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ISACA Certified Information Systems Auditor · Isaca
Select one answer.
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The hypervisor is the most critical layer in a virtualized environment . If it’s not protected, an attacker could gain control of all guest systems. ISACA typically views unprotected hypervisors as the greatest risk because it compromises the entire server farm, not just individual VMs.
D should be right answer
While implementing antivirus software only on the guest operating system (option B) is also a concern as it may not provide comprehensive protection for the entire virtual server environment, the risk associated with having multiple guest operating systems on one virtual server (option C) is generally greater due to the increased attack surface and complexity.