Which would require a Layer 7 Firewall?

A. block a specific port

B. block a subnet range

C. block a host

D. block a specific application

Explanation:

Reference: https://docs.vmware.com/en/VMware-NSX-T-Data-Center/3.1/administration/GUID-8F3CB282-B38E-49E1-951A-7D6B972B1FB7.html