Amazon Web Services Updated SOA-C02 Exam Questions and Answers by romilly

To ensure that the application endpoint has a static public IP address, the SysOps administrator should deploy the application behind an internet-facing Network Load Balancer (NLB):

Network Load Balancer:

An NLB automatically provides a static IP address that can be associated with the load balancer. It supports static IP addresses for each Availability Zone and can handle a high number of requests per second.

Step-by-Step Explanation:

Understand the Problem:

An EC2 instance needs to be reachable from the internet.

Analyze the Requirements:

Ensure proper routing for internet connectivity.

Evaluate the Options:

Option A: A route for 0.0.0.0/0 that points to a NAT gateway.

NAT gateways allow instances in private subnets to access the internet, not the other way around.

Option B: A route for 0.0.0.0/0 that points to an egress-only internet gateway.

Egress-only gateways are for IPv6 traffic and do not provide inbound internet access.

Option C: A route for 0.0.0.0/0 that points to an internet gateway.

Internet gateways provide both inbound and outbound internet access.

Option D: A route for 0.0.0.0/0 that points to an elastic network interface.

Elastic network interfaces do not provide internet routing.

Select the Best Solution:

Option C: Adding a route to the internet gateway ensures the EC2 instance is reachable from the internet.

References:

Amazon VPC Internet Gateway

Configuring a route to the internet gateway ensures proper internet connectivity for the EC2 instance.

Increasing the amount of memory for the Lambda function will help to improve the performance of the function. This is because the Lambda function is CPU-intensive and increasing the memory will give it access to more CPU resources and help it run faster. The other options (activating hyperthreading in the CPU launch options for the Lambda function, turning off the AWS managed encryption, and loading the required code into a custom layer) will not help to improve the performance of the Lambda function and are not the correct solutions for this issue.

https://docs.aws.amazon.com/lambda/latest/dg/configuration-function-common.html#configuration-memory-console

Using Amazon S3 Block Public Access as a centralized way to limit public access. Block Public Access settings override bucket policies and object permissions. Be sure to enable Block Public Access for all accounts and buckets that you don't want publicly accessible.

https://aws.amazon.com/premiumsupport/knowledge-center/secure-s3-resources/#:~:text=Using%20Amazon%20S3%20Block%20 Public,don't%20want%20publicly%20accessible.