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Microsoft · MS-721 · Associate

Collaboration Communications Systems Engineer (MS-721) — Practice Questions and Mock Exam

The MS-721 certification validates skills in planning, designing, configuring, and managing Microsoft Teams voice, video, meetings, and certified devices.

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Official MS-721 exam: 700 out of 1000 points to pass.

Checked against Microsoft · August 2026 · Current exam version

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Implement and configure Teams Phone1 / 5

A Teams Phone user needs to enable call delegation. Where is this feature controlled at the admin level?

AlexFull explanation from Alex

Per Microsoft docs, calling policies control call delegation. The 'Delegation for inbound and outbound calls' toggle in calling policies (Voice > Calling policies) determines whether users can configure delegates. Dial plans handle number normalization, not feature access. Voicemail policies govern voicemail settings like transcription and greeting. Voice routing policies contain PSTN usage records for Direct Routing call routing. Only calling policies manage the delegation feature toggle.

Sourcelearn.microsoft.com

Configure and manage Teams Rooms and devices3 / 5

A Teams phone with a Microsoft Teams Shared Devices license is mounted next to a warehouse loading dock. When the handset is lifted, it must automatically dial the site security desk. Where do you turn on this hotline (PLAR) behavior for the device in the Microsoft Teams admin center?

AlexFull explanation from Alex

Shared space Teams phones are managed with device configuration profiles rather than per-user policies. The profile carries the device-level calling behavior, such as the Advanced calling home screen experience and the hotline (PLAR) experience. The same hotline can also be configured locally on the device under Settings > Device settings > Admin only > Calling > Hotline, where you enter the contact or phone number to autodial and the display name shown on the home screen.

Sourcelearn.microsoft.com

Plan and design collaboration communications systems4 / 5

Fabrikam wants to eliminate USB dongles from its headset fleet because users frequently lose them and many laptops have too few USB ports. The fleet is split roughly evenly between Windows 11 laptops and macOS laptops. You must recommend a headset standard that is Certified for Microsoft Teams and preserves the Teams button and call-control experience. What should you recommend?

AlexFull explanation from Alex

Recommending Teams-certified devices requires reading the scope of a certification designation, not just its name. Certification designations carry platform boundaries and known caveats: Microsoft also notes that native Bluetooth performance depends on the host PC's Bluetooth radio, so a subset of users in high-density radio environments may still need the USB dongle. Device standards should be written per platform and per environment.

Sourcelearn.microsoft.com

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Conversation preview · MS-721

Call delegation

  1. You

    Where does an admin allow call delegation?

  2. Alex · AI tutor

    In Teams calling policies.

    Read the Microsoft documentation ↗
  3. You

    Should I look in the meeting policy instead?

  4. Alex · AI tutor

    No. This is a calling feature, so check the calling policy assigned to the user.

    Read the Microsoft documentation ↗

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MS-721 · Question excerpt

Call delegation

View the full question

A Teams Phone user needs to enable call delegation. Where is this feature controlled at the admin level?

Understand the correct answer.

Calling policies

Calling policies control whether users can use call delegation.

Read the Microsoft documentation ↗

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Your MS-721 mock exam

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Question counts and mock exam settings from the current Pass-IT catalog.

Exam domains

What you practice for MS-721.

Exam topics, relevant practice and sources you can check.

Communications and room design20–25% of the exam81 QuestionsPass-IT questions

Plan Teams meetings, telephony, meeting rooms and the network that supports them.

  • Choose meeting and event types, audio conferencing, Premium and Copilot features, and plan meeting policies, assignments and policy packages.
  • Plan Phone licensing, PSTN connectivity, Mobile, Operator Connect, SMS, billing, Shared Calling and number acquisition or porting.
  • Design call queues, auto attendants and emergency calling; select phones, branch survivability and Direct Routing controllers, compliance recording and contact-center options.
  • Design rooms for business and space needs, choose Basic or Pro and Windows or Android, select certified devices and interoperability, and plan resource accounts and Intune enrollment.
  • Assess network readiness and eCDN needs, configure topology, roaming, quality of service and media bitrate, and prepare Call Quality Dashboard data and analytics labels.
Official Microsoft objectives
Meetings, webinars and town halls15–20% of the exam69 QuestionsPass-IT questions

Configure meeting experiences, dial-in access and large events.

  • Manage meeting settings, templates, avatars, interactions and content controls; configure interoperability, recording, transcription, appointments and Premium or Copilot features.
  • Configure audio conferencing bridges, paid and toll-free numbers, user assignments and numbers shown in invitations.
  • Configure public or internal webinars, scheduling access, roles, presenter and attendee experiences, interaction and advanced features.
  • Configure town hall settings and advanced features, eCDN delivery and integration with Teams, Viva Engage and Stream.
Official Microsoft objectives
Teams Phone and call routing30–35% of the exam132 QuestionsPass-IT questions

Configure telephony policies, routing, numbers and emergency calling.

