You need to modify the Office 365 subscription to support the planned changes for the devices that connect from untrusted networks.
You enable Azure multi-factor authentication for all of the users in the subscription.
What should you do next from the Office 365 portal?
A. Add a trusted domain.
B. Set the Trusted IPs to 10.0.1.0/24 and 10.0.2.0/24.
C. Set the Trusted IPs to 192.168.1.100/32 and 192.168.2.100/32
D. Convert the fabrikam.com domain to a federated domain.
Answer: C
Explanation:
Adding trusted IP’s is excluding a set of addresses from MFA. MFA is hosted outside your LAN so you communicate with the service using your public IP’s.
The case tells us that the external IP’s are 192.168.1.100 and 192.168.2.100 so these should be added as trusted IP’s in MFA.
Explanation: https://docs.microsoft.com/nl-nl/azure/multi-factor-authentication/multi-factor-authenticationwhats-next#trusted-ips