MS-721 Practice Question 3326
Exam: MS-721
Domain: Plan and design collaboration communications systems
Difficulty: hard
When planning public IP addresses for an enterprise SBC connecting to Direct Routing, which public DNS requirement must be met for the SBC Fully Qualified Domain Name (FQDN)?
Answer Options
A
Public DNS A record matching a public commercial certificate CN/SAN
B
Private non-routable .local DNS record
C
Wildcard certificate from an untrusted internal CA
D
Dynamic IP address assigned via consumer DHCP
Correct Answer
A: Public DNS A record matching a public commercial certificate CN/SAN
Explanation
The SBC FQDN must have a public DNS A record matching the common name (CN) or Subject Alternative Name (SAN) of a commercial public certificate signed by a Microsoft-trusted Certificate Authority.