Domain 2: Design High-Performing Architectures

Question 1

Implement a fanout messaging.

Answer 1

Create an SNS topic with a message filtering policy and configure multiple SQS queues to subscribe to the topic.

Question 2

A database that has a read replication latency of less than 1 second.

Answer 2

Use Amazon Aurora with cross-region replicas.

Question 3

A specific type of Elastic Load Balancer that uses UDP as the protocol for communication between clients and thousands of game servers around the world.

Answer 3

Use Network Load Balancer for TCP/UDP protocols.

Question 4

Monitor the memory and disk space utilization of an EC2 instance.Retrieve a subset of data from a large CSV file stored in the S3 bucket.

Answer 4

Install Amazon CloudWatch agent on the instance.

Question 5

Retrieve a subset of data from a large CSV file stored in the S3 bucket.

Answer 5

Perform an S3 Select operation based on the bucket’s name and object’s key.

Question 6

Upload 1 TB file to an S3 bucket.

Answer 6

Use Amazon S3 multipart upload API to upload large objects in parts.

Question 7

Improve the performance of the application by reducing the response times from milliseconds to microseconds.

Answer 7

Use Amazon DynamoDB Accelerator (DAX)

Question 8

Retrieve the instance ID, public keys, and public IP address of an EC2 instance.

Answer 8

Access the URL: http://169.254.169.254/latest/meta-data/ using the EC2 instance.

Question 9

Route the internet traffic to the resources based on the location of the user.

Answer 9

Use Route 53 Geolocation Routing policy.