A team selected an App Service region with zones but never enabled zone redundancy or verified plan support. Which recommendation is appropriate?

Choose the single best answer.

A.Assume every resource in a zoned region is already zone-redundant
B.Enable backups only and treat a restore as an already running redundant instance
C.Scale up one zonal instance and assume additional cores provide zone isolation
D.Verify supported plan/region, enable zone redundancy, and size enough instances/surviving capacity

Show the answer and explanation

✓ Correct answer

Verify supported plan/region, enable zone redundancy, and size enough instances/surviving capacity

Zone resilience is configuration-specific and requires sufficient surviving capacity. Region capability does not automatically enable it; more cores on one zonal instance do not create zone isolation. Backup restores support recovery but are not an already serving redundant worker. Source guide: PDF page 40.

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