In AWS Storage Gateway, Gateway-cached volumes allow you to retain ________________.
D
You store your data in Amazon S3 and retain a copy of frequently accessed data subsets locally.
Gateway-cached volumes offer a substantial cost savings on primary storage and minimize the need to scale your storage on-premises. You also retain low- latency access to your frequently accessed data.
Reference:
http://docs.aws.amazon.com/storagegateway/latest/userguide/WhatIsStorageGateway.html
Which of the following states is not possible for the CloudWatch alarm?
A
An alarm has three possible states:
OK--The metric is within the defined threshold
ALARM--The metric is outside of the defined threshold
INSUFFICIENT_DATA--The alarm has just started, the metric is not available, or not enough data is available for the metric to determine the alarm state
Reference:
http://docs.aws.amazon.com/AmazonCloudWatch/latest/DeveloperGuide/AlarmThatSendsEmail.html
What is the default maximum number of VPCs allowed per region?
A
The maximum number of VPCs allowed per region is 5. The limit for Internet gateways per region is directly correlated to this one. Increasing this limit will increase the limit on Internet gateways per region by the same amount.
Reference:
http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/VPC_Appendix_Limits.html
How often is metric data is sent to CloudWatch when detailed monitoring is enabled on an Amazon EC2 instance?
D
By default, Amazon EC2 metric data is automatically sent to CloudWatch in 5-minute periods.
However, you can, enable detailed monitoring on an Amazon EC2 instance, which sends data to CloudWatch in 1-minute periods
Reference:
http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-cloudwatch.html
A route table in VPC can be associated with multiple subnets. However, a subnet can be associated with only ______ route table(s) at a time.
D
Every subnet in your VPC must be associated with exactly one route table at a time. However, the same route table can be associated with multiple subnets.
Reference:
http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/VPC_Route_Tables.html
Which of the following statements is NOT true of CloudWatch?
D
AWS Cloudwatch can be accessed from the Amazon CloudWatch Console, CloudWatch API, AWS CLI and AWS SDKs.
Reference:
http://docs.aws.amazon.com/AmazonCloudWatch/latest/DeveloperGuide/accessing_cloudwatch.html
Which of the following is an incorrect statement about Amazon CloudWatch?
C
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 the variables you want to 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 Elastic Compute Cloud (Ama-zon EC2) instances and then use this data to determine whether you should launch additional in-stances 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 performance, and operational health.
Reference:
http://docs.aws.amazon.com/AmazonCloudWatch/latest/DeveloperGuide/WhatIsCloudWatch.html
Which of the following terms is NOT a key CloudWatch concept?
D
The terminology and concepts that are central to one's understanding and use of Amazon Cloud-Watch are as follows: metrics, namespaces, dimensions, timestamps, units, statistics, periods, aggre-gation, alarms, and regions.
Reference:
http://docs.aws.amazon.com/AmazonCloudWatch/latest/DeveloperGuide/cloudwatch_concepts.html
Network ACLs in a VPC operate at the ______.
C
Security Groups in VPC operate at the instance level, providing a way to control the incoming and outgoing instance traffic. In contrast, network ACLs operate at the subnet level, providing a way to control the traffic that flows through the subnets of your VPC.
Reference:
http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/VPC_Security.html
Your VPC automatically comes with a modifiable default network ACL, which by default _____.
C
Your VPC automatically comes with a modifiable default network ACL. By default, it allows all inbound and outbound traffic.
Reference:
http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/VPC_ACLs.html
