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NEW QUESTION 42
By default, Amazon CloudTrail logs ____ actions defined by the CloudTrail ____ APIs.
- A. bucket-level; RESTful
- B. bucket-level; SDK
- C. object-level; SDK
- D. object-level; RESTful
Answer: A
Explanation:
By default, CloudTrail logs bucket-level actions. Amazon S3 records are written together with other AWS service records in a log file. Amazon S3 bucket-level actions supported for logging by CloudTrail are defined in its RESTful API.
Reference: http://docs.aws.amazon.com/AmazonS3/latest/dev/cloudtrail-logging.html
NEW QUESTION 43
What is the maximum supported single-volume throughput on EBS?
- A. 640MiB/s
- B. 160MiB/s
- C. 320MiB/s
- D. 40MiB/s
Answer: C
Explanation:
The ceiling throughput for PIOPS on EBS is 320MiB/s.
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/EBSVolumeTypes.html
NEW QUESTION 44
After conducting a disaster recovery exercise, an Enterprise Architect discovers that a large team of Database and Storage Administrators need more then seven hours of manual effort to make a flagship application's database functional in a different AWS Region. The Architect also discovers that the recovered database is often missing as much as two hours of data transactions. Which solution provides improved RTO and RPO in a cross-region failover scenario?
- A. Use Amazon RDS scheduled instance lifecycle events to create a snapshot and specify a frequency to match the RPO. Use Amazon RDS scheduled instance lifecycle event configuration to perform a cross- region snapshot copy into the failover region upon SnapshotCreateComplete events. Configure Amazon CloudWatch to alert when the CloudWatch RDS namespace CPUUtilization metric for the database instance falls to 0% and make a call to Amazon RDS to restore the database snapshot in the failover region.
- B. Create a scheduled Amazon CloudWatch Events rule to make a call to Amazon RDS to create a snapshot from a database instance and specify a frequency to match the RPO. Create an AWS Step Functions task to call Amazon RDS to perform a cross-region snapshot copy into the failover region, and configure the state machine to execute the task when the RDS snapshot create state is complete.
Create an SNS topic subscribed to RDS availability events, and push these messages to an Amazon SQS queue located in the failover region. Configure an Auto Scaling group of worker nodes to poll the queue for new messages and make a call to Amazon RDS to restore a database from a snapshot after a checksum on the cross-region copied snapshot returns valid. - C. Deploy an Amazon RDS Multi-AZ instance backed by a multi-region Amazon EFS. Configure the RDS option group to enable multi-region availability for native automation of cross-region recovery and continuous data replication. Create an Amazon SNS topic subscribed to RDS- impacted events to send emails to the Database Administration team when significant query Latency is detected in a single Availability Zone.
- D. Use Amazon SNS topics to receive published messages from Amazon RDS availability and backup events. Use AWS Lambda for three separate functions with calls to Amazon RDS to snapshot a database instance, create a cross-region snapshot copy, and restore an instance from a snapshot. Use a scheduled Amazon CloudWatch Events rule at a frequency matching the RPO to trigger the Lambda function to snapshot a database instance. Trigger the Lambda function to create a cross-region snapshot copy when the SNS topic for backup events receives a new message. Configure the Lambda function to restore an instance from a snapshot to trigger sending new messages published to the availability SNS topic.
Answer: D
Explanation:
https://aws.amazon.com/blogs/database/cross-region-automatic-disaster-recovery-on-amazon- rds-for-oracle-database-using-db-snapshots-and-aws-lambda/
NEW QUESTION 45
You are building a mobile app for consumers to post cat pictures online. You will be storing the images in AWS S3. You want to run the system very cheaply and simply. Which one of these options allows you to build a photo sharing application with the right authentication/authorization implementation.
- A. Use JWT or SAML compliant systems to build authorization policies. Users log in with a username and password, and are given a token they can use indefinitely to make calls against the photo infrastructure.
C Use AWS API Gateway with a constantly rotating API Key to allow access from the client-side.
Construct a custom build of the SDK and include S3 access in it. - B. Create an AWS oAuth Service Domain ad grant public signup and access to the domain. During setup, add at least one major social media site as a trusted Identity Provider for users.
- C. Build the application out using AWS Cognito and web identity federation to allow users to log in using Facebook or Google Accounts. Once they are logged in, the secret token passed to that user is used to directly access resources on AWS, like AWS S3. ^/
Answer: C
Explanation:
Explanation
Amazon Cognito lets you easily add user sign-up and sign-in and manage permissions for your mobile and web apps. You can create your own user directory within Amazon Cognito. You can also choose to authenticate users through social identity providers such as Facebook, Twitter, or Amazon; with SAML identity solutions; or by using your own identity system. In addition, Amazon Cognito enables you to save data locally on users' devices, allowing your applications to work even when the devices are offline. You can then synchronize data across users' devices so that their app experience remains consistent regardless of the device they use.
For more information on AWS Cognito, please visit the below URL:
* http://docs.aws.amazon.com/cognito/latest/developerguide/what-is-amazon-cognito.html
NEW QUESTION 46
What is the amount of time that Opswork stacks services waits for a response from an underlying instance before deeming it as a failed instance?
- A. Iminute.
- B. 20minutes.
- C. 60minutes
- D. 5minutes.
Answer: D
Explanation:
Explanation
The AWS Documentation mentions
Every instance has an AWS OpsWorks Stacks agent that communicates regularly with the service. AWS OpsWorks Stacks uses that communication to monitor instance health. If an agent does not communicate with the service for more than approximately five minutes, AWS OpsWorks Stacks considers the instance to have failed.
For more information on the Auto healing feature, please visit the below URL:
* http://docs.aws.amazon.com/opsworks/latest/userguide/workinginstances-autohealing.htm I
NEW QUESTION 47
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