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A virtual firewall that controls allowed inbound and outbound traffic on a single VM in a cloud provider is most commonly called:
AAn object storage policy
BA billing budget alert
CA security group (AWS / GCP) or Network Security Group (Azure)
DA managed Kubernetes control plane
Answer & Solution
Correct answer: C. A security group (AWS / GCP) or Network Security Group (Azure)
Security groups / NSGs are the per-VM (per-ENI) stateful firewall in each major cloud. The other options describe managed services and governance, not L4 firewalls.
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