- (Exam Topic 1)
Which of the following are characteristics of AWS WAF? (Select TWO.)

1. A. Acts as a firewall that controls inbound and outbound traffic between Amazon EC2 instances
2. B. Acts as a firewall that controls inbound and outbound traffic between subnets
3. C. Gives users the ability to block traffic that has specific HTTP headers
4. D. Protects websites that are not hosted on AWS
5. E. Scans Amazon EC2 instances for common vulnerabilities

Correct Answer: BC
AWS WAF lets you create rules to filter web traffic based on conditions that include IP addresses, HTTP headers and body, or custom URIs. This gives you an additional layer of protection from web attacks that attempt to exploit vulnerabilities in custom or third party web applications. In addition, AWS WAF makes it easy to create rules that block common web exploits like SQL injection and cross site scripting.
AWS WAF allows you to create a centralized set of rules that you can deploy across multiple websites. This means that in an environment with many websites and web applications you can create a single set of rules that you can reuse across applications rather than recreating that rule on every application you want to protect.

- (Exam Topic 3)
A company wants to continuously improve processes and procedures to deliver business value. Which pillar of the AWS Well-Architected Framework does this goal represent?

1. A. Performance efficiency
2. B. Operational excellence
3. C. Reliability
4. D. Sustainability

Correct Answer: B
https://aws.amazon.com/blogs/apn/the-6-pillars-of-the-aws-well-architected-framework/#:~:text=1.-,Operational

- (Exam Topic 3)
A company wants to build an application that consists entirely of microservices. Which AWS Cloud architecture design principle supports this goal?

1. A. Think parallel
2. B. Implement elasticity
3. C. Stop guessing capacity
4. D. Decouple components

Correct Answer: D

- (Exam Topic 3)
Which AWS service or feature can a company use to determine which business unit is using specific AWS resources?

1. A. Cost allocation tags
2. B. Key pairs
3. C. Amazon Inspector
4. D. AWS Trusted Advisor

Correct Answer: A

- (Exam Topic 1)
A company needs an AWS Support plan that provides programmatic case management through the AWS Support API.
Which support plan will meet this requirement MOST cost-effectively?

1. A. AWS Business Support
2. B. AWS Basic Support
3. C. AWS Developer Support
4. D. AWS Enterprise Support

Correct Answer: B