Preparing for the Microsoft Collaboration Communications Systems Engineer exam in 2026 does not require a classroom. With RealVCE, your 376 practice questions for the MS-721 exam travel with you — the online engine works on phones, tablets, and computers alike, turning idle minutes into timed mock sessions.
Microsoft MS-721 Exam Overview:
| Certification Vendor: | Microsoft |
|---|---|
| Exam Name: | Collaboration Communications Systems Engineer |
| Exam Number: | MS-721 |
| Real Exam Qty: | 40-60 |
| Exam Price: | $140 USD |
| Exam Format: | Multiple choice, Interactive items, Case studies, Multiple select |
| Exam Duration: | 100 minutes |
| Certificate Validity Period: | 1 year |
| Passing Score: | 700 |
| Available Languages: | French, Japanese, English, Chinese (Simplified), Spanish, German, Portuguese (Brazil) |
| Recommended Training: | Microsoft Learn: MS-721 Learning Paths |
| Exam Registration: | Microsoft Certification Exam Registration |
| Sample Questions: |  |
| Exam Way: | Online proctored or onsite testing center |
| Pre Condition: | No mandatory prerequisites; recommended experience with Microsoft Teams, networking, telephony, and audio/visual technologies |
| Official Syllabus URL: | https://learn.microsoft.com/en-us/credentials/certifications/resources/study-guides/ms-721 |
Microsoft MS-721 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Configure and manage Teams Rooms and devices | 20-25% | - Monitor and maintain device health
|
| Topic 2: Plan and design collaboration communications systems | 20-25% | - Plan and design Teams meetings
|
| Topic 3: Configure and manage Teams Phone | 30-35% | - Manage emergency calling and compliance
|
| Topic 4: Configure and manage Teams meetings, webinars, and town halls | 15-20% | - Configure meeting policies and settings
|
MS-721 Exam Questions Answered: Format, Topics, and Prep
The MS-721 exam is the official assessment for the Microsoft Collaboration Communications Systems Engineer certification offered by Microsoft. It checks whether you can apply the knowledge areas in the exam objectives to practical situations, and passing it earns a credential that employers across the industry recognize. For professionals who feel stuck in their current role, it is often the most concrete next step available.
No mandatory prerequisites; recommended experience with Microsoft Teams, networking, telephony, and audio/visual technologies
The official outline for the MS-721 exam highlights these domains:
- Configure and manage Teams Phone (30-35%)
- Configure and manage Teams meetings, webinars, and town halls (15-20%)
- Configure and manage Teams Rooms and devices (20-25%)
Weighting your study time toward the heavier domains first is a sensible strategy, and the Microsoft Collaboration Communications Systems Engineer practice questions at RealVCE follow the same objective structure.
Microsoft recommends the following training resources for MS-721 exam candidates:
Pairing official courses with timed practice sessions tends to work well, since one builds knowledge and the other builds exam-day rhythm.
The MS-721 exam gives you 100 minutes minutes to answer 40-60 questions. That pace leaves little room for hesitation, which is why rehearsing under a timer — for example with the online test engine at RealVCE, where you can set the session length just like the real test — is such a useful habit.
The online test engine is exclusive to RealVCE and runs on any electronic device — phone, tablet, or computer — with no installation barriers. It recreates the atmosphere of the real MS-721 exam: you set the test time the way it will be on exam day, work through the Microsoft Collaboration Communications Systems Engineer practice questions under that pressure, and at the end the engine marks the questions you got wrong and reminds you to practice them again next time. Over a few sessions, that loop turns weak areas into reliable ones.
To pass the MS-721 exam you need a score of 700, and the registration fee is $140 USD. Since each attempt costs the full fee, arriving over-prepared is cheaper than arriving under-prepared — timed mock sessions and repeated review of missed questions are the usual ways candidates close that gap.
Registration for the MS-721 exam is handled through the official channels below:
Once your practice scores look consistent, booking a date gives your preparation a firm deadline to work toward.
Right after payment you get instant access to the MS-721 exam product — 376 practice questions for the Microsoft Collaboration Communications Systems Engineer exam with expert-verified answers — and the download link is also emailed to you automatically, typically within a minute. Your purchase includes 365 days of free updates; our team checks for exam changes daily, and when a new version is released the system sends it straight to your mailbox. A 50% renewal discount applies if you extend updates beyond the first year, and payment by Credit Card is handled through a secure checkout.
Microsoft Collaboration Communications Systems Engineer Sample Questions:
You have a Microsoft Teams Phone deployment.
You have Teams devices located in meeting rooms and public areas.
You need to turn on Device lock for the devices.
What should you configure?
- A. a calling policy
- B. a Teams policy
- C. a configuration profile
- D. a setup policy
Correct Answer: C 🗳️
Hotspot Question
You have a Microsoft Teams Phone deployment.
