MS-721 Exam Preparation Material | Collaboration Communications Systems Engineer

Prepare for the MS-721 with reliable study materials, practice questions, and key exam insights.

Prepare for the MS-721 Collaboration Communications Systems Engineer exam with CertQueen's independently developed study resources. Review important concepts, practice scenario-based questions, and use clear explanations to identify areas that require further study.

Question#1

You have a Microsoft Teams Phone deployment
You assign a Microsoft 365 E5 license lo a user named User1.
You need to enable User1 for Direct Routing.
Which PowerShell cmdlet should you run?

A. Set-CsCallingLineIdentity

B. Set-CsUser

C. Set-CsOnlineVoiceUser

D. Set-CsUserServicesPolicy

Question#2

HOTSPOT
You need to assign the correct licenses to a sales team manager in the New York office who is scheduled to migrate from Skype for Business Server to Teams.
Which three licenses should you assign? To answer, select the licenses in the answer area. NOTE: Each correct selection is worth one point.

Explanation:
Reference: https://docs.microsoft.com/en-us/microsoftteams/what-are-communications-credits

Question#3

HOTSPOT
The network meeting settings for Microsoft Teams are configured as shown in the following exhibit.

Use the drop-down menus to select the answer choice that completes each statement based on the information presented in the graphic. NOTE: Each correct selection is worth one point.

Question#4

You have a Teams Phone deployment that uses Direct Routing and a legacy PBX.
You need to leverage the a PBX during outbound calls from scheduled Teams meeting.
What should you create?

A. an Audio Conferencing policy

B. an Audio Conferencing routing policy

C. a meeting broadcast policy

Explanation:
Enable the routing of Teams meeting dial-out calls through Direct Routing
Teams meeting dial-out calls are initiated from within a meeting in your organization to PSTN numbers, including call-me-at calls and calls to bring new participants to a meeting.
To enable Teams meeting dial-out routing through Direct Routing to on-network users, you need to create and assign an Audio Conferencing routing policy called "OnlineAudioConferencingRoutingPolicy".
Note:
Direct Routing lets you connect a supported, customer-provided Session Border Controller (SBC) to Phone System. With this capability, you can configure on-premises Public Switched Telephone Network (PSTN) connectivity with Microsoft Teams client, as shown in the following diagram:

Reference:
https://learn.microsoft.com/en-us/microsoftteams/audio-conferencing-on-network
https://learn.microsoft.com/en-us/microsoftteams/direct-routing-plan

Question#5

You have a Microsoft Teams Phone deployment.
You need to ensure that a user named user1@contoso.com can call international phone numbers by using Direct Routing.
Which type of policy should you use?

A. a caller ID policy

B. a calling policy

C. a teams policy

D. a voice routing policy

Exam Code: MS-721
Q & A: 274 Q&As Updated: Oct 07,2026

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What This MS-721 Study Resource Helps You Do

Review Key Concepts

Review the technologies, products, processes, and practical skills covered by the current MS-721 exam objectives.

Practice Scenario-Based Questions

Work through independently developed questions designed to strengthen your understanding of technical scenarios and decision-making.

Identify Knowledge Gaps

Use your results and the provided explanations to find weaker areas and focus your study more effectively.

How to Use This MS-721 Preparation Material

Review the Exam Scope

Start by reviewing the topics covered by the MS-721 exam. Compare them with the official exam objectives to understand the required technologies, operational tasks, and practical skills, then identify the areas that deserve the most attention.

Practice Independently

Complete a focused set of practice questions for each topic. On your first attempt, avoid referring to notes, answers, or other study resources so that you can evaluate your current understanding more accurately.

Study the Explanations

Review the answers and explanations after completing each practice session. Understand why the correct option is appropriate for the given scenario and why the other options may be incorrect or less suitable.

Close Knowledge Gaps

Keep track of incorrect answers, unfamiliar concepts, and weaker knowledge areas. Review these topics using official documentation and practical experience, then answer the related questions again to reinforce your understanding and monitor your progress.

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Exam Code: MS-721
Q & A: 274 Q&As
Updated: Oct 07,2026