A company is running a web application on Amazon EC2 instances in an Auto Scaling group. The application uses a database that runs on an Amazon RDS for PostgreSQL DB instance. The application performs slowly as traffic increases, and the database experiences a heavy read load during periods of high traffic.
Which actions should a solutions architect take to resolve these performance issues? (Select TWO.)
A. Enable auto scaling for the DB instance. B. Create a read replica for the DB instance. Configure the application to send read traffic to the read replica. C. Enable Multi-AZ for the DB instance. Configure the application to send read traffic to the standby DB instance. D. Create an Amazon ElastiCache cluster. Configure the application to cache query results in the ElastiCache cluster. E. Configure the Auto Scaling group subnets to ensure that the EC2 instances are provisioned in the same Availability Zone as the DB instance.
B. Create a read replica for the DB instance. Configure the application to send read traffic to the read replica. D. Create an Amazon ElastiCache cluster. Configure the application to cache query results in the ElastiCache cluster.
Explanation/Reference:
Question 632:
A company runs a photo processing application that needs to frequently upload and download pictures from Amazon S3 buckets that are located in the same AWS Region A solutions architect has noticed an increased cost in data transfer fees and needs to implement a solution to reduce these costs.
How can the solutions architect meet this requirement?
A. Deploy Amazon API Gateway into a public subnet and adjust the route table to route S3 calls through It. B. Deploy a NAT gateway into a public subnet and attach an end point policy that allows access To the S3 buckets. C. Deploy the application Into a public subnet and allow it to route through an internet gateway to access the S3 Buckets D. Deploy an S3 VPC gateway endpoint into the VPC and attach an endpoint policy that allows access to the S3 buckets.
D. Deploy an S3 VPC gateway endpoint into the VPC and attach an endpoint policy that allows access to the S3 buckets.
Explanation/Reference:
Question 633:
A solutions architect is designing a multi-Region disaster recovery solution for an application that will provide public API access. The application will use Amazon EC2 instances with a userdata script to load application code and an Amazon RDS for MySQL database The Recovery Time Objective (RTO) is 3 hours and the Recovery Point Objective (RPO) is 24 hours.
Which architecture would meet these requirements at the LOWEST cost?
A. Use an Application Load Balancer for Region failover. Deploy new EC2 instances with the userdata script. Deploy separate RDS instances in each Region B. Use Amazon Route 53 for Region failover Deploy new EC2 instances with the userdata script Create a read replica of the RDS instance in a backup Region C. Use Amazon API Gateway for the public APIs and Region failover Deploy new EC2 instances with the userdata script Create a MySQL read replica of the RDS instance in a backup Region D. Use Amazon Route 53 for Region failover Deploy new EC2 instances with the userdata scnpt for APIs, and create a snapshot of the RDS instance daily for a backup Replicate the snapshot to a backup Region
C. Use Amazon API Gateway for the public APIs and Region failover Deploy new EC2 instances with the userdata script Create a MySQL read replica of the RDS instance in a backup Region
Explanation/Reference:
Question 634:
A company is planning to build a new web application on AWS. The company expects predictable traffic most of the year and very high traffic on occasion. The web application needs to be highly available and fault tolerant with minimal
latency.
What should a solutions architect recommend to meet these requirements?
A. Use an Amazon Route 53 routing policy to distribute requests to two AWS Regions, each with one Amazon EC2 instance. B. Use Amazon EC2 instances in an Auto Scaling group with an Application Load Balancer across multiple Availability Zones. C. Use Amazon EC2 instances in a cluster placement group with an Application Load Balancer across multiple Availability Zones. D. Use Amazon EC2 instances in a cluster placement group and include the cluster placement group within a new Auto Scaling group.
B. Use Amazon EC2 instances in an Auto Scaling group with an Application Load Balancer across multiple Availability Zones.
Question 635:
A gaming company has a web application that displays scores. The application runs on Amazon EC2 instances behind an Application Load Balancer. The application stores data in an Amazon RDS for MySQL database. Users are starting to experience long delays and interruptions that are caused by database read performance. The company wants to improve the user experience while minimizing changes to the application's architecture.
What should a solutions architect do to meet these requirements?
A. Use Amazon ElastiCache in front of the database. B. Use RDS Proxy between the application and the database. C. Migrate the application from EC2 instances to AWS Lambda. D. Migrate the database from Amazon RDS for MySQL to Amazon DynamoDB.
C. Migrate the application from EC2 instances to AWS Lambda.
Question 636:
A company has 150 TB of archived image data stored on-premises that needs to be mowed to the AWS Cloud within the next month. The company's current network connection allows up to 100 Mbps uploads for this purpose during the night
only.
What is the MOST cost-effective mechanism to move this data and meet the migration deadline?
