PCA Question 33

Community Discussion

Written by other learners. Comments can disagree with the marked answer — check the official documentation when in doubt.

• Chose D1

  1. Firewall rules for security: Firewall rules provide the most granular and robust control over network traffic. By using tags to identify instances in each tier (web, API, database), you can create firewall rules that explicitly allow or deny traffic between these tiers. 2. Controlling traffic flow: You can create rules that: - Allow traffic from the web tier to the API tier. - Allow traffic from the API tier to the database tier. - Explicitly deny traffic between the web and database tiers. 3. Scalability and Flexibility: This approach works well even when your tiers scale independently. As new instances are added, they inherit the tags and automatically adhere to the defined firewall rules.

• 1

  D is correct

• Chose D2

  Routes are typically used for directing traffic between networks rather than within the same network. While tags can be used for identifying resources, they are typically used in conjunction with firewall rules for controlling traffic flow.