Review Mode Set 3 – AWS Certified Solutions Architect Associate

Question 1

What is the smallest netmask block size available to create a VPC?

Answer 1

/28. 16 IPs

Question 2

When a subnet is created, what route table is it automatically associated with?

Answer 2

Every subnet that you create is automatically associated with the main route table for the VPC.

Question 3

What is typically the cause of EC2 error types like “EC2ThrottledException” when you are running Lambda invocations?

Answer 3

Your VPC does not have sufficient ENIs or subnet IPs .

Question 4

If an EC2 needs to allow port 443 connection incoming, what needs to happen within a VPC?

Answer 4

-SG needs to allow TCP 443 inbound
-Network ACL needs to allow TCP 443 inbound
-NACL needs to allow outbound TCP on ephemeral ports (32768 - 65535)

Question 5

For SSL connections on port 443, does the client or the server use port 443?

Does Client or server use ephemeral ports?

Answer 5

Client establishes the connection on port 443.
Server responds with connection over ephemeral ports (32768 - 65535)

Question 6

What is the most fault-tolerant routing configuration in Route 53?

Answer 6

Active-Active Failover with Weighted routing policy

Question 7

What is the best way to load balance read requests incoming to an Aurora DB?

Answer 7

use the built-in Reader endpoint of the Amazon Aurora database.

Question 8

Is DDB compatible with Cloudfront?

Answer 8

No. DynamoDB table is NOT compatible with CloudFront

Question 9

when moving an Aurora DB cluster to Aurora Serverless, what is the best way to migrate to minimize downtime?

Answer 9

Use AWS Database Migration Service (AWS DMS) to migrate to a new Aurora Serverless database.

Question 10

For RDS, which type of replication is associated with each deployment?

Multi-AZ
&
Read Replica

Answer 10

Multi-AZ: Synchronous

Read Replica: Asynchronous