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NEW QUESTION 47
A retail company processes point-of-state data on application servers in its data center and writes outputs to Amazon DynamoDB table. The data center is connected to the company's VPC with an AWS Direct Connect (DX) connection, and the application servers require a consistent network connection at speed greater than 2 Gbps.
The company decides that the DynamoDB table needs to be highly available and fault tolerant. The company policy states that the data should be available across two regions.
What changes should the company make to meet these requirements?

• A. Use an AWS managed VPN as a backup to DX. Create an identical DynamoDB table in a second Region. Modify the application to replicate data to both regions.
• B. Establish a second DX connection for redundancy. Use DynamoDB global tables to replicate data to a second Region modify the application to fail over to the second Region.
• C. Establish a second DX connection for redundancy. Create an identical DynamoDB table in a second Region. Enable DynamoDB auto scaling to manage throughput capacity. Modify the application to write to the second Region.
• D. Use AWS managed VPN as a backup to DX. Create an identical DynamoDB table in a second Region.
  Enable DynamoDB streams to capture changes to the table. Use AWS Lambda to replicate changes to the second Region.

Answer: B

NEW QUESTION 48
A company is planning a large event where a promotional offer will be introduced. The company's website is hosted on AWS and backed by an Amazon RDS for PostgreSQL DB instance The website explains the promotion and includes a sign-up page that collects user information and preferences Management expects large and unpredictable volumes of traffic periodically which will create many database writes A solutions architect needs to build a solution that does not change the underlying data model and ensures that submissions are not dropped before they are committed to the database Which solutions meets these requirements?

• A. Use Amazon SQS to decouple the application and database layers Configure an AWS Lambda function to write items from the queue into the database
• B. Use Amazon ElastiCache for Memcached to increase write capacity to the DB instance
• C. immediately before the event scale up the existing DB instance to meet the anticipated demand Then scale down after the event
• D. Migrate to Amazon DynamoDB and manage throughput capacity with automatic scaling

Answer: A

NEW QUESTION 49
A company is developing a new service that will be accessed using TCP on a static port. A solutions architect must ensure that the service is highly available, has redundancy across Availability Zones, and is accessible using the DNS name my.service.com, which is publicly accessible. The service must use fixed address assignments so other companies can add the addresses to their allow lists.
Assuming that resources are deployed in multiple Availability Zones in a single Region, which solution will meet these requirements?

• A. Create Amazon EC2 instances for the service. Create one Elastic IP address for each Availability Zone.
  Create a Network Load Balancer (NLB) and expose the assigned TCP port. Assign the Elastic IP addresses to the NLB for each Availability Zone. Create a target group and register the EC2 instances with the NLB. Create a new A (alias) record set named my.service.com, and assign the NLB DNS name to the record set.
• B. Create Amazon EC2 instances with an Elastic IP address for each instance. Create a Network Load Balancer (NLB) and expose the static TCP port. Register EC2 instances with the NLB. Create a new name server record set named my.service.com, and assign the Elastic IP addresses of the EC2 instances to the record set. Provide the Elastic IP addresses of the EC2 instances to the other companies to add to their allow lists.
• C. Create an Amazon ECS cluster and a service definition for the application. Create and assign public IP address for each host in the cluster. Create an Application Load Balancer (ALB) and expose the static TCP port. Create a target group and assign the ECS service definition name to the ALB. Create a new CNAME record set and associate the public IP addresses to the record set. Provide the Elastic IP addresses of the Amazon EC2 instances to the other companies to add to their allow lists.
• D. Create an Amazon ECS cluster and a service definition for the application. Create and assign public IP addresses for the ECS cluster. Create a Network Load Balancer (NLB) and expose the TCP port. Create a target group and assign the ECS cluster name to the NLB. Create a new A record set named my.service.com, and assign the public IP addresses of the ECS cluster to the record set. Provide the public IP addresses of the ECS cluster to the other companies to add to their allow lists.

Answer: A

NEW QUESTION 50
A company is planning on hosting its ecommerce platform on AWS using a multi-tier web application designed for a NoSQL database. The company plans to use the us-west-2 Region as its primary Region. The company want to ensure that copies of the application and data are available in second Region, us-west-1, for disaster recovery. The company wants to keep the time to fall over as tow as possible. Fading back to the primary Region should be possible without administrative interaction after the primary service is restored.
Which design should the solutions architect use?

• A. Use AWS CloudFormation StackSets to create the stacks in both Regions with Auto Scaling groups (or the web and application tiers Asynchronously replicate static content between Regions using Amazon S3 cross-Region replication Use an Amazon Route 53 DNS failover routing policy to direct users to the secondary site in us-west-1 in the event of an outage Use Amazon DynamoOB global tables for the database tier
• B. Use AWS Service Catalog to deploy the web and application servers in both Regions Asynchronously replicate static content between the two Regions using Amazon S3 cross-Region replication Use Amazon Route 53 health checks to identify a primary Region failure and update the public DNS entry listing to the secondary Region in the event of an outage. Use Amazon RDS for MySQL with cross-Region replication for the database tier
• C. Use AWS CloudFormation StackSets to create the stacks in both Regions using Auto Scaling groups for the web and application bars Asynchronously replicate static content between Regions using Amazon S3 cross-Region replication Use Amazon CloudFront with static files in Amazon S3, and multi-Region origins tor the front-end web tier. Use Amazon DynamoDB tables m each Region with scheduled backups to Amazon S3
• D. Use AWS CloudFormation StackSets to create the stacks in both Regions with Auto Scaling groups for the web and application tiers Asynchronously replicate static content between Regions using Amazon S3 cross-Region replication. Use an Amazon Route 53 DNS failover routing policy to direct users to the secondary site in us-west-1 in the event of an outage Deploy an Amazon Aurora global database for the database tier

Answer: C

NEW QUESTION 51
An organization has hosted an application on the EC2 instances. There will be multiple users connecting to the instance for setup and configuration of application. The organization is planning to implement certain security best practices.
Which of the below mentioned pointers will not help the organization achieve better security arrangement?

• A. Allow only IAM users to connect with the EC2 instances with their own secret access key.
• B. Create a procedure to revoke the access rights of the individual user when they are not required to connect to EC2 instance anymore for the purpose of application configuration.
• C. Disable the password based login for all the users. All the users should use their own keys to connect with the instance securely.
• D. Apply the latest patch of OS and always keep it updated.

Answer: A

Explanation:
Explanation
Since AWS is a public cloud any application hosted on EC2 is prone to hacker attacks. It becomes extremely important for a user to setup a proper security mechanism on the EC2 instances. A few of the security measures are listed below:
Always keep the OS updated with the latest patch
Always create separate users with in OS if they need to connect with the EC2 instances, create their keys and disable their password Create a procedure using which the admin can revoke the access of the user when the business work on the EC2 instance is completed. Lock down unnecessary ports.
Audit any proprietary applications that the user may be running on the EC2 instance Provide temporary escalated privileges, such as sudo for users who need to perform occasional privileged tasks The IAM is useful when users are required to work with AWS resources and actions, such as launching an instance. It is not useful to connect (RDP / SSH) with an instance.
http://aws.amazon.com/articles/1233/

NEW QUESTION 52
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