What should you use?

You need to meet the technical requirements for controlling access to Azure DevOps.

What should you use?
A . Azure Multi-Factor Authentication (MFA)
B . on-premises firewall rules
C . conditional access policies in Azure AD
D . Azure role-based access control (Azure RBAC)

Answer: C

Explanation:

Scenario: Access to Azure DevOps must be restricted to specific IP addresses.

Azure DevOps is authenticated through Azure Active Directory. You can use Azure AD’s conditional access to prevent logins from certain geographies and address ranges.

Reference: https://www.rebeladmin.com/2018/08/step-step-guide-configure-location-based-conditional-access-policies/