A mobile app has become very popular, and usage has gone from a few hundred to millions of users. Users capture and upload images of activities within a city, and provide ratings and recommendations. Data access patterns are unpredictable. The current application is hosted on Amazon EC2 instances behind an Application Load Balancer (ALB). The application is experiencing slowdowns and costs are growing rapidly.
Which changes should a solutions architect make to the application architecture to control costs and improve performance?
A. Create an Amazon CloudFront distribution and place the ALB behind the distribution. Store static content in Amazon S3 in an Infrequent Access storage class.A financial company is building a system to generate monthly, immutable bank account statements for its users. Statements are stored in Amazon S3. Users should have immediate access to their monthly statements for up to 2 years. Some users access their statements frequently, whereas others rarely access their statements. The company's security and compliance policy requires that the statements be retained for at least 7 years.
What is the MOST cost-effective solution to meet the company's needs?
A. Create an S3 bucket with Object Lock disabled. Store statements in S3 Standard. Define an S3 Lifecycle policy to transition the data to S3 Standard-Infrequent Access (S3 Standard-IA) after 30 days. Define another S3 Lifecycle policy to move the data to S3 Glacier Deep Archive after 2 years. Attach an S3 Glacier Vault Lock policy with deny delete permissions for archives less than 7 years old.You are implementing AWS Direct Connect. You intend to use AWS public service end points such as Amazon S3, across the AWS Direct Connect link. You want other Internet traffic to use your existing link to an Internet Service Provider. What is the correct way to configure AWS Direct connect for access to services such as Amazon S3?
A. Configure a public Interface on your AWS Direct Connect link. Configure a static route via your AWS Direct Connect link that points to Amazon S3 Advertise a default route to AWS using BGP.In Amazon RDS for PostgreSQL, you can provision up to 3TB storage and 30,000 IOPS per database instance. For a workload with 50% writes and 50% reads running on a cr1.8xlarge instance, you can realize over 25,000 IOPS for PostgreSQL. However, by provisioning more than this limit, you may be able to achieve:
A. higher latency and lower throughput.A company wants to host its website on AWS using serverless architecture design patterns for global customers. The company has outlined its requirements as follow:
1.
The website should be responsive.
2.
The website should offer minimal latency.
3.
The website should be highly available.
4.
Users should be able to authenticate through social identity providers such as Google, Facebook, and Amazon.
5.
There should be baseline DDoS protections for spikes in traffic.
How can the design requirements be met?
A. Use Amazon CloudFront with Amazon ECS for hosting the website. Use AWS Secrets Manager to provide user management and authentication functions. Use ECS Docker containers to build an API.A company runs applications on Amazon EC2 instances. The company plans to begin using an Auto Scaling group for the instances. As part of this transition, a solutions architect must ensure that Amazon CloudWatch Logs automatically collects logs from all new instances. The new Auto Scaling group will use a launch template that includes the Amazon Linux 2 AMI and no key pair.
Which solution meets these requirements?
A. Create an Amazon CloudWatch agent configuration for the workload. Store the CloudWatch agent configuration in an Amazon S3 bucket. Write an EC2 user data script to fetch the configuration file from Amazon S3. Configure the CloudWatch agent on the instance during initial boot.A company manages an on-premises JavaScript front-end web application. The application is hosted on two servers secured with a corporate Active Directory. The application calls a set of Java-based microservices on an application server and stores data in a clustered MySQL database. The application is heavily used during the day on weekdays. It is lightly used during the evenings and weekends.
Daytime traffic to the application has increased rapidly, and reliability has diminished as a result. The company wants to migrate the application to AWS with a solution that eliminates the need for server maintenance, with an API to securely connect to the microservices.
Which combination of actions will meet these requirements? (Select THREE.)
A. Host the web application on Amazon S3. Use Amazon Cognito identity pools (federated identities) with SAML for authentication and authorization.A video streaming company recently launched a mobile app for video sharing. The app uploads various files to an Amazon S3 bucket in the us-east-1 Region. The files range in size from 1 GB to 10 GB.
Users who access the app from Australia have experienced uploads that take long periods of time. Sometimes the files fail to completely upload for these users. A solutions architect must improve the app's performance for these uploads.
Which solutions will meet these requirements? (Choose two.)
A. Enable S3 Transfer Acceleration on the S3 bucket. Configure the app to use the Transfer Acceleration endpoint for uploads.In Amazon CloudWatch, you can publish your own metrics with the put-metric-data command. When you create a new metric using the put-metric-data command, it can take up to two minutes before you can retrieve statistics on the new metric using the get-metric-statistics command.
How long does it take before the new metric appears in the list of metrics retrieved using the list- metrics command?
A. After 2 minutesA user is creating a PIOPS volume. What is the maximum ratio the user should configure between PIOPS and the volume size?
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