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Difficulty: EasyAWS Global Infrastructure

An organization wants to host its database in a way that protects it from a localized disaster, such as a building-specific power outage, while maintaining low-latency replication between the primary database and the standby replica. According to AWS best practices, the primary and standby databases should be deployed in two different instances of which infrastructure component?

  1. Availability ZonesAnswer
  2. B
    AWS Regions
  3. C
    Edge Locations
  4. D
    AWS Outposts

Answer

Availability Zones
Availability Zones are physically isolated collections of data centers within an AWS Region. They are designed to isolate failures (such as power outages or flooding) while remaining close enough to each other to be connected by low-latency fiber-optic networking, enabling synchronous data replication.

Step-by-Step Solution

1
Analyze the requirement for protection against localized disasters (such as building power outages) while maintaining low latency.
Identify that the solution requires physically isolated facilities located in close proximity.
Physical isolation ensures that a disaster affecting one facility does not affect the other, while close proximity maintains low network latency.
2
Evaluate the AWS Global Infrastructure components against these requirements.
Availability Zones consist of one or more discrete data centers with redundant power and networking, connected via low-latency links within a single region.
This matches the requirements for local disaster resilience and high performance.

Key Concept

AWS Availability Zones are designed for high availability and fault tolerance within a single geographic region by providing physically isolated data center locations connected with low-latency networking.
Estimated Time:45s
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Topics

AWS Global Infrastructure

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