What three design principles help to ensure high availability? (Choose three.)Select one or more:use encryptiondetect failures as they occurprovide for reliable crossoverensure confidentialityeliminate single points of failurecheck for data consistency
Question
What three design principles help to ensure high availability? (Choose three.)Select one or more:use encryptiondetect failures as they occurprovide for reliable crossoverensure confidentialityeliminate single points of failurecheck for data consistency
Solution
The three design principles that help to ensure high availability are:
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Detect failures as they occur: This principle is about having a system in place that can quickly identify when a failure occurs. This could be through monitoring systems or alerts that notify you when something goes wrong. The faster a failure is detected, the quicker it can be addressed and downtime can be minimized.
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Provide for reliable crossover: This principle is about ensuring that if a system does fail, there is a backup system that can take over with minimal disruption. This could be through redundant systems or failover clusters. The goal is to make the transition from the failed system to the backup system as seamless as possible.
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Eliminate single points of failure: This principle is about designing your system in such a way that there is no one component whose failure would cause the entire system to fail. This could be achieved through redundancy, where each critical component has a backup, or through distribution, where the system is spread out across multiple components so that the failure of one does not bring down the whole.
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High Availability or Failover Clusters
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