Collaboration Communications Systems Engineer — Question 208

You are planning a Microsoft Teams Phone deployment that will use Direct Routing.

You need to allow traffic from Microsoft 365 to a Session Border Controller (SBC).

Which IP address ranges should you allow through the firewall?

Answer options

• A. 8.8.8.8/32 and 4.4.2.2/32
• B. 52.112.0.0/14 and 52.122.0.0/15
• C. 10.10.0.0/24 and 10.11.0.0/24
• D. 132.245.0.0/16 and 40.104.0.0/15

Correct answer: B

Explanation

The correct answer is B because these IP address ranges are specifically allocated for Microsoft 365 services, which includes Teams traffic. The other options are incorrect as they either consist of public DNS servers or private IP address ranges that do not correspond to Microsoft 365's infrastructure.