Microsoft MS-721 dumps

Microsoft MS-721 Exam Dumps

Collaboration Communications Systems Engineer
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Exam Code MS-721
Exam Name Collaboration Communications Systems Engineer
Questions 274 Questions Answers With Explanation
Update Date August 03, 2026
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What Is the MS-721 Certification Exam?

The MS-721 certification exam is a standardized assessment designed to measure a candidate's knowledge, competencies, and practical understanding within a defined professional field. It serves as the primary requirement for earning the Microsoft 365 Certified: Collaboration Communications Systems Engineer Associate, a credential that represents a recognized level of proficiency in its respective industry. Depending on the field, this may involve theoretical knowledge, applied problem-solving, regulatory understanding, or hands-on procedural competence.

The exam is typically developed and maintained by an accrediting body or professional organization that sets the standards for the Microsoft 365 Certified: Collaboration Communications Systems Engineer Associate. This ensures that anyone who earns the credential has met a consistent benchmark, regardless of where they studied or gained their experience. For many professionals, the MS-721 Certification Exam represents a formal checkpoint in their career, one that confirms readiness to take on greater responsibility within their chosen field.

Why the Microsoft 365 Certified: Collaboration Communications Systems Engineer Associate Certification Matters?

Certifications like the Microsoft 365 Certified: Collaboration Communications Systems Engineer Associate exist because industries need a reliable way to verify competence beyond a resume or a job title. Earning this credential signals to employers, clients, and colleagues that a professional has invested time in building a structured foundation of knowledge and has been evaluated against an established standard.

Beyond individual recognition, the Microsoft 365 Certified: Collaboration Communications Systems Engineer Associate certification often supports broader professional development. It can influence hiring decisions, contribute to internal advancement, or serve as a prerequisite for more specialized roles within the field. In many industries, certifications also help standardize expectations across organizations, making it easier for professionals to move between employers or sectors while carrying a credential that is widely understood and respected.

Who Should Take the MS-721 Exam?

The MS-721 exam is generally relevant to individuals who are either entering a field or looking to formalize skills they have already developed through experience. This can include early-career professionals seeking a credential to support their first steps into the industry, as well as experienced practitioners who want official recognition of knowledge gained on the job.

Students preparing to enter the workforce may also pursue the MS-721 exam as a way to strengthen their qualifications before graduating or applying for their first roles. In some fields, employers actively encourage or require staff to pursue this certification as part of ongoing professional development, particularly in industries where standards, safety, or compliance play a significant role in daily responsibilities.

Knowledge and Skills Evaluated in the Collaboration Communications Systems Engineer

The Collaboration Communications Systems Engineer is built to evaluate both foundational knowledge and the practical judgment needed to apply that knowledge in real situations. Candidates are generally expected to understand core principles and terminology relevant to their field, along with the reasoning behind established procedures, standards, or best practices.

Depending on the industry, this may include understanding regulatory requirements, following established protocols, applying analytical or technical methods, or exercising sound judgment in situations that require careful decision-making. Rather than testing isolated facts in a vacuum, the Collaboration Communications Systems Engineer tends to reward candidates who can connect concepts to realistic scenarios, reflecting the kind of thinking expected in day-to-day professional practice.

MS-721 Exam Preparation Resources

Preparing for the MS-721 certification exam becomes more effective when using high-quality and up-to-date study materials. MyCertsHub provides resources designed to help candidates build knowledge, practice consistently, and become familiar with the actual exam format.

Preparation Features:

  •   274 carefully prepared practice questions
  •   Updated on August 03, 2026
  •   MS-721 Practice Questions & Answers
  •   Comprehensive Study Guide covering the latest exam objectives
  •   Interactive Practice Test Engine for realistic exam simulation
  •   Printable PDF study material for convenient offline preparation
  •   Free Updates For 3 Months
  •   Money-Back Guarantee according to our Refund Policy

How to Prepare for the MS-721 Certification Exam?

Effective preparation for the MS-721 certification exam usually begins with a clear understanding of the exam's objectives and structure. Reviewing official guidelines or documentation published by the certifying body provides the most accurate picture of what will be covered and how heavily different areas are weighted.

From there, many candidates benefit from building a structured study plan that breaks preparation into manageable sections over a set period of time. A well-organized MS-721 Study Guide can help sequence this material logically, especially for those approaching a topic for the first time. Consistent review, paired with realistic practice, tends to produce better retention than concentrated last-minute studying.

Practical experience, where applicable to the field, also plays an important role in preparation. Working through MS-721 Practice Questions and a MS-721 practice test can help candidates identify gaps in their understanding and become familiar with the format and pacing of the actual exam. In fields where hands-on skill is assessed, supplementing study with real-world practice or supervised experience often makes the difference between recognizing correct information and genuinely understanding it.

