Module 3: Caching and Optimizing Load Balancing

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In this post, I provide complete, accurate, and detailed explanations for the answers to Module 3: Caching and Optimizing Load Balancing of Course 7: Networking in Google Cloud: Load Balancing – Preparing for Google Cloud Certification: Cloud Security Engineer Professional Certificate.

Whether you’re preparing for quizzes or brushing up on your knowledge, these insights will help you master the concepts effectively. Let’s dive into the correct answers and detailed explanations for each question!

Quiz - Caching and Optimizing Load Balancing

Graded Assignment

1. CDN Interconnect provides:

  • A virtual private network (VPN) tunnel between your VPC network and Google’s global network.
  • A direct peering connection between third-party content delivery networks (CDNs) and Google’s edge network. ✅
  • A private connection between your on-premises network and Google Cloud.
  • A direct connection between your origin servers and Google’s Cloud Load Balancing service.

Explanation:
CDN Interconnect enables select third-party CDNs to establish direct connections with Google’s edge network. This reduces latency and egress costs when users access content served from Google Cloud origin servers.

2. Which of the following best practices help optimize load balancing cost?

  • Implementing a caching layer with a content delivery network (CDN). ✅
  • Selecting the most expensive load balancer type for maximum performance.
  • Ignoring load balancer health checks to avoid additional API calls.
  • Overprovisioning load balancer resources to handle peak traffic loads.

Explanation:
Using a CDN layer reduces load on backend services and minimizes egress traffic by caching content closer to users. This lowers operational and bandwidth costs significantly.

3. When you use the internal IP address of the forwarding rule to specify an internal Network Load Balancer next hop, the load balancer can only be:

  • In the same subnet as the next hop route.
  • In the same VPC network as the next hop route or in a peered VPC network. ✅
  • In the same VPC network as the next hop route.
  • In the same subnet as the next hop route or a shared VPC network.

Explanation:
For internal passthrough Network Load Balancers used as next hops in custom static routes, they must be in the same VPC or a VPC peered with the one that owns the route.

Related contents:

Module 2: Hybrid Load Balancing and Traffic Management

You might also like:

Course 1: Preparing for Your Professional Cloud Security Engineer Journey
Course 2: Google Cloud Fundamentals: Core Infrastructure
Course 3: Networking in Google Cloud: Fundamentals
Course 4: Networking in Google Cloud: Routing and Addressing
Course 5: Networking in Google Cloud: Network Architecture
Course 6: Networking in Google Cloud: Network Security
Course 8: Networking in Google Cloud: Hybrid and Multicloud
Course 9: Managing Security in Google Cloud
Course 10: Security Best Practices in Google Cloud
Course 11: Mitigating Security Vulnerabilities on Google Cloud
Course 12: Logging and Monitoring in Google Cloud
Course 13: Observability in Google Cloud
Course 14: Hands-On Labs in Google Cloud for Security Engineers

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