Which combination of technologies would be best for designing a solution that can survive the outage of a region? (Select two)

Question

Options

• AMulti-region database replication
• BSingle-zone server deployments
• CCross-region load balancing
• DRegion-specific user authentication

• A
  79% (22)
• B
  7% (2)
• D
  14% (4)

Explanation

Multi-region database replication (A) ensures data remains available and consistent even if an entire region goes down, by maintaining synchronized copies of data across geographic boundaries. Cross-region load balancing (C) automatically routes traffic away from a failed region to healthy ones, making the failure transparent to users. Together, these two form the foundation of a region-resilient architecture: one protects the data layer, the other protects traffic routing.

Why the distractors fail:

• B (Single-zone deployments): Concentrating resources in one zone is the opposite of resilience - a zone failure takes everything down.
• D (Region-specific authentication): Tying auth to a single region creates a regional dependency; if that region fails, users can't authenticate anywhere.

Memory tip: Think "survive a region outage" = replicate the data, reroute the traffic - A and C map directly to those two actions. If an answer limits scope to a single zone or region, it's always wrong for availability questions.

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