Free AWS-Solution-Architect-Associate Exam Dumps

Question 276

A web company is looking to implement an external payment service into their highly available application deployed in a VPC Their application EC2 instances are behind a public lacing ELB Auto scaling is used to add additional instances as traffic increases under normal load the application runs 2 instances in the
Auto Scaling group but at peak it can scale 3x in size. The application instances need to communicate with the payment service over the Internet which requires whitelisting of all public IP addresses used to communicate with it. A maximum of 4 whitelisting IP addresses are allowed at a time and can be added through an API.
How should they architect their solution?

A. Route payment requests through two NAT instances setup for High Availability and whitelist the Elastic IP addresses attached to the MAT instances.
B. Whitelist the VPC Internet Gateway Public IP and route payment requests through the Internet Gateway.
C. Whitelist the ELB IP addresses and route payment requests from the Application servers through the ELB.
D. Automatically assign public IP addresses to the application instances in the Auto Scaling group and run a script on boot that adds each instances public IP address to the payment validation whitelist API.

Correct Answer:D

Question 277

My Read Replica appears "stuck" after a MuIti-AZ failover and is unable to obtain or apply updates from the source DB Instance. What do I do?

A. You will need to delete the Read Replica and create a new one to rep lace it.
B. You will need to disassociate the DB Engine and re associate it.
C. The instance should be deployed to Single AZ and then moved to MuIti- AZ once again
D. You will need to delete the DB Instance and create a new one to replace i

Correct Answer:A

Question 278

After deciding that EMR will be useful in analysing vast amounts of data for a gaming website that you are architecting you have just deployed an Amazon EMR Cluster and wish to monitor the cluster performance. Which of the following tools cannot be used to monitor the cluster performance?

A. Kinesis
B. Ganglia
C. C|oudWatch Metrics
D. Hadoop Web Interfaces

Correct Answer:A
Amazon EMR provides several tools to monitor the performance of your cluster. Hadoop Web Interfaces
Every cluster publishes a set of web interfaces on the master node that contain information about the cluster. You can access these web pages by using an SSH tunnel to connect them on the master node. For more information, see View Web Interfaces Hosted on Amazon EMR Clusters.
CIoudWatch Metrics
Every cluster reports metrics to CIoudWatch. CIoudWatch is a web service that tracks metrics, and which you can use to set alarms on those metrics. For more information, see Monitor Metrics with CIoudWatch. Ganglia
Ganglia is a cluster monitoring tool. To have this available, you have to install Ganglia on the cluster when you launch it. After you've done so, you can monitor the cluster as it runs by using an SSH tunnel to connect to the Ganglia UI running on the master node. For more information, see Monitor Performance with Ganglia.
Reference:
http://docs.aws.amazon.com/EIasticMapReduce/latest/DeveIoperGuide/emr-troubleshoot-tooIs.htmI

Question 279

A read only news reporting site with a combined web and application tier and a database tier that receives large and unpredictable traffic demands must be able to respond to these traffic fluctuations automatically. What AWS services should be used meet these requirements?

A. Stateless instances for the web and application tier synchronized using Elasticache Memcached in an autoscaimg group monitored with CIoudWatc
B. And RDSwith read replicas.
C. Stateful instances for the web and application tier in an autoscaling group monitored with CIoudWatch and RDS with read replicas.
D. Stateful instances for the web and application tier in an autoscaling group monitored with CIoudWatc
E. And multi-AZ RDS.
F. Stateless instances for the web and application tier synchronized using EIastiCache Memcached in an autoscaling group monitored with CIoudWatch and multi-AZ RDS.

Correct Answer:A

Question 280

A company needs to deploy virtual desktops to its customers in a virtual private cloud, leveraging existing security controls. Which set of AWS services and features will meet the company's requirements?

A. Virtual Private Network connectio
B. AWS Directory Services, and Classic link
C. Virtual Private Network connectio
D. AWS Di rectory Services, and Amazon Workspaces
E. AWS Directory Service, Amazon Workspaces, and AWS Identity and Access Management
F. Amazon Elastic Compute Cloud, and AWS Identity and Access Management

Correct Answer:C