The AWS CIoudHSM service defines a resource known as a high-availability (HA) ,
which is a virtual partition that represents a group of partitions, typically distributed between several physical HSMs for high-availability.
Correct Answer:B
The AWS CIoudHSNI service defines a resource known as a high-availability (HA) partition group, which is a virtual partition that represents a group of partitions, typically distributed between several physical HSMs for high-availability.
Reference: http://docs.aws.amazon.com/cloudhsm/latest/userguide/configuring-ha.htmI
If I modify a DB Instance or the DB parameter group associated with the instance, should I reboot the instance for the changes to take effect?
Correct Answer:B
You are configuring your company's application to use Auto Scaling and need to move user state information. Which of the following AWS services provides a shared data store with durability and low latency?
Correct Answer:B
Reference: https://d36cz9buwruItt.cIoudfront.net/AWS_Overview.pdf (page 13, aws storage gateway)
In the context of AWS support, why must an EC2 instance be unreachable for 20 minutes rather than allowing customers to open tickets immediately?
Correct Answer:A
An EC2 instance must be unreachable for 20 minutes before opening a ticket, because most reachability issues are resolved by automated processes in less than 20 minutes and will not require any action on the part of the customer. If the instance is still unreachable after this time frame has passed, then you should open a case with support.
Reference: https://aws.amazon.com/premiumsupport/faqs/
A user is planning to launch a scalable web application. Which of the below mentioned options will not affect the latency of the application?
Correct Answer:C
In AWS, the instance size decides the I/O characteristics. The provisioned IOPS ensures higher throughput, and lower latency. The region does affect the latency; latency will always be less when the instance is near to the end user. Within a region the user uses any AZ and this does not affect the latency. The AZ is mainly for fault toleration or HA.
Reference: http://media.amazonwebservices.com/AWS_Security_Best_Practices.pdf