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Difficulty: EasyAWS Global Infrastructure

An organization is designing a web application to be hosted on AWS. To ensure the application remains highly available and resilient to local physical disasters, such as power outages or flooding, the team wants to leverage AWS infrastructure isolation. Which two statements correctly describe the characteristics of AWS Availability Zones? (Select TWO.)

  1. Each Availability Zone consists of one or more discrete data centers with redundant power, networking, and connectivity.Answer
  2. Availability Zones within a single Region are interconnected using high-speed, low-latency, and redundant fiber-optic networks.Answer
  3. C
    Availability Zones are geographic areas located in different countries to help organizations meet strict data sovereignty requirements.
  4. D
    Each Availability Zone is an edge cache site designed to store copies of static content closer to users globally to minimize latency.
  5. E
    Availability Zones share power grids, water supplies, and network paths to ensure cost efficiency and simplified infrastructure management.

Answer

AWS Availability Zones consist of one or more discrete data centers with redundant utility infrastructure, and they are interconnected with high-speed, low-latency, and redundant fiber-optic networks.
Availability Zones are designed to provide high availability and isolation from local failures. To achieve this, each Availability Zone is composed of one or more discrete, physical data centers, each equipped with redundant utility infrastructure. Despite being physically separated, they are interconnected by private, high-speed, low-latency fiber-optic networks to allow applications to failover seamlessly.

Step-by-Step Solution

1
Analyze the role of Availability Zones in AWS Global Infrastructure.
Identify that Availability Zones are designed for high availability, fault tolerance, and physical isolation within a Region.
This helps rule out options that associate them with wider geographic structures like Regions or smaller caching utilities like Edge Locations.
2
Evaluate the statements against the definition and physical properties of Availability Zones.
Confirm that they comprise discrete data centers and are interconnected via low-latency networks, while verifying they do not share common points of failure like power grids.
This validates the two correct answers and eliminates the distractor options.

Key Concept

AWS Availability Zones are isolated locations within a Region designed to provide fault isolation and low-latency replication.
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Topics

AWS Global Infrastructure

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