, such as "project", "owner", or "environment", with specific associated values.
By default, the instance will have a tag with the key as "aws:autoscaling:groupName" and the value as the name of the group.
Reference:
http://docs.aws.amazon.com/AutoScaling/latest/DeveloperGuide/ASTagging.html
How many metrics are supported by CloudWatch for Auto Scaling?
A
AWS Auto Scaling supports both detailed as well as basic monitoring of the CloudWatch metrics.
Basic monitoring happens every 5 minutes, while detailed monitoring happens every minute. It sup-ports 8 metrics and 1 dimension.
The metrics are:
GroupMinSize -
GroupMaxSize -
GroupDesiredCapacity -
GroupInServiceInstances -
GroupPendingInstances -
GroupStandbyInstances -
GroupTerminatingInstances -
GroupTotalInstances -
The dimension is AutoScalingGroupName
Reference:
http://docs.aws.amazon.com/AmazonCloudWatch/latest/DeveloperGuide/supported_services.html
A user is aware that a huge download is occurring on his instance. He has already set the Auto Scal-ing policy to increase the instance count when the network I/
O increases beyond a certain limit. How can the user ensure that this temporary event does not result in scaling?
D
The user may want to stop the automated scaling processes on the Auto Scaling groups either to perform manual operations or during emergency situations. To perform this, the user can suspend one or more scaling processes at any time. Once it is completed, the user can resume all the suspend-ed processes.
Reference:
http://docs.aws.amazon.com/autoscaling/latest/userguide/as-suspend-resume-processes.html
In the 'Detailed' monitoring data available for your Amazon EBS volumes, Provisioned IOPS volumes automatically send _____ minute metrics to Amazon CloudWatch.
C
In the 'Detailed' monitoring data available for your Amazon EBS volumes, Provisioned IOPS vol-umes automatically send 1-minute metrics to Amazon
CloudWatch.
Reference:
http://docs.amazonwebservices.com/AWSEC2/latest/UserGuide/monitoring-volume-status.html
Which of the following is true of Amazon CloudWatch?
A
Amazon CloudWatch monitors your Amazon Web Services (AWS) resources and the applications you run on AWS in real-time.
You can use CloudWatch to collect and track metrics, which are variables you can measure for your resources and applications. CloudWatch alarms send notifications or automatically make changes to the resources you are monitoring based on rules that you define. For example, you can monitor the CPU usage and disk reads and writes of your Amazon EC2 instances and then use this data to de-termine whether you should launch additional instances to handle increased load. You can also use this data to stop under-used instances to save money. In addition to monitoring the built-in metrics that come with AWS, you can monitor your own custom metrics.
With CloudWatch, you gain system-wide visibility into resource utilization, application perfor-mance, and operational health.
Reference:
http://docs.aws.amazon.com/AmazonCloudWatch/latest/DeveloperGuide/WhatIsCloudWatch.html
What is the minimum duration when setting an alarm on a detailed monitoring metric in Cloud-Watch?
A
Statistics represents data aggregation of the metric data values over a specific period of time. The user can specify the start and end times that CloudWatch will use for the data aggregation of the statistics. The starting and ending points can be as close together as 60 seconds or as far apart as two weeks.
Reference:
http://docs.aws.amazon.com/AmazonCloudWatch/latest/DeveloperGuide/cloudwatch_concepts.html#Metric
In the AWS Storage Gateway, using the ____________, you can cost-effectively and durably ar-chive backup data in Amazon Glacier.
A
In AWS Storage Gateway, using Gateway virtual tape library (VTL), you can cost-effectively and durably store archive and long-term backup data in Amazon
Glacier. Gateway-VTL provides virtual tape infrastructure that scales seamlessly with your business needs and eliminates the operational burden of provisioning, scaling and maintaining a physical tape infrastructure.
Reference:
http://docs.aws.amazon.com/storagegateway/latest/userguide/WhatIsStorageGateway.html
What are the benefits of CloudTrail integration with CloudWatch Logs?
D
CloudTrail integration with CloudWatch Logs delivers API activity captured by CloudTrail to a CloudWatch Logs log stream in the CloudWatch Logs log group you specify.
Reference:
http://aws.amazon.com/cloudtrail/faqs/
Security groups in VPC operate at the ______.
C
You can secure your VPC instances using only security groups. When you launch an instance in a VPC, you can associate one or more security groups that you've created. The security groups act as a firewall for associated Amazon EC2 instances, controlling both inbound and outbound traffic at the instance level.
Reference:
http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/VPC_Security.html
