1. A company built an application that lets users check in to places they visit, rank the places, and add reviews about their experiences. The application is successful with a rapid increase in the number of users every month.The chief technology officer fears the database supporting the current Infrastructure may not handle the new load the following month because the single Amazon RDS for MySQL instance has triggered alarms related to resource exhaustion due to read requests.What can a solutions architect recommend to prevent service Interruptions at the database layer with minimal changes to code?

A) Create an Amazon EMR cluster and migrate the data to a Hadoop Distributed File System (HDFS) with a replication factor of 3.
B) Create RDS read replicas and redirect read-only traffic to the read replica endpoints. Enable a Multi-AZ deployment.
C) Create an Amazon ElastiCache cluster and redirect all read-only traffic to the cluster. Set up the cluster to be deployed in three Availability Zones.
D) Create an Amazon DynamoDB table to replace the RDS instance and redirect all read-only traffic to the DynamoDB table Enable DynamoDB Accelerator to offload traffic from the main table.



2. A company is investigating potential solutions that would collect, process, and store users' service usage data. The business objective is to create an analytics capability that will enable the company to gather operational insights quickly using standard SQL queries. The solution should be highly available and ensure Atomicity, Consistency, Isolation, and Durability (ACID) compliance in the data tier.Which solution should a solutions architect recommend?

A) Deploy PostgreSQL on an Amazon EC2 instance that uses Amazon EBS Throughput Optimized HDD storage.
B) Create an Amazon Neptune database in a Multi AZ design
C) Use a fully managed Amazon RDS for MySQL database in a Multi-AZ design
D) Use Amazon DynamoDB transactions



3. A company collects temperature, humidity, and atmospheric pressure data in cities across multiple continents. The average volume of data collected per site each day is 500 GB. Each site has a high-speed internet connection. The company's weather forecasting applications are based in a single Region and analyze the data daily.What is the FASTEST way to aggregate data from all of these global sites?

A) Enable Amazon S3 Transfer Acceleration on the destination bucket. Use multipart uploads to directly update site data to the destination bucket.
B) Upload site data to an Amazon S3 bucket in the closest AWS Region. Use S3 cross-Region replication to copy objects to the destination bucket.
C) Schedule AWS Snowball jobs daily to transfer data to the closest AWS Region. Use S3 cross-Region replication to copy objects to the destination bucket.
D) Upload the data to an Amazon EC2 instance in the closest Region. Store the data in an Amazon EBS volume. Once a day, take an EBS snapshot and copy it to the centralized Region. Restore the EBS volume in the centralized Region and run an analysis on the data daily



4. A company has created a VPC with multiple private subnets in multiple Availability Zones (AZS) and one public subnet in one of the AZs. The public subnet is used to launch a NAT gateway. There are instances in the private subnets that use a NAT gateway to connect to the internet. In case of an AZ failure, the company wants to ensure that the instances are not all experiencing internet connectivity issues and that there is a backup plan ready. Which solution should a solutions architect recommend that is MOST highly available?

A) Create public subnet in each AZ and launch a NAT gateway in each subnet. Configure the traffic from the private subnets in each AZ to the respective NAT gateway
B) Create a new public subnet with a NAT gateway in the same AZ. Distribute the traffic between the two NAT gateways
C) Create an Amazon EC2 NAT instance in the same public subnet. replace the NAT gateway with the NAT instance and associate the instance with an Auto Scaling group with an appropriate scaling group
D) Create an Amazon EC2 NAT instance in a new public subnet, Distribute the traffic between the NAT gateway and the NAT instance



5. A company has multiple AWS accounts for various departments. One of the departments wants to share an Amazon S3 bucket will all other departments.Which solution will require the LEAST amount of effort?

A) Create a pre-signed URL for the bucket and share it with other departments
B) Set the S3 bucket policy to allow cross-account access to other departments.
C) Enable cross-account S3 replication for the bucket.
D) Create IAM users for each of the departments and configure a read-ony IAM policy