Collaboration Communications Systems Engineer (MS-721) Exam Practice Questions & Study Guide 2026

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What is MS-721 — Collaboration Communications Systems Engineer?

The MS-721 exam is a Microsoft certification that validates your skills and knowledge as a Collaboration Communications Systems Engineer professional. Whether you're looking to advance your career, get a pay raise, or simply prove your Azure expertise — this certification is your next big step.

Passing MS-721 tells employers one thing — you know your stuff. And with the cloud industry growing faster than ever in 2026, Azure certified professionals are in higher demand than ever before.

Everything You Need to Pass MS-721 — In One Place

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Frequently Asked Questions (FAQ) About MS-721

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MS-721 is a challenging exam — but with the right preparation it's absolutely passable on your first attempt. Our practice tests are designed to match the exact difficulty level of the real exam so there are no surprises on exam day.

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The MS-721 exam typically contains between 40 to 60 questions. Our practice tests cover all question types including multiple choice, drag and drop, and case studies.

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Most professionals pass MS-721 after 2 to 4 weeks of focused preparation using our practice tests. The more consistently you practice, the faster you'll be ready.

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Microsoft MS-721 Sample Questions

Question 1

You have a Microsoft Teams Phone deployment.You need to ensure that users can enter their emergency address into the Teams client.Which setting should you configure?

A. External location lookup mode
B. Trusted IPs
C. Optimized device dialing
D. Location based routing

Answer: A

Question 2

Your company uses Microsoft Teams live events for online employee training sessions.During the last live event, there were 100 attendees in a remote office. The attendeesreported connectivity issues.You discover that the internet connection at the remote office was saturated.You need to minimize the impact of live events on the internet links of the remote office.What should you do?

A. Configure a network roaming policy.
B. From Meeting policies, modify Media bit rate (KBs).
C. Configure Quality of Service (QoS).
D. Configure a video distribution provider eCDN.

Answer: D

Question 3

You are deploying Teams Rooms to a Windows device.You need to prevent meeting attendees from using room remote in the Teams mobile app.What should you configure in the Microsoft Teams admin center?

A. Supported meeting mode
B. Coordinated Meetings
C. Front row experience
D. Bluetooth beaconing

Answer: D
Explanation:
Manage a Microsoft Teams Rooms console settings remotely with an XML configuration
file
This article discusses remote management of the default settings used by a Microsoft
Teams Rooms device. It discusses how to create a master settings file and links to
discussions of how to place them as needed on Teams Rooms.
It is possible for you to change default settings of Teams Rooms by updating a master XML
file and sending copies to the remote Teams Rooms devices.
Create an XML configuration file
Any text editor can be used to create a settings file. The XML Elements table explains the
elements shown in this sample SkypeSettings.xml (required file name) configuration file.
<SkypeSettings>
<AutoScreenShare>1</AutoScreenShare>
<HideMeetingName>1</HideMeetingName>
<AutoExitMeetingEnabled>true</AutoExitMeetingEnabled>
<AudioRenderDefaultDeviceVolume>70</AudioRenderDefaultDeviceVolume>
* Details omitted*
<AllowRoomRemoteEnabled>true</AllowRoomRemoteEnabled>
Incorrect:
Not B: If you have one or more Microsoft Teams Rooms on Windows devices or Surface
Hubs in a meeting room, you can set up Coordinated Meetings. Coordinated Meetings lets
you set up your Teams Rooms on Windows devices and Surface Hubs so that when you
join a meeting on one device, the other devices in the room are also joined to the same
meeting. You can configure your cameras, speakers, and microphones so that the ones
that give participants the best experience are enabled while others are disabled. This
avoids the dreaded echo and feedback noise participants can experience when adding
multiple devices to a meeting Not C: Front Row layout in Teams Rooms– Additional functionality with the Front Row
experience, a layout for hybrid meetings that enables users to see remote attendees at eye
level and on dual screens. Users can see Chat in the right panel and participants with
raised hands on the left panel. And, Meeting Chat is added in the Gallery, Large Gallery, and Together Mode layouts.
Reference:
https://learn.microsoft.com/en-us/microsoftteams/rooms/xml-config-file
https://learn.microsoft.com/en-us/microsoftteams/rooms/coordinated-meetings

Question 4

Your company has offices in London and VancouverThe company has a Teams Phone deployment that uses Calling Plans.The London office contains a user named User1. User1 moves from the London office to the Vancouver office.You need to update the phone number and emergency location of User1 to match the newoffice.What should you do first?

