Microsoft 365 Certified Teams Administrator Associate (MS-700) Practice Exam

Modifying external collaboration settings is effective in preventing guest users from inviting additional guests in Microsoft Teams collaboration. This method allows administrators to control how external users can interact with their Teams environment. By adjusting these settings within the Azure Active Directory (Azure AD), administrators can specify whether guest users have permissions to invite others, thereby ensuring that only designated individuals can gain access to the Teams environment. This approach allows for a more secure environment by limiting the scope of collaboration to specifically approved participants.

In contrast, other options might address different aspects of team and guest management but don't specifically limit the ability of guest users to invite additional guests. For instance, applying guest access policies can set different permissions for guests, but they do not directly prevent them from inviting others. Similarly, conditional access policies focus on authentication and access conditions rather than limiting the invite capabilities of existing guests. Limiting guest application access controls what apps guests can use but is unrelated to their ability to invite additional users. Thus, modifying external collaboration settings is the most direct method for managing guest invitations effectively.