EC-Council Certified Ethical Hacker (CEH) v12Cloud ComputingEasy
A cloud architect is designing a highly available application that needs to withstand the failure of an entire data center. The application will be deployed across multiple independent physical locations within a single cloud region. Which architectural concept is being applied here?
- ALocal Zone
- BRegion
- CEdge Location
- DAvailability Zone
Show answer & explanationAnswer & explanation
Correct answer: D. Availability Zone
Availability Zones are distinct physical locations within a cloud region, designed to be isolated from failures in other Availability Zones. Deploying across multiple AZs ensures high availability against data center-wide failures.
Why the other options are wrong
- A. Local Zones extend a region to provide low-latency access to users in a specific geographic area, not primarily for data center-level fault tolerance within a region.
- B. A region is a geographical area containing multiple Availability Zones; deploying only within one region does not guarantee resilience against a data center failure if only one AZ is used.
- C. Edge locations are typically used for content delivery and caching, not for deploying entire applications for high availability across data centers.
Availability Zone (AZ)
A distinct, isolated physical location within a cloud region, designed for fault tolerance and high availability.
- Each AZ has independent power, cooling, and networking.
- Connected to other AZs within the region by low-latency links.
- Allows for deploying applications across multiple data centers for resilience.
Memory trick: AZs are like separate rooms in a house, if one burns, the others are safe.