A. Use AWS Snowmobile to ship the data to AWS. B. Order multiple AWS Snowball devices to ship the data to AWS. C. Enable Amazon S3 Transfer Acceleration and securely upload the data. D. Create an Amazon S3 VPC endpoint and establish a VPN to upload the data.
B. Order multiple AWS Snowball devices to ship the data to AWS.
Explanation/Reference:
eg.6 hrs night 6 hrs*60min/hr=360 min 360 min*60 sec/min=21600 sec
100 Mbps*21600 s=2160000Mb or 2160 Gb or 2.1 TB can only be done
So,for 150 TB, we can use 2 X Snowball Edge Storage Optimised devices. Size of Snowball Edge Storage Optimised device=80 TB Size of Snowball Edge Compute Optimised device= 40 TB Size of Snowcone =8 TB Size of Snowmobile =100 PB (1 PB=1000 TB)
Q: How should I choose between Snowmobile and Snowball?
To migrate large datasets of 10PB or more in a single location, you should use Snowmobile. For datasets less than 10PB or distributed in multiple locations, you should use Snowball. In addition, you should evaluate the amount of available bandwidth in your network backbone. If you have a high speed backbone with hundreds of Gb/s of spare throughput, then you can use Snowmobile to migrate the large datasets all at once. If you have limited bandwidth on your backbone, you should consider using multiple Snowballs to migrate the data incrementally.
Question 637:
A company finds that, as its use of Amazon EC2 instances grows us Amazon Elastic Block Store (Amazon EDS) storage costs are increasing faster man expected. Which EBS management practices would help reduce costs? (Select TWO. ) A. Convert the EBS volumes to an EC2 instance store.
B. Monitor and enforce that the DetetionOn termination attribute is set to true for all EBS volumes, unless persistence requirements dictate otherwise. C. Purchase an EC2 Instance Savings Plan for an EBS volumes that are serving persistent business requirements. D. For EBS volumes needed for retention purposes that are not being actively used, take a snapshot and terminate the instance and volume. E. Convert the existing EBS volumes to EBS Provisioned IOPS SSD (io1).
B. Monitor and enforce that the DetetionOn termination attribute is set to true for all EBS volumes, unless persistence requirements dictate otherwise. D. For EBS volumes needed for retention purposes that are not being actively used, take a snapshot and terminate the instance and volume.
Question 638:
A company uses an Amazon S3 bucket as its data lake storage platform The S3 bucket contains a massive amount of data that is accessed randomly by multiple teams and hundreds of applications The company wants to reduce the S3 storage costs and provide immediate availability for frequently accessed objects
What is the MOST operationally efficient solution that meets these requirements?
A. Create an S3 Lifecycle rule to transition objects to the S3 Intelligent-Tiering storage class B. Store objects in Amazon S3 Glacier Use S3 Select to provide applications with access to the data C. Use data from S3 storage class analysis to create S3 Lifecycle rules to automatically transition objects to the S3 Standard-Infrequent Access {S3 Standard-IA) storage class D. Transition objects to the S3 Standard-Infrequent Access (S3 Standard-IA) storage class Create an AWS Lambda function to transition objects to the S3 Standard storage class when they are accessed by an application
C. Use data from S3 storage class analysis to create S3 Lifecycle rules to automatically transition objects to the S3 Standard-Infrequent Access {S3 Standard-IA) storage class
Explanation/Reference:
Question 639:
A company has applications hosted on Amazon EC2 instances with IPv6 addresses. The applications must initiate communications with other external applications using the internet. However, the company's security policy states that any external service cannot initiate a connection to the EC2 instances. What should a solutions architect recommend to resolve this issue?
A. Create a NAT gateway and make it the destination of the subnet's route table. B. Create an internet gateway and make it the destination of the subnet's route table. C. Create a virtual private gateway and make it the destination of the subnet's route table. D. Create an egress-only internet gateway and make it the destination of the subnet's route table
D. Create an egress-only internet gateway and make it the destination of the subnet's route table
Question 640:
A company manages a data lake in an Amazon S3 bucket that numerous application share. The S3 bucket contain unique folders with a prefix for each application. The company wants to restrict each application to its specific folder and have more granular control of the objects in each folder.
Which solution met these requirements with the LEAST amount of effort?
A. Create dedicated S3 access points and access point policies for each application. B. Create anS3 Batch Operations job to set the ACL permissions for each object in the S3 bucket. C. Update theS3 S3 bucket policy to grant access to each application based on its specific folder in the S3 bucket. D. Replicate the objects in the S3 bucket to new S3 buckets for each application. Create replication rules by prefix.
D. Replicate the objects in the S3 bucket to new S3 buckets for each application. Create replication rules by prefix.
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