Which configuration setting prevents a packet sniffing program from analyzing network packets on the virtual switch?

Promiscuous Mode, when set to Reject, prevents a virtual network adapter from forwarding all traffic seen on the virtual switch to the guest operating system. This explicitly blocks packet sniffing tools from analyzing traffic not specifically addressed to the VM, thereby enhancing network security.

Promiscuous Mode set to Accept allows a virtual machine's network adapter to see all traffic on the virtual switch segment, which enables packet sniffing programs to analyze network packets, directly contradicting the goal of preventing it.

Forged Transmits set to Accept allows a virtual machine to send packets with a source MAC address different from its own, which is related to MAC spoofing and impersonation, not preventing packet sniffing.

Forged Transmits set to Reject prevents a virtual machine from sending packets with a source MAC address different from its own, which enhances security against MAC spoofing but does not prevent a VM from receiving and analyzing all network packets.