  • Configure dial plans and policies for calling, parking, caller ID, phones, mobility, voicemail, hold, blocking, unassigned numbers, recording and Shared Calling.
  • Configure resource accounts, licenses and numbers for auto attendants and queues, routing priorities, business hours, hold music, caller IDs, voice policies, callbacks and the Queues app.
  • Configure emergency locations and routing policies, map networks with Location Information Service, validate calls and addresses and troubleshoot dynamic emergency locations.
  • Assign Phone licenses, calling plans, numbers and policies to users or groups, individually or in bulk, including policy packages.
  • Configure voicemail, group pickup, forwarding, simultaneous ringing, delegation, audio conferencing and private lines.
  • Connect and validate Direct Routing session border controllers, gateways, usages and routes; configure translation, local media, branch survivability, emergency routing and number inventory, then troubleshoot routing.
Official Microsoft objectives
Room systems and shared devices20–25% of the exam108 QuestionsPass-IT questions

Deploy and maintain Teams Rooms, phones and flexible workspaces.

  • Manage device and network settings, updates, resource-account access, Intune, tags and SIP devices; monitor health and troubleshoot sign-in, provisioning, updates and proximity join.
  • Configure Android phone policies and profiles, hotline, remote deployment, displays and Intune requirements for AOSP and MDEP devices.
  • Configure Windows Rooms policy exclusions, custom displays, XML settings and peripherals.
  • Configure HDMI and content cameras, casting, proximity and guest join, room remote controls, hot desking and AI voice or video features.
  • Define and publish room types, discover or import hardware inventory, assign devices and manage bookable desks and bring-your-own-device spaces.
Official Microsoft objectives
Question formats you can practice
Multiple Choice
Select one answer.
Multiple Response
Select multiple applicable answers.
True / False
Decide whether statements are true or false.
Drag & Drop
Match items to the appropriate targets.
Ordering
Put steps in the correct order.
Dropdown
Choose the appropriate entry from a dropdown list.

These are Pass-IT practice formats. Check the Microsoft certification page for the official exam information.

The ranges describe the weighting of exam topics. See Official Microsoft objectives for the current exam objectives.

Frequently asked questions

Your preparation

How much study time should I plan for MS-721?

For planning, Pass-IT estimates roughly 30–75 hours. Relevant experience may put you toward the lower end; starting from scratch may put you toward the higher end. Your needs may fall outside this range. This is not a time requirement from Microsoft or a promise that you will be exam-ready within that time.

What do you need before MS-721?

No certification is required. The catalog budget is around 50 hours, and the exam assumes telephony concepts such as dial plans and routing rather than teaching them. Coming from a pure Microsoft 365 background, that voice material is usually the longest part of the preparation.

Using Pass-IT

What language are Pass-IT questions in?

Questions in the app are currently in English. Translations of the sample questions on this page apply only to this preview. Check with Microsoft for the languages available for the official exam.

How long does my MS-721 access last?

Access covers this certification for 12 months. You pay once, with no automatic renewal.

When does the money-back guarantee apply?

The guarantee refunds the Pass-IT purchase price for this certification. You need eligible paid access and a Readiness Score of at least 80% from your practice results when you take the exam. This score can only reach 80% after at least 50 answered questions and is not a validated probability of passing. Take the exam during your access period and submit official proof of failing within 14 days. Guarantee terms

About the MS-721 exam

Where can I take the MS-721 exam?

Pearson VUE online proctored or at authorized testing centers worldwide.

How long is the Collaboration Communications Systems Engineer exam?

The MS-721 exam has 50 questions and a 100-minute time limit.

MS-700 or MS-721 — which Teams exam?

MS-700 is the Teams administrator exam, weighted 42% towards configuring the tenant environment. MS-721 is the communications engineer exam, weighted a third towards Teams Phone and another quarter towards rooms and devices. If you provision users and policies, MS-700 fits; if you deploy handsets, dial plans and meeting rooms, MS-721 does.

How soon can you retake MS-721?

After 24 hours for a second attempt, then 14 days between any further ones. Five attempts on the same exam are allowed within a 12-month period.

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Money back if you fail with at least 80% Readiness, for eligible purchases under the guarantee terms.

Guarantee terms

The guarantee refunds the Pass-IT purchase price for this certification. You need eligible paid access and a Readiness Score of at least 80% from your practice results when you take the exam. This score can only reach 80% after at least 50 answered questions and is not a validated probability of passing. Take the exam during your access period and submit official proof of failing within 14 days.

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