Which of the following are requirements for configuring the Web Application Proxy role service on Windows Server? $($Choose two.$)$

a$.$ The database must be hosted by an external SQL server.

b$.$ You must have a functioning AD FS deployment on the network.

c$.$ Two NICs are needed: one NIC for the Internet and the other connected to the private network.

d$.$ The Web Application Proxy must be installed on a standalone server.