A user is enabling logging on a particular bucket. Which of the below mentioned options may be best suitable to allow access to the log bucket?
Correct Answer:D
The only recommended use case for the S3 bucket ACL is to grant the write permission to the Amazon S3 Log Delivery group to write access log objects to the user’s bucket.
Reference: http://docs.aws.amazon.com/AmazonS3/latest/dev/access-policy-alternatives-guidelines.html
AWS Elastic Beanstalk will change the health status of a web server environment tier to gray color when:
Correct Answer:D
AWS Elastic Beanstalk will change the health status of a web server environment tier to gray color when your appIication's health status is unknown (because status is reported when the application is not in the ready state).
Reference: http://docs.aws.amazon.com/elasticbeanstaIk/latest/dg/using-features.heaIthstatus.htmI
Regarding Amazon SWF, at times you might want to record information in the workflow history of a workflow execution that is specific to your use case. enable you to record information in the workflow execution history that you can use for any custom or scenario-specific purpose.
Correct Answer:A
In Amazon SWF, at times you might want to record information in the workflow history of a workflow execution that is specific to your use case. Markers enable you to record information in the workflow
execution history that you can use for any custom or scenario-specific purpose.
Reference: http://docs.aws.amazon.com/amazonswf/latest/developerguide/swf-dg-adv.html
A user is setting up an Elastic Load BaIancer(ELB). Which of the below parameters should the user consider so as the instance gets registered with the ELB?
Correct Answer:B
The EC2 instances are registered with the load balancer using the IP addresses associated with the instances. When an instance is stopped and then started, the IP address associated with the instance changes. This prevents the load balancer from routing traffic to the restarted instance. When the user stops and then starts registered EC2 instances, it is recommended that to de-register the stopped instance from load balancer, and then register the restarted instance. Failure to do so may prevent the load balancer from performing health checks and routing the traffic to the restarted instance.
An online gaming site asked you if you can deploy a database that is a fast, highly scalable NoSQL database service in AWS for a new site that he wants to build. Which database should you recommend?
Correct Answer:C
Amazon DynamoDB is ideal for database applications that require very low latency and predictable performance at any scale but don’t need complex querying capabilities like joins or transactions. Amazon DynamoDB is a fully-managed NoSQL database service that offers high performance, predictable throughput and low cost. It is easy to set up, operate, and scale.
With Amazon DynamoDB, you can start small, specify the throughput and storage you need, and easily scale your capacity requirements on the fly. Amazon DynamoDB automatically partitions data over a
number of servers to meet your request capacity. In addition, DynamoDB automatically replicates your data synchronously across multiple Availability Zones within an AWS Region to ensure high-availability and data durability.
Reference: https://aws.amazon.com/running_databases/#dynamodb_anchor