Zero Trust connections are designed to be independent of network location as a source of trust. The Zero Trust Exchange brokers access based on identity, device posture, application entitlement, and policy, not on whether the user is inside a static corporate network. Option C (They are independent of any network for control or trust) is correct because control and trust come from policy and context, not from the underlying network.

Why the other options are incorrect:

A. They require that SSH inspection be enabled: RDP, SSH, and VNC are privileged remote access protocols for desktop, shell, and graphical administration.

B. They are dependent on a fixed / static network environment: A fixed network dependency is the legacy trust model. Zero Trust removes that dependency by making identity, context, and application policy the trust boundary.

D. They require IPv6: IPv6 may be supported in parts of a network, but Zero Trust connections do not require IPv6 as a design principle.