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Q153. - (Topic 3)
A user is collecting 1000 records per second. The user wants to send the data to CloudWatch using the custom namespace. Which of the below mentioned options is recommended for this activity?
A. Aggregate the data with statistics, such as Min, max, Average, Sum and Sample data and send the data to CloudWatch
B. Send all the data values to CloudWatch in a single command by separating them with a comma. CloudWatch will parse automatically
C. Create one csv file of all the data and send a single file to CloudWatch
D. It is not possible to send all the data in one call. Thus, it should be sent one by one. CloudWatch will aggregate the data automatically
Answer: A
Explanation:
AWS CloudWatch supports the custom metrics. The user can always capture the custom data and upload the data to CloudWatch using CLI or APIs. The user can publish data to CloudWatch as single data points or as an aggregated set of data points called a statistic set using the command put-metric-data. It is recommended that when the user is having multiple data points per minute, he should aggregate the data so that it will minimize the number of calls to put-metric-data. In this case it will be single call to CloudWatch instead of 1000 calls if the data is aggregated.
Q154. - (Topic 1)
An application that you are managing has EC2 instances & Dynamo OB tables deployed to several AWS Regions In order to monitor the performance of the application globally, you would like to see two graphs 1) Avg CPU Utilization across all EC2 instances and 2) Number of Throttled Requests for all DynamoDB tables.
How can you accomplish this?
A. Tag your resources with the application name, and select the tag name as the dimension in the Cloudwatch Management console to view the respective graphs
B. Use the Cloud Watch CLI tools to pull the respective metrics from each regional endpoint Aggregate the data offline & store it for graphing in CloudWatch.
C. Add SNMP traps to each instance and DynamoDB table Leverage a central monitoring server to capture data from each instance and table Put the aggregate data into Cloud Watch for graphing.
D. Add a CloudWatch agent to each instance and attach one to each DynamoDB table. When configuring the agent set the appropriate application name & view the graphs in CloudWatch.
Answer: C
Q155. - (Topic 2)
A user is checking the CloudWatch metrics from the AWS console. The user notices that the CloudWatch data is coming in UTC. The user wants to convert the data to a local time zone. How can the user perform this?
A. In the CloudWatch dashboard the user should set the local timezone so that CloudWatch shows the data only in the local time zone
B. In the CloudWatch console select the local timezone under the Time Range tab to view the data as per the local timezone
C. The CloudWatch data is always in UTC; the user has to manually convert the data
D. The user should have send the local timezone while uploading the data so that CloudWatch will show the data only in the local timezone
Answer: B
Explanation:
If the user is viewing the data inside the CloudWatch console, the console provides options to filter values either using the relative period, such as days/hours or using the Absolute tab where the user can provide data with a specific date and time. The console also provides the option to search using the local timezone under the time range caption in the console because the time range tab allows the user to change the time zone.
Q156. - (Topic 3)
A .NET application that you manage is running in Elastic Beanstalk. Your developers tell you they will need access to application log files to debug issues that arise. The infrastructure will scale up and down.
How can you ensure the developers will be able to access only the log files?
A. Access the log files directly from Elastic Beanstalk
B. Enable log file rotation to S3 within the Elastic Beanstalk configuration
C. Ask your developers to enable log file rotation in the applications web.config file
D. Connect to each Instance launched by Elastic Beanstalk and create a Windows Scheduled task to rotate the log files to S3.
Answer: D
Explanation: Reference:
http://docs.aws.amazon.com/elasticbeanstalk/latest/dg/using-features.loggingS3.title.html
Q157. - (Topic 3)
A user is running a batch process on EBS backed EC2 instances. The batch process starts a few instances to process hadoop Map reduce jobs which can run between 50 – 600 minutes or sometimes for more time. The user wants to configure that the instance gets terminated only when the process is completed. How can the user configure this with CloudWatch?
A. Setup the CloudWatch action to terminate the instance when the CPU utilization is less than 5%
B. Setup the CloudWatch with Auto Scaling to terminate all the instances
C. Setup a job which terminates all instances after 600 minutes
D. It is not possible to terminate instances automatically
Answer: D
Explanation:
Amazon CloudWatch alarm watches a single metric over a time period that the user specifies and performs one or more actions based on the value of the metric relative to a given threshold over a number of time periods. The user can setup an action which terminates the instances when their CPU utilization is below a certain threshold for a certain period of time. The EC2 action can either terminate or stop the instance as part of the EC2 action.
Q158. - (Topic 1)
Your team Is excited about the use of AWS because now they have access to programmable Infrastructure" You have been asked to manage your AWS infrastructure In a manner similar to the way you might manage application code You want to be able to deploy exact copies of different versions of your infrastructure, stage changes into different environments, revert back to previous versions, and identify what versions are running at any particular time (development test QA. production).
Which approach addresses this requirement?
A. Use cost allocation reports and AWS Opsworks to deploy and manage your infrastructure.
B. Use AWS CloudWatch metrics and alerts along with resource tagging to deploy and manage your infrastructure.
C. Use AWS Beanstalk and a version control system like GIT to deploy and manage your infrastructure.
D. Use AWS CloudFormation and a version control system like GIT to deploy and manage your infrastructure.
Answer: B
Explanation: Reference:
http://aws.amazon.com/opsworks/faqs/
Q159. - (Topic 3)
A user is trying to understand the CloudWatch metrics for the AWS services. It is required that the user should first understand the namespace for the AWS services. Which of the below mentioned is not a valid namespace for the AWS services?
A. AWS/StorageGateway
B. AWS/CloudTrail
C. AWS/ElastiCache
D. AWS/SWF
Answer: B
Explanation:
Amazon CloudWatch is basically a metrics repository. The AWS product puts metrics into this repository, and the user can retrieve the data or statistics based on those metrics. To distinguish the data for each service, the CloudWatch metric has a namespace. Namespaces are containers for metrics. All AWS services that provide the Amazon CloudWatch data use a namespace string, beginning with "AWS/". All the services which are supported by CloudWatch will have some namespace. CloudWatch does not monitor CloudTrail. Thus, the namespace “AWS/CloudTrail” is incorrect.
Q160. - (Topic 1)
You are currently hosting multiple applications in a VPC and have logged numerous port scans coming in from a specific IP address block. Your security team has requested that all access from the offending IP address block be denied for the next 24 hours.
Which of the following is the best method to quickly and temporarily deny access from the specified IP address block?
A. Create an AD policy to modify Windows Firewall settings on all hosts in the VPC to deny access from the IP address block
B. Modify the Network ACLs associated with all public subnets in the VPC to deny access from the IP address block
C. Add a rule to all of the VPC 5 Security Groups to deny access from the IP address block
D. Modify the Windows Firewall settings on all Amazon Machine Images (AMIs) that your organization uses in that VPC to deny access from the IP address block
Answer: B
Explanation: Reference:
http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/VPC_SecurityGroups.html