You have two servers named Server1 and Server2. A firewall

exists between Server1 and Server2.

Both servers run Windows Server Update Services (WSUS). Server1 downloads updates from Microsoft update.

Server2 must synchronize updates from Server1.

Which port should to open on the firewall?

A. 80

B. 443

C. 3389

D. 8530

Explanation

On WSUS 6.2 and later (at least Windows Server 2012), port 8530 for HTTP and 8531 for HTTPS

References:

https://technet.microsoft.com/en-us/library/hh852346(v=ws.11).aspx