Benefits of Earning the Microsoft 365 Certified: Collaboration Communications Systems Engineer Associate Certification

Successfully earning the Microsoft 365 Certified: Collaboration Communications Systems Engineer Associate certification offers benefits that extend well beyond passing a single exam. It provides documented proof of competence that can be referenced on a resume, professional profile, or internal performance review, offering a clear, third-party validation of skill and knowledge.

The credential can also strengthen professional credibility when working with clients, patients, stakeholders, or colleagues who may not be positioned to evaluate technical or specialized knowledge directly. Over time, this recognition often contributes to expanded career opportunities, whether through new responsibilities, higher-level roles, or eligibility for additional certifications that build on this foundational credential.

Prepare for the MS-721 Exam with MyCertsHub

Preparing for the MS-721 exam is a process that benefits from organized, consistent effort rather than rushed, last-minute review. MyCertsHub is designed to support that process by offering study resources, practice materials, and educational content that help candidates understand what the Collaboration Communications Systems Engineer covers and how to approach their preparation thoughtfully.

Whether someone is just beginning to explore the Microsoft 365 Certified: Collaboration Communications Systems Engineer Associate or is in the final stages of reviewing material before their exam date, MyCertsHub aims to serve as a dependable resource throughout that journey. Every candidate's path to certification looks a little different, and the goal remains the same: to provide clear, genuinely useful information that supports real understanding of the subject matter.

Microsoft MS-721 Sample Question Answers

Question # 1

Your company uses Microsoft Skype for Business Server 2015 and Enterprise Voice as thePSTN solution.You plan to migrate all users to Microsoft Teams Calling Plans.You will decommission Skype for Business Server after the migration is complete.You need to ensure that all the users retain their current phone number once the migrationis complete. The solution must minimize the downtime of PSTN features for each user.What should you do first?

A. From the Microsoft 365 admin center, purchase Communications Credits for all theusers.
B. Schedule a port order for the phone numbers of all the users.
C. From the Microsoft Teams admin center, order phone numbers for all the users.
D. Migrate all the users to Teams.



Question # 2

You have a Microsoft Teams deployment.You notice that users erroneously create a live event when attempting to create a meetingfrom the Teams client calendar.You need to disable live events for all users.What should you modify from the Microsoft Teams admin center?

A. Live events settings
B. live events policies
C. meeting policies
D. customization policies



Question # 3

Note: This question is part of a series of questions that present the same scenario. Eachquestion in the series contains a unique solution that might meet the stated goals. Somequestion sets might have more than one correct solution, while others might not have acorrect solution.After you answer a question in this section, you will NOT be able to return to it. As a result,these questions will not appear in the review screen.Your company uses configuration profiles to manage Microsoft Teams-certified IP phones.The Standard configuration profile is applied to the IP phones.The help desk receives reports that several user phones fail to lock automatically after thetimeout period.You need to verify whether the configuration profile is applied to the problematic phones.Solution: From Teams Devices in the Microsoft Teams admin center, you select Phonesselect the Configuration profiles tab, select the Standard Phone Policy, and selectAssigned devices.Does this meet the goal?

A. Yes
B. No



Question # 4

You are enabling users for Direct Routing.You already assigned licenses to the users.You need to complete the user setup.Which two cmdlets should you run? Each correct answer presents part of the solution.NOTE: Each correct selection is worth one point.

A. Set-CsOnlineVoiceUser
B. Grant-CsOnlineVoiceRoutinePolicy
C. Set-CsUser
D. Grant-CsVoicePolicy
E. Set-CsUSerPstnSettings



Question # 5

You have a Microsoft Teams Phone deployment.You have a PBX that connects to the PSTN by using an E1/T1 Primary Rate interface(PRI).You plan to migrate to Direct Routing by using the existing PSTN services.What should you install upstream of the PBX?

A. a physical Session Border Controller (SBC)
B. an FXO SIP Analog Telephony Adapter (ATA)
C. a virtual Session Border Controller (SBC)
D. a Session Border Controller (SBC) in Azure



Question # 6

Note: This question is part of a series of questions that present the same scenario. Eachquestion in the series contains a unique solution that might meet the stated goals. Somequestion sets might have more than one correct solution, while others might not have acorrect solution.After you answer a question in this section, you will NOT be able to return to it. As a result,these questions will not appear in the review screen.Your company uses Microsoft Teams Calling Plans.The company acquires a small development team. Currently, users on the team have theirown direct inward dial (DID) numbers that have PSTN capabilities.You migrate the users to Teams.You need to ensure that the users have phone numbers.Solution: From the Microsoft Teams admin center, you create a new port order.Does this meet the goal?

