When multiple virtualized network zones (such as VRFs, virtual firewalls, or logical partitions) are consolidated onto a single physical device, the primary concern is:
A (Fate sharing): A single hardware failure, software crash, or resource exhaustion event could simultaneously impact all virtualized zones, creating a shared risk across multiple otherwise isolated services.
Other options explained:
B: CPU resource allocation can be controlled via resource management but is not the primary risk.
C: Congestion control is typically a traffic engineering issue, not a virtualization risk.
D: Security isolation can be maintained through proper virtualization boundaries.
E: Bandwidth can be managed through QoS and resource allocation.
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