MS-721 Question #172: Real Exam Question with Answer & Explanation

Question

You have a Microsoft 365 E5 subscription that uses Microsoft Teams. You have a legacy PBX solution for audio conferencing that contains a dial-in toll number. You need to migrate the dial-in toll number to Teams meetings. What should you do first?

Options

• AFrom the Microsoft 365 admin center, assign Teams Audio Conferencing add-on licenses to the
• BFrom the Microsoft 365 admin center, assign Teams Phone Standard add-on licenses to the
• CFrom the Microsoft Teams admin center, select Phone numbers, select Numbers, and then select
• DFrom the Microsoft Teams admin center, select Phone numbers, select Numbers, and then select

Explanation

{"question_number": 2, "correct_answer": "C", "explanation": "To migrate an existing phone number from a legacy PBX to Microsoft Teams, the first step is to port (transfer) the number from the current carrier to Microsoft. This is done from the Microsoft Teams admin center under Phone numbers > Numbers > Port. Porting initiates the number transfer process before any licenses or configurations can be applied to that number. Assigning Audio Conferencing licenses (A) or Teams Phone Standard licenses (B) cannot be done until the number exists in Teams. Licenses are assigned after the number is successfully ported.", "generated_by": "claude-sonnet", "llm_judge_score": 3}

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