A. Yes
B. No



Question # 7

Note: This question is part of a series of questions that present the same scenario. Eachquestion in the series contains a unique solution that might meet the stated goals. Somequestion sets might have more than one correct solution, while others might not have acorrect solution.After you answer a question in this section, you will NOT be able to return to it. As a result,these questions will not appear in the review screen.Your company uses Microsoft Teams Calling Plans.The company acquires a small development team. Currently, users on the team have their own direct inward dial (DID) numbers that have PSTN capabilities.You migrate the users to Teams.You need to ensure that the users have phone numbers.Solution: You run the New-CsHybridTelephoneNumber cmdlet.Does this meet the goal?

A. Yes
B. No



Question # 8

You have a Microsoft Teams Phone deploymentYou use Direct Routing with a Survivable Branch Appliance (SBA) at a site.The site experiences an extended internet outage.Which three PSTN calling scenarios are possible during the outage? Each coned answerpresents a complete solution.NOTE: Each correct selection is worth one point.

A. dynamic emergency calling
B. outbound PSTN calls
C. inbound PSTN calls
D. call transfer of PSTN calls
E. hold and resume of PSTN calls



Question # 9

Your company assigns an Office 365 E3 license to each user. All users are m France.You plan to deploy Direct Routing.Which additional license should you assign to the users?

A. Microsoft 365 Audio Conferencing
B. Microsoft 365 Phone System - Virtual
C. Microsoft 365 Phone System
D. Microsoft 365 Domestic and International Calling Plan
E. Microsoft 365 Domestic Calling



Question # 10

You create a network region Region1 in Microsoft Teams.You are adding a network site to Region1. The site has a 1.5-Mb connection.You need to ensure that all users at the site have a good voice experience.What should you do?

A. Create and assign a Teams Network Roaming Policy that has IP video disabled.
B. Assign the Region1 users a meeting policy that has a media bit rate of 1,500 Kbps.
C. Run the Microsoft 365 network connectivity test tool.
D. Tag all traffic with a DSCP value of 46.



Question # 11

Your company assigns an Office 365 E3 license to each user. All users are in France.You plan to deploy Direct Routing.Which additional license should you assign to the users?

A. Microsoft 36S Domestic and International Calling Plan
B. Microsoft Teams Phone Standard - Virtual User
C. Microsoft 36S Domestic Calling Plan
D. Microsoft 365 Audio Conferencing
E. Microsoft Teams Phone Standard



Question # 12

You are optimizing a network to better support voice and collaboration workloads inMicrosoft Teams.When the users are at a specific corporate site, you need to prevent the users from addingvideo during calls.Solution: You run New-CsTeamsMeetingPolicy and set the -iPVideoHode parameter todisabled.Does this meet the goal?

A. Yes
B. No



Question # 13

You have a Teams Phone deployment. The deployment has a single Session 3crderController (SBC) that uses Direct Routing.Users report that outbound PSTN calls fail.You need to identify the quantity of specific SBC SIP errors.What should you review m the Microsoft Teams admin center?

A. Endpoint Reports in Microsoft Call Quality Dashboard
B. the network effectiveness ratio on the usage tab for the SBC
C. the Jitter tab in Network parameters
D. Quality of Experience Reports in Microsoft Call Quality Dashboard



Question # 14

You have a Microsoft Teams Phone deployment.You have a call queue named Customer Service.You need to ensure that when the agents of Customer Service make calls, the outboundcalling name appears as Contoso, and the caller ID shows the phone number of CustomerService. Other users must NOT be affected.Which three actions should you perform? Each correct answer presents a part of thesolution.NOTE: Each correct selection is worth one point.

A. From the Microsoft Teams admin center configure a new caller ID policy
B. Set Calling Party Name to the organization name.
C. From the Microsoft Teams admin center, modify the global (Org-wide default! caller IDpolicy.
D. Set Replace the caller ID with to Resource account
E. Set Override the caller ID policy to On.



Question # 15

You have a PBX phone system that contains 100 handsets. The handsets support SIPregistration. You implement a new Microsoft Teams Phone deployment that has SIPGateway configured. You need to register the handsets with Teams.What should you do?

A. From the Microsoft Teams admin center, create a configuration profile for each device.Configure the handsets to use LLDP.
B. From the voice calling policy, set SIP devices can be used for calls to On. Configure thehandsets to use LLDP.
C. From the Microsoft Teams admin center, create a configuration profile for each device. Add the Teams SIP device details to the handsets.
D. From the voice calling policy, set SIP devices can be used for calls to On. Configure theprovisioning URL on the handsets.



Question # 16

You have a Teams Phone deployment.You have a Survivable Branch Appliance (SBA) that has local PSTN connectivity. The SBAis deployed to a remote site. Which two features require internet connectivity to function?Each correct answer presents a complete solution. NOTE: Each correct selection is worthone point.

A. emergency calling
B. Teams-certified phones
C. media bypass
D. call queues
E. call forwarding



Question # 17

Your company has an office in Adelaide.The company has a Microsoft Teams Phone deployment.You acquire a new service number that has the local Adelaide area code.You need to update the default conferencing toll number for only the users in the Adelaideoffice.Which two actions should you perform? Each correct answer presents part of the solution. NOTE: Each correct selection is worth one point.

A. Configure a customization policy.
B. Assign the policy to the Adelaide office users.
C. Assign the number to a resource account.
D. Configure an audio conferencing policy.
E. Modify the Assigned phone number setting for each Adelaide office user.
F. Modify the global (Org-wide default} audio conferencing policy.



Question # 18

You have a Microsoft Teams deployment.You need to ensure that users can schedule meetings that have the following:Presenter biosAttendee registrationRegistration managementWhich two types of policies should you configure? Each correct answer presents cart of thesolution.NOTE: Each correct selection is worth one point.

A. agg permission policy
B. meeting policy
C. live events policy
D. meeting template policy
E. teams events policy
F. customization policy



Question # 19

You port phone numbers from a legacy earner to Microsoft Teams Phone to use withMicrosoft Teams Calling Plans.You attempt to assign a number to a resource account that will be used by an autoattendant, but the number does NOT appear on the list of available numbers.You need to ensure that you can assign the number to the resource account.What should you do?

A. Submit a request to convert the number from a user number to a service number.
B. Run the Set-CsOnlineApplicationlnstance cmdlet.
C. Run the Set-CsTeamsUnassignedNumber Treatment cmdlet.
D. Order a new number from Microsoft.



Question # 20

You have a Microsoft Lync Server 2013 deployment.Some users use Enterprise Voice.You plan to migrate to Microsoft Teams.You need to design a migration solution. The solution must minimize the impact on endusers during the migration.What should you include in the solution?

A. Migrate all users directly from Lync Server 2013 to Teams.
B. Migrate the Enterprise Voice users from Lync Server 2013 to Microsoft Skype forBusiness Server 2019. and then migrate the Enterprise Voice users to Teams.
C. Migrate all other users directly from Lync Server 2013 to Teams.
D. Perform an in-place upgrade from Lync Server 2013 to Microsoft Skype for BusinessServer 2015, and then migrate all users to Teams.



Question # 21

You are planning a Microsoft Teams Phone deployment. That will use Direct Routing. Youneed to allow traffic from Microsoft 365 to a Session Border Controller (SBC). Which IPaddress ranges should you allow through the firewall?

A. 52.112.0.0/14 and 52.120.0.0/14
B. 10.10.0.0/24 and 10.11.0.0/24
C. 8.8.8.8/32 and 4422/32
D. 132.245.0.0/16and40.104.0.0/15



Question # 22

You have a Microsoft Teams Phone deployment.You need to provide two users with the ability to share a single phone number for inboundand outbound calling.What are two ways to achieve the goal? Each correct answer presents a complete solution.NOTE: Each correct selection is worth one point.

A. call queues
B. call forwarding
C. group call pickup
D. call delegation
E. call park



Question # 23

You have a global Teams Phone deployment that has local service numbers from multipleofficesYou need to ensure that when the users at an office in Sydney create a Teams meetinginvite, the invite displays a local conferencing number by defaultWhat should you do?

A. Create a new Audio Conferencing policy and assign a local service number from theSydney office.
B. Assign a local service number from the Sydney office to a resource account
C. Create a new caller ID policy and assign a local service number from the Sydney office.
D. Modify the global (org-wide default) Audio Conferencing policy and assign a localservice number from the Sydney office.



Question # 24

Your company has a Microsoft Teams Phone deployment.You plan to deploy auto attendants and call queues.The support desk requires that its auto attendant be able to forward calls after hours tolocal mobile phone numbers.You need to identify which licenses to assign to auto-attendant. The solution must minimizecosts. Which two licenses should you identify? Each correct answer presents part of the solution.NOTE: Each correct selection is worth one point.

A. Microsoft 365 Phone System
B. Microsoft 365 Domestic Calling Plan
C. Microsoft 365 Phone System - Virtual User
D. Office 365 E3
E. Microsoft 365 E5
F. Microsoft 365 Domestic and International Calling Plan



Question # 25

You have a Teams Phone deployment.You need to enable external users to configure their emergency address manually in theTeams client.What should you do?

A. Enable Location-Based Routing.
B. Create a new emergency calling policy that has external location lookup mode enabled.
C. Create a new emergency call routing policy that has dynamic emergency callingconfigured.
D. From Networks & locations, add the external subnets of the users.



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