Question 170
A company places two redundant application servers in one Availability Zone and calls that zone fault tolerance. What is the MOST appropriate AWS-related decision here?
Explanation
Correct Answer
Use more than one AZ when the business requires protection from an AZ outage. This choice addresses the specific business requirement: Multiple machines inside one AZ can still share the same zone failure domain. A clear way to confirm success is: A simulated AZ outage leaves at least one healthy instance in another AZ. To sustain the result: Inventory shared storage and networking dependencies by AZ.
Incorrect Answers
AWS services and features are not automatically supported in every Region. In this question, however, multiple machines inside one AZ can still share the same zone failure domain. The answer that meets the requirement is: Use more than one AZ when the business requires protection from an AZ outage.
A Region contains multiple AZs and provides a geographic operating boundary. In this question, however, multiple machines inside one AZ can still share the same zone failure domain. The answer that meets the requirement is: Use more than one AZ when the business requires protection from an AZ outage.
Edge locations provide selected network and caching functions rather than every regional service. In this question, however, multiple machines inside one AZ can still share the same zone failure domain. The answer that meets the requirement is: Use more than one AZ when the business requires protection from an AZ outage.