A. Run New-CsTeamsEmergencyCallingPolicy -Identity Vancouver.
B. Modify the current Usage location for User1.
C. Run Grant-CsTeamsEmergencyCallingPolicy -Identity Vancouver.
D. Add a new emergency location for User1.

Answer: D
Explanation:
Assign an emergency location
You can assign emergency locations for your organization in the Microsoft Teams admin
center or by using PowerShell.
To assign an emergency location, be sure the location, users, and phone numbers are all
in the same country.
Using the Microsoft Teams admin center
In the left navigation of the Microsoft Teams admin center, click Locations >
Emergency addresses.
Click Add.
Enter a name and description for the location.
Select the country or region, and then enter the address.
If the address isn't found and you want to manually edit the address, turn on Edit
the address manually.
Click Save.
Reference:
https://learn.microsoft.com/en-us/microsoftteams/add-change-remove-emergency-locationorganization

Question 5

You have a new Microsoft Teams Rooms on Windows deployment.You need to enable the automatic acceptance of proximity-based meeting invitations.What should you configure?

A. front row
B. a meeting policy
C. Bluetooth beaconing
D. coordinated meetings
E. a customization policy

Answer: B

Question 6

You have a Teams Phone deployment that uses Direct Routing on a single Session BorderController (SBC).Users report that outbound PSTN calls are failing, but inbound PSTN calls are successful.When you review the SBC logs, you discover that Microsoft is responding to SIP optionrequests, but is NOT sending SIP option requests.What is the cause of the issue?

A. The online PSTN gateway is disabled.
B. An SBC certificate is expired.
C. An external DNS entry is missing from the FQDN of the SBC.
D. The phone numbers of the users are defined by running the NewcsTeamsUnassignedNuirtoerTreatment cmdlet.

Answer: A
Explanation:
Issues that affect outbound direct routing calls
You might experience various issues when you use Direct Routing to make outbound calls
from a Microsoft Teams client to a Session Border Controller (SBC). These issues include
the following:
An incorrect caller ID is displayed to the call recipient.
A connection to the SBC is not established.
Some users in a tenant are unable to make calls.
No users in a tenant are able to make calls.
No users are able to make calls
If none of the users are able to make calls, the calls are probably not reaching the SBC.
Check for one of the following causes.
Cause 1
Teams has a disabled gateway.
Resolution 1
Use the Microsoft Teams admin center to make sure that the gateway that's used by
Teams is available and enabled.
Reference:
https://learn.microsoft.com/en-us/microsoftteams/troubleshoot/phone-system/directrouting/
issues-with-outbound-calls

Question 7

Your company deploys 200 Microsoft Teams Rooms on Windows systems.You are evaluating whether to purchase the Microsoft Teams Rooms Premium license forthe rooms.Which two actions require the Microsoft Teams Rooms Premium license? Each correctanswer presents a complete solution.NOTE: Each correct selection is worth one point

A. Download device logs.
B. View peripheral health.
C. Get reporting insights into room usage and participant count
D. Postpone updates until a certain date.
E. Modify the Direct guest jam settings

Answer: B,C
Reference: https://docs.microsoft.com/en-us/microsoftteams/rooms/microsoft-teamsrooms-
premium

Question 8

You have a Microsoft Teams Phone deployment that uses Direct Routing.You connect a new Session Border Controller (SBC).You need to verify that all the voice features work as expected for calls that traverse theSBCWhat should you use?

