1. A Solutions Architect is designing the architecture for a new three-tier web-based e-commerce site that must be available 24/7. Requests are expected to range from 100 to 10,000 each minute. Usage can vary depending on time of day, holidays, and promotions. The design should be able to handle these volumes, with the ability to handle higher volumes if necessary.How should the Architect design the architecture to ensure the web tier is cost-optimized and can handle the expected traffic? (Select two.)(Select 2answers)

A) Create an CloudFront distribution pointing to static content in Amazon S3.
B) Launch Amazon EC2 instances in an Auto Scaling group behind an ELB.
C) Use Amazon S3 multi-part uploads to improve upload times.
D) Use Amazon Route 53 to route traffic to the correct region.
E) Store all static files in a multi-AZ Amazon Aurora database.


2. A Solutions Architect is designing an application that will encrypt all data in an Amazon Redshift cluster.Which action will encrypt the data at rest?

A) Encrypt the data using SSL/TLS.
B) Encrypt the Amazon EBS volumes
C) Use the AWS KMS Default Customer master key.
D) Place the Redshift cluster in a private subnet.



3. A company's website runs on Amazon EC2 instances behind an Application Load Balancer (ALB). The website has a mix of dynamic and static content. Users around the globe are reporting that the website is slow.Which set of actions will improve website performance for users worldwide?

A) Host the website in an Amazon S3 bucket in the Regions closest to the users and delete the ALB and EC2 instances. Then update an Amazon Route 53 record to point to the S3 buckets.
B) Create an Amazon CloudFront distribution and configure the ALB as an origin. Then update the Amazon Route 53 record to point to the CloudFront distribution.
C) Create a latency-based Amazon Route 53 record for the ALB. Then launch new EC2 instances with larger instance sizes and register the instances with the ALB.
D) Launch new EC2 instances hosting the same web application in different Regions closer to the users. Then register instances with the same ALB using cross- Region VPC peering.



4. A company runs an internal browser-based application. The application runs on Amazon EC2 instances behind an Application Load Balancer. The instances run in an Amazon EC2 Auto Scaling group across multiple Availability Zones. The Auto Scaling group scales up to 20 instances during work hours, but scales down to 2 instances overnight. Staff are complaining that the application is very slow when the day begins, although it runs well by mid-morning.How should the scaling be changed to address the staff complaints and keep costs to a minimum?

A) Implement a scheduled action that sets the desired capacity to 20 shortly before the office opens.
B) Implement a scheduled action that sets the minimum and maximum capacity to 20 shortly before the office opens.
C) Implement a target tracking action triggered at a lower CPU threshold, and decrease the cooldown period.
D) Implement a step scaling action triggered at a lower CPU threshold, and decrease the cooldown period.



5. A Solutions Architect is designing an architecture for a mobile gaming application. The application is expected to be very popular. The Architect needs to prevent the Amazon RDS MySQL database from becoming a bottleneck due to frequently accessed queries.Which service or feature should the Architect add to prevent a bottleneck?

A) Amazon SQS in front of RDS MySQL Database
B) ELB Classic Load Balancer in front of the web application tier
C) Amazon ElastiCache in front of the RDS MySQL Database
D) Multi-AZ feature on the RDS MySQL Database