Which two are enabled by Oracle Cloud Infrastructure Fault Domains? (Choose two.)
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A. B. C. D. E.BD.
https://blogs.oracle.com/cloud-infrastructure/using-availibility-domains-and-fault-domains-to-improve-application-resiliencyOracle Cloud Infrastructure (OCI) Fault Domains are a key feature of OCI's high availability and fault tolerance capabilities. They enable you to design and deploy applications that are resilient to hardware and other failures.
Answer B and D are enabled by OCI Fault Domains. Here's why:
B. Protect against unexpected hardware or power supply failures:
OCI Fault Domains allow you to distribute your compute, network, and storage resources across physically isolated locations within an Availability Domain (AD). Each Fault Domain is a grouping of hardware and infrastructure within an AD that share a common power and network infrastructure. By distributing your resources across multiple Fault Domains within an AD, you can ensure that your application remains available even if there is a hardware or power supply failure in one Fault Domain. If one Fault Domain goes down due to a hardware or power supply failure, the other Fault Domains will continue to operate normally, ensuring that your application remains available.
D. Protect against planned hardware maintenance:
OCI Fault Domains also help you protect your applications against planned maintenance events. By distributing your resources across multiple Fault Domains, you can ensure that only a subset of your resources are impacted by a maintenance event. For example, if you have two compute instances spread across two Fault Domains, and one Fault Domain undergoes planned maintenance, you can ensure that the other instance remains available and continues to serve your customers.
Answer A, C, and E are not directly enabled by OCI Fault Domains. Here's why:
A. To mitigate the risk of large scale events such as earthquakes:
While OCI Fault Domains can help mitigate the risk of hardware and power supply failures, they are not specifically designed to address large scale events such as earthquakes. That being said, by distributing your resources across multiple Fault Domains within an AD, you can ensure that your application remains available even if there is a natural disaster or other large scale event in one Fault Domain.
C. To meet requirements for legal jurisdictions:
OCI Fault Domains are not specifically designed to meet requirements for legal jurisdictions. However, by using OCI Fault Domains, you can ensure that your application remains available even if there is a legal requirement to keep your data or resources within a specific geographic region.
E. Build replicated systems for disaster recovery:
While OCI Fault Domains are not specifically designed for disaster recovery, they can be used as part of a disaster recovery strategy. By distributing your resources across multiple Fault Domains and across multiple Availability Domains, you can ensure that your application remains available even in the event of a disaster in one geographic region. Additionally, you can use OCI's native disaster recovery services, such as Disaster Recovery and Maximum Availability Architecture (MAA), in conjunction with Fault Domains to ensure that your application is protected against disasters.