Editing AWS SSA Sample exam questions

* https://d1.awsstatic.com/training-and-certification/docs-sa-assoc/AWS-Certified-Solutions-Architect-Associate_Sample-Questions.pdf


=== A customer relationship management (CRM) application runs on Amazon EC2 instances in multiple [[Availability Zones]] behind an [[Application Load Balancer]]. If one f these instances fails, what occurs?===
* A) The [[load balancer]] will stop sending requests to the failed instance.
* B) The load balancer will terminate the failed instance.
* C) The load balancer will automatically replace the failed instance.
* D) The load balancer will return [[504]] Gateway Timeout errors until the instance is replaced.

=== A company needs to perform asynchronous processing, and has [[Amazon SQS]] as part of a decoupled architecture. The company wants to ensure that the number of empty responses from polling requests are kept to a minimum. What should a solutions architect do to ensure that empty responses are reduced?===
* A) Increase the maximum message [[retention period]] for the [[queue]].
* B) Increase the maximum receives for the [[redrive]] policy for the queue.
* C) Increase the default visibility timeout for the queue.
* D) Increase the receive message wait time for the queue.

=== A company currently stores data for on-premises applications on local drives. The chief technology officer wants to reduce hardware costs by storing the data in Amazon S3 but does not want to make modifications to the applications. To minimize latency, frequently accessed data should be available locally. What is a reliable and durable solution for a solutions architect to implement that will reduce the cost of local storage? ===

* A) Deploy an SFTP client on a local server and transfer data to Amazon S3 using [[AWS Transfer]] for SFTP.
* B) Deploy an [[AWS Storage Gateway]] volume gateway configured in cached volume mode.
* C) Deploy an [[AWS DataSync]] agent on a local server and configure an S3 bucket as the destination.
* D) Deploy an AWS Storage Gateway volume gateway configured in stored volume mode.

===A company runs a public-facing three-tier web application in a VPC across multiple Availability Zones. Amazon EC2 instances for the application tier running in private subnets need to download software patches from the internet. However, the instances cannot be directly accessible from the internet. Which actions should be taken to allow the instances to download the needed patches (Select TWO.)===

* A) Configure a [[NAT]] gateway in a [[public subnet]].
* B) Define a custom route table with a route to the NAT gateway for internet traffic and associate it with the private subnets for the application tier.
* C) Assign [[Elastic IP]] addresses to the application instances.
* D) Define a custom route table with a route to the internet gateway for internet traffic and associate it with the private subnets for the application tier.
* E) Configure a [[NAT]] instance in a [[private subnet]].

=== A solutions architect wants to design a solution to save costs for Amazon EC2 instances that do not need to run during a 2-week company shutdown. The applications running on the instances store data in instance memory (RAM) that must be present when the instances resume operation. Which approach should the solutions architect recommend to shut down and resume the instances? ===

* A) Modify the application to store the data on instance store volumes. Reattach the volumes while restarting them.
* B) [[Snapshot]] the instances before stopping them. Restore the snapshot after restarting the instances.
* C) Run the applications on instances enabled for hibernation. Hibernate the instances before the shutdown.
* D) Note the Availability Zone for each instance before stopping it. Restart the instances in the same [[Availability Zones]] after the shutdown.

=== A company plans to run a monitoring application on an Amazon EC2 instance in a VPC. Connections are made to the instance using its private IPv4 address. A solutions architect needs to design a solution that will allow traffic to be quickly directed to a standby instance if the application fails and becomes unreachable. Which approach will meet these requirements? ===

* A) Deploy an [[Application Load Balancer]] configured with a listener for the private IP address and register the primary instance with the load balancer. Upon failure, de-register the instance and register the secondary instance.
* B) Configure a custom DHCP option set. Configure DHCP to assign the same private IP address to the secondary instance when the primary instance fails.
* C) Attach a secondary elastic network interface (ENI) to the instance configured with the private IP address. Move the ENI to the standby instance if the primary instance becomes unreachable.
* D) Associate an [[Elastic IP]] address with the network interface of the primary instance. Disassociate the Elastic IP from the primary instance upon failure and associate it with a secondary instance.

===10) A company uses Reserved Instances to run its data-processing workload. The nightly job typically takes 7 hours to run and must finish within a 10-hour time window. The company anticipates temporary increases in demand at the end of each month that will cause the job to run over the time limit with the capacity of the current resources. Once started, the processing job cannot be interrupted before completion. The company wants to implement a solution that would allow it to provide increased capacity as cost-effectively as possible. What should a solutions architect do to accomplish this?===

* a) Deploy On-Demand Instances during periods of high demand.
* b) Create a second Amazon EC2 reservation for additional instances.
* c) Deploy [[Spot Instances]] during periods of high demand.
* d) Increase the instance size of the instances in the [[Amazon EC2 reservation]] to support the increased workload.

== See also ==
* {{AWS certifications}}

[[Category:AWS]]