You plan to deploy a phone named Phone1 to a public location.
You need to ensure that Phone1 does NOT display the People, Calendar, and Voicemail options.
How should you complete the PowerShell command? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
Correct Answer:
You need to prevent a specific user from calling international phone numbers from within a Microsoft Teams meeting. What should you do?
- A. Assign a domestic-only calling plan to the user.
- B. Disable Enterprise Voice for the user
- C. Assign a dial-out policy to the user.
- D. Assign a tenant dial plan to the user.
- E. Remove Communications Credits from
Correct Answer: C 🗳️
Explanation: Only visible for RealVCE members. You can sign-up / login (it's free).
You have a Microsoft Teams deployment.
You need to prevent a group of executives from scheduling town halls. The solution must NOT affect any other internal users and must minimize administrative effort.
Which two actions should you perform? Each correct answer presents part of the solution.
NOTE: Each correct selection is worth one point.
- A. Assign a policy package to the group.
- B. Create a meeting policy that has Live streaming disabled.
- C. Create a meeting template policy.
- D. Create an events policy that has Town halls disabled.
- E. Assign the policy directly to the group.
- F. Assign the policy to each member of the group.
Correct Answer: D,E 🗳️
Explanation: Only visible for RealVCE members. You can sign-up / login (it's free).
Case Study 2 - Contoso
Overview
General Overview
The network contains an Active Directory forest named contoso.com that syncs to Microsoft 365 by using Azure AD Connect. Domain controllers run Windows Server 2019.
Physical Locations
Contoso has offices in Toronto, New York, and London. Contoso has a manufacturing facility in Vancouver.
Contoso has a global sales team that works remotely without a physical corporate office.
Existing Environment
Active Directory Environment
The network contains an Active Directory forest named contoso.com that syncs to Microsoft 365 by using Azure AD Connect. Domain controllers run Windows Server 2019.
Microsoft Office 365
Contoso has a Microsoft 365 subscription. All users are assigned Microsoft 365 E3 licenses.
Contoso uses Microsoft Exchange Online for email.
Network Infrastructure
All the offices connect to each other by using a private WAN. The Toronto office has a 1-Gbps internet circuit and the London office has a 100-Mbps internet circuit. Internet access for all the offices is provided through the Toronto and London offices.
The remote sales team users connect to the networks by using VPN connections. The remote users use various connection types, including wireless and mobile.
Skype for Business Server traffic for the remote users is routed through the VPN connections.
Telephony
Contoso uses a centralized Skype for Business Server 2015 deployment configured for disaster recovery between the Toronto and London datacenters.
Each frontend pool connects to the PSTN through a pair of managed Session Border Controllers (SBCs) that provide Enterprise Voice and dial-in conferencing.
Contoso has a Skype for Business Server Survivable Branch Appliance (SBA) and a local SBC that connects to a Primary Rate Interface (PRI) in the Vancouver manufacturing facility.
Contoso has hybrid connectivity deployed between Skype for Business Server and Office 365.
All SBCs are Microsoft Teams-certified.
The returns department has an auto attendant that uses an ID or [email protected].
Requirements
Planned Changes
Contoso plans to migrate all existing services from Skype for Business Server to Teams.
Direct Routing will be deployed for the existing SBCs.
Existing meeting rooms have Skype for Business Server video endpoints that are Skype for Business Server-certified. The endpoints are not Teams-certified.
You plan to use the video endpoints in Teams until the equipment is replaced with Microsoft Teams Rooms.
A limited pilot of the Teams migration and the Direct Routing deployment will occur in the Vancouver facility before deployment to the entire company.
Technical Requirements
Contoso identifies the following technical requirements:
* During the limited pilot, the media path must be optimized.
* Media flow for the remote sales team users must be optimized.
* All sales team users require inbound toll-free audio conferencing.
* Users in the Vancouver facility must be able to place emergency calls regardless of internet availability.
* When users in the returns department dial out, the outbound calls must display Contoso and the department's phone number.
* The video endpoints for the existing meeting rooms must be able to be used for both voice and video conferencing in Teams meetings.
Once Direct Routing is deployed, you need to prepare the environment to support a reams SBA in the Vancouver facility.
The solution must meet the technical requirements.
Which three actions should you perform? Each correct answer presents part of the solution.
NOTE: Each correct selection is worth one point.
- A. Configure the SBC for media bypass.
- B. Run the New-CsTeamsSurvivableBranchAppliancePolicy cmdlet
- C. Enable ForwardPAI on the online voice gateway.
- D. Enroll the SBA server in Microsoft Intune.
- E. Register an application in Azure Active Directory (Azure AD).
- F. Configure the SBC for call forking.
Correct Answer: A,B,E 🗳️
Explanation: Only visible for RealVCE members. You can sign-up / login (it's free).
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