Greatest Risk to Enforceability of Networking Policies in a Virtualized Environment

D.

In a virtualized environment, there are various factors that can pose a risk to the enforceability of networking policies. Networking policies are rules and procedures set in place to govern the access, use, and sharing of network resources.

Out of the options provided, the greatest risk to the enforceability of networking policies in a virtualized environment is the lack of visibility into the networks (Option D). This is because virtualization technology allows multiple virtual machines (VMs) to run on a single physical host, which can result in multiple network layers that are difficult to monitor and control.

Virtualized environments are designed to be dynamic, with VMs being created, moved, and deleted frequently. This can make it challenging to maintain accurate and up-to-date network policies that are consistent with the organization's security and compliance requirements. Without visibility into the networks, it can be difficult to enforce policies related to access controls, traffic filtering, and network segmentation.

Option A, transmission of data on public networks, is a risk that is relevant to any type of network environment, including virtualized ones. However, this risk is mitigated through the use of encryption, virtual private networks ( VPNs), and other security measures.

Option B, lack of encryption for data at rest, is a risk that is specific to data storage rather than networking. It can be addressed through encryption, access controls, and monitoring of data storage devices.

Option C, the use of a public key infrastructure (PKI), is a security measure that can enhance the enforceability of networking policies in a virtualized environment. PKI provides a secure and reliable way to manage digital certificates and keys, which are used for authentication, encryption, and digital signatures. However, the use of PKI does not directly address the risk of lack of visibility into the networks.