Google Professional Cloud Network Engineer Question 194
Select 3Google Cloud PlatformYou are designing a new VPC network in Google Cloud for an application that requires multiple microservices to run on Compute Engine instances. Each microservice requires a dedicated set of IP addresses for communication, and the application must scale dynamically while avoiding IP address exhaustion. How should you plan your subnets and IP allocations to meet these requirements?
- A
Use a single large subnet for the entire VPC and assign alias IP ranges to each Compute Engine instance for the microservices.
- B
Create multiple small subnets for each microservice and assign primary IP ranges to each Compute Engine instance.
- C
Assign alias IP ranges to Compute Engine instances from the primary IP range of their subnet.
- D
Use separate VPCs for each microservice and peer them together for communication.
- E
Plan subnet IP ranges with sufficient address space to allow alias IP ranges to be allocated dynamically.
Show answer and explanation
Correct answers: A, C, E
Explanation
The best approach to meet the requirements is to use a single large subnet with alias IP ranges assigned to Compute Engine instances. This allows each microservice to have a dedicated set of IP addresses for communication while avoiding IP exhaustion. Alias IPs simplify routing and network design, and planning for sufficient address space ensures scalability as the application grows.
- A. Correct.
Correct: Using a single large subnet simplifies network management while alias IPs allow microservices to have dedicated IP ranges without requiring additional subnets.
- B. Incorrect.
Incorrect: Creating multiple small subnets for each microservice can lead to increased complexity in managing subnets and does not leverage alias IPs efficiently.
- C. Correct.
Correct: Alias IP ranges can be assigned from the primary IP range of a subnet, enabling microservices to have dedicated IP ranges while sharing the subnet's primary range.
- D. Incorrect.
Incorrect: Using separate VPCs for each microservice is unnecessary for this scenario and would complicate network design and communication.
- E. Correct.
Correct: Planning subnet IP ranges with sufficient address space ensures that there is room to allocate alias IP ranges dynamically as the application scales.