CompTIA Cloud+ (CV0-004)DeploymentMedium
A cloud engineer is deploying a highly available application that requires its components to be distributed across multiple physical locations within a single cloud region to withstand localized failures. This ensures that if one data center goes offline, the application remains operational. Which cloud concept is being leveraged to achieve this resilience?
- AContent Delivery Network (CDN)
- BRegions
- CEdge Locations
- DAvailability Zones
Show answer & explanationAnswer & explanation
Correct answer: D. Availability Zones
Availability Zones (AZs) are distinct physical locations within a cloud region, each with independent power, cooling, and networking, designed to be isolated from failures in other AZs. Deploying across multiple AZs within a region ensures high availability against localized data center outages.
Why the other options are wrong
- A. A CDN improves content delivery speed by caching, but doesn't ensure application component resilience within a region.
- B. Regions are geographically separate areas, but the question specifies 'within a single cloud region' and 'localized failures', pointing to AZs.
- C. Edge Locations are used for caching and content delivery, not for distributing application components for high availability within a region.
Availability Zones (AZs)
Logically and physically separate data centers within a single cloud region, designed to be isolated from failures in other AZs.
- Provides high availability and fault tolerance.
- Connected by low-latency links.
- Allows distributing application components for resilience.
Memory trick: Regions hold Zones, Zones hold resources.