Microsoft 365 Administrator Expert MS-102 Practice Question
You manage a Microsoft 365 tenant for Contoso. Partner users in several external domains frequently exchange email and meeting invitations with your staff. You must display each partner address in the global address list, allow internal users to send calendar sharing invitations, avoid consuming any Microsoft 365 licenses, and prevent the partners from being able to sign in to your tenant. Using only the Microsoft 365 admin center, which object type should you create to meet all requirements?
Mail contacts are mail-enabled directory objects whose primary SMTP address is an external domain. They appear in the global address list, can receive calendar sharing invitations, do not require a Microsoft 365 license, and cannot authenticate to the tenant because they have no sign-in credentials.
Guest users and mail users both have sign-in credentials; mail users also require an Exchange Online license. Shared mailboxes are internal objects that still consume mailbox storage in Exchange Online and do not point to an external address, so they do not satisfy the requirement to preserve the partner's own email system.
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Microsoft 365 Administrator Expert MS-102
Deploy and manage a Microsoft 365 tenant
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