Medium1 markMultiple Choice
Subtask 1.2: Technical RequirementsHigh AvailabilityCompute EngineLoad Balancing

GCP PCA · Question 36 · Technical Requirements

You are designing a highly available web application on Compute Engine. The application must survive a single zone failure without any manual intervention. Which TWO architectural components are required? (Select TWO)

Answer options:

A.

Regional Managed Instance Group (MIG)

B.

Zonal Managed Instance Group (MIG)

C.

HTTP(S) Load Balancer

D.

Cloud VPN

E.

Cloud Storage Multi-region bucket

How to approach this question

Identify the compute grouping and traffic routing components needed for multi-zone HA.

Full Answer

To survive a zone failure, compute resources must span multiple zones (Regional MIG). Additionally, a Load Balancer is required to perform health checks and route incoming user traffic only to the healthy instances in the surviving zones.

Common mistakes

Selecting Zonal MIG (B) which provides no cross-zone redundancy.

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