A. the SIP Tester client script
B. Microsoft 365 network connectivity test tool
C. Microsoft Teams Network Assessment Tool
D. Microsoft Remote Connectivity Analyzer

Answer: C

Question 9

Your company hires a new employee in Lisbon.You assign a Microsoft 365 E3 license to the employee.The employee must schedule meetings that will include customers in Lisbon. Thecustomers will dial in to the meetings by using PSTN.You need to ensure that the employee can send meeting invitations that include a dial-inconferencing bridge. The bridge must be set to a local number in Lisbon instead of thecompany's default dial-in conferencing bridge number.Which two actions should you perform? Each correct answer presents part of the solution.NOTE: Each correct selection is worth one point.

A. From Users in the Microsoft Teams admin center, edit the Audio conferencing settingsof the employee.
B. From the Microsoft Teams admin center, modify the settings of the default conferencingbridge.
C. From the Microsoft 365 admin center, assign an Auto Conferencing add-on license tothe employee.
D. From the Microsoft 365 admin center, set the usage location of the employee toPortugal.

Answer: B,C
Reference:
https://docs.microsoft.com/en-us/microsoftteams/audio-conferencing-in-office-365
https://docs.microsoft.com/en-us/microsoftteams/change-the-phone-numbers-on-youraudio-
conferencing-bridge

Question 10

You have a Microsoft 365 E5 subscription that uses Microsoft Teams Phone.You have 10 SIP devices that were used in a previous phone system.You verify compatibility with Teams Phone.You need to ensure that users can call from SIP devices in Teams.What should you do?

A. Assign a Teams Phone Standard add-on license to each SIP device.
B. Configure a configuration profile.
C. Assign a Microsoft Teams Shared Devices license to each SIP device.
D. Configure a calling policy.

Answer: D

Microsoft MS-721 Exam Reviews

    David         Jul 05, 2026

Dumps4Azure made my MS-721 exam preparation very smooth. The practice questions focused on real Microsoft Teams Voice scenarios.

    Baker         Jul 04, 2026

I passed the MS-721 exam on my first attempt thanks to Dumps4Azure. The study material was clear, practical, and easy to follow.

    Anna Nelson         Jul 04, 2026

Great experience using Dumps4Azure for the MS-721 exam. The questions covered all essential Teams Voice configuration and management topics effectively.

    Ryan         Jul 03, 2026

The MS-721 practice tests from Dumps4Azure helped me identify weak areas and boost my confidence before the exam.

    Carter         Jul 03, 2026

I really liked the quality of Dumps4Azure content. The MS-721 material was accurate, updated, and perfect for revision.

    Laura         Jul 02, 2026

Dumps4Azure is a reliable platform for certification prep. The MS-721 questions felt very close to the real exam format.

    Mitchell         Jul 02, 2026

Thanks to Dumps4Azure, my MS-721 exam preparation was smooth and stress-free. The explanations were clear and helpful.

    Jonathan         Jul 01, 2026

Excellent value for money. Dumps4Azure provided relevant and well-organized practice questions for the MS-721 exam.

    Perez         Jul 01, 2026

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    Megan         Jun 30, 2026

Dumps4Azure delivered exactly what I needed for the MS-721 exam. Solid practice questions and excellent preparation support.

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MS-721 Dumps

Collaboration Communications Systems Engineer (MS-721) Exam Practice Questions & Study Guide 2026

What is MS-721 — Collaboration Communications Systems Engineer?

Everything You Need to Pass MS-721 — In One Place

Why Thousands of Professionals Choose Dumps4Azure for MS-721?

How hard is the MS-721 exam?

How many questions are in the MS-721 exam?

Are 2026 practice questions updated?

How long should I study for MS-721?

Do you offer a free demo for MS-721?

What if I fail MS-721 after using your material?

Dump4Azure Exam Package – PDF vs Testing Engine

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