A company wants to configure the environment to allow passive network monitoring. To avoid disrupting the sensitive network, which of the following must be supported by the scanner's NIC to assist…

Port bridging connects two network segments at the data link layer, which is not primarily used for passive, non-disruptive monitoring of existing network traffic.

Tunnel all mode is typically a VPN configuration where all network traffic is routed through an encrypted tunnel, which is unrelated to passive network monitoring.

Full-duplex mode allows simultaneous two-way communication on a network link, which is a standard operational mode for NICs and does not directly facilitate passive monitoring of all traffic.

Port mirroring, also known as SPAN (Switched Port Analyzer), is a network switch feature that duplicates network traffic from one or more source ports or VLANs to a designated destination port. This allows a monitoring device, such as a scanner, to passively analyze all traffic without interfering with the live network operations or requiring the scanner to be inline with the production traffic.

Promiscuous mode allows a NIC to capture all traffic it receives, regardless of the destination MAC address, but it still requires the traffic to be delivered to the NIC first, typically via port mirroring or a network TAP, to monitor traffic not addressed to it on a switched network.