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Which of the following is an accurate characteristic of virtual private networks (VPNs) or their features?
A. VPNs offer secure communications over wired and wireless networks alike.
B. Establishing a VPN is similar to creating a fully secure multiaccess network.
C. Wireless networks do not require VPNs when technologies such as WPA3-GCMP are used for confidentiality and integrity.
D. Tunnel mode is recommended when the original IP header is to be used for routing across the underlying internetwork.