MS-700 Practice Exam 2025 – Complete Guide for Microsoft 365 Teams Admin Certification

Configuring the External access settings is the correct action to restrict user communication specifically to five supplier companies. External access in Microsoft Teams allows users to communicate with people outside their organization. By defining the external access settings, you can specify which external domains or users are permitted to engage in communication with your users. This targeted approach enables you to effectively manage who can connect with your organization, ensuring that only the designated five supplier companies are allowed.

The other choices address different aspects of Teams’ communication features. Guest access settings enable external users to participate in teams and channels but do not restrict communication just to specified companies. A messaging policy allows for the customization of messaging capabilities but does not specifically manage external communications. Org-wide Teams settings pertain to general settings applicable to the entire organization but are not focused on restricting communication to specific external entities. Thus, relying on the External access settings is the most suitable option for achieving the stated goal.