H13-821_V3.0 · Question #395
High availability on the cloud is one of the factors that need to be considered when designing the architecture. In the actual design process, multiple ECS instances are often run on the backend of…
The correct answer is A. Single Point. Option A is correct because running multiple ECS (Elastic Compute Service) instances behind a load balancer eliminates a Single Point of Failure (SPOF) -- a component whose failure would bring down the entire system. When only one server handles all traffic, any crash, hardware…
Question
High availability on the cloud is one of the factors that need to be considered when designing the architecture. In the actual design process, multiple ECS instances are often run on the backend of the elastic load balancing EB to avoid () failures.
Options
- ASingle Point
How the community answered
(33 responses)- A100% (33)
Explanation
Option A is correct because running multiple ECS (Elastic Compute Service) instances behind a load balancer eliminates a Single Point of Failure (SPOF) -- a component whose failure would bring down the entire system. When only one server handles all traffic, any crash, hardware fault, or maintenance window causes a complete outage. By distributing traffic across multiple instances, the load balancer can route requests away from any failed instance, keeping the application available. Since only one choice is presented here, there are no distractors to evaluate.
Memory tip: Think of "Single Point" as the "weak link in a chain." A chain (your system) is only as strong as its weakest single link -- load balancing adds parallel links so breaking one does not break the chain.
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