ISC2 Certified Cloud Security Professional (CCSP) Practice Question
Your company plans to deploy a mission-critical SaaS offering in a public cloud region that advertises three availability zones. Provider documentation shows that every zone has two 100-Gb circuits to the internet delivered by different carriers. During the physical-environment assessment, which additional detail would best confirm that a single backhoe accident cannot simultaneously sever connectivity to all three zones?
Each carrier's fiber enters every availability zone through completely separate conduit routes that terminate in different meet-me rooms.
Edge routers in each zone are equipped with dual supervisor modules operating in stateful switchover mode.
Every 100-Gb circuit is protected with MACsec to prevent in-flight interception of traffic.
The cloud provider establishes external BGP sessions from each zone using a unique autonomous system number.
Using different carriers reduces the likelihood of a carrier-specific outage, but a construction accident can still cut both carriers' fibers if they follow the same buried route or enter the same building vault. Verifying that each circuit enters the data-center campus through geographically separate conduit systems and terminates in different meet-me rooms confirms true physical path diversity. The other options address logical routing (separate ASNs), link-layer encryption (MACsec), or device redundancy (dual supervisors); none of those prevent a common-mode failure caused by a single trenching incident.
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ISC2 Certified Cloud Security Professional (CCSP)
Cloud Platform & Infrastructure Security
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