The setting that is enabled in the screenshot is 'Turn off multicast name resolution'. By turning off multicast name resolution, the system mitigates LLMNR (Link-Local Multicast Name Resolution) poisoning attacks. LLMNR is a protocol that allows IPv4 and IPv6 hosts to perform name resolution for hosts on the same local link. Disabling it can help prevent attackers from intercepting and responding to LLMNR requests with false information, which is a technique used in LLMNR poisoning attacks. Therefore, the setting mitigates LLMNR poisoning.