To minimize latency for a global user base, it's crucial to serve users from regions geographically close to them. Deploying VMs in multiple Google Cloud regions (Option B) achieves this by reducing the network distance and thus the round-trip time for requests.
To support user growth and provide a single point of entry with global reach, a global external Application Load Balancer (Option D) is the recommended choice for web applications. It distributes traffic to backend instances across multiple regions based on user proximity, capacity, and health. Application Load Balancers also offer features like SSL termination, content-based routing, and security policies, which are important for modern web applications.
* Option A: Deploying in a single region, regardless of the CIDR range, will result in high latency for users far from that region.
* Option C: A regional external Application Load Balancer only distributes traffic within a single region, not across multiple global regions, thus not effectively minimizing latency for all global users.
* Option E: Network Load Balancers operate at Layer 4 and don't offer the application-level routing and features of an Application Load Balancer, which are generally preferred for web applications. While they can be global, Application Load Balancers are better suited for this scenario.
Reference to Google Cloud Certified - Associate Cloud Engineer Documents:
The concepts of multi-region deployments for low latency and the use of global load balancers (specifically Application Load Balancers for web traffic) for global reach and traffic management are core topics in the Compute Engine and Load Balancing sections of the Google Cloud documentation, which are essential for the Associate Cloud Engineer certification. The best practices for global application deployment are emphasized.