Skip to main content

Last updated: May 2026

Practice Exam

MS-721Microsoft 365 Certified: Collaboration Communications Systems Engineer Associate

Test your knowledge with official exam-style questions

Questions25Passing700Exam time120 min

Questions and options are shuffled each attempt

Microsoft 365 Certified: Collaboration Communications Systems Engineer AssociatePractice Set 1: All Questions & Explanations

Full question text, answer options, and explanations for this practice set — a spoiler-free alternative is the interactive quiz above for scored