Which of the following options belong to the core elements of the IATF (Information Assurance Technology Framework) model? (Multiple choices)

In the Huawei SDSec solution, which layer of equipment does the firewall belong to?

_______ is a defect in the specific implementation of hardware, software, and protocol or system security strategy, which can enable an attacker to access or destroy the system without authorization.

Using the _____ method of the web proxy, the virtual gateway encrypts the real URL that the user wants to access and can adapt to different terminal types.

Gratuitous ARP can be used to detect if _____address conflicts, and it can also refresh the MAC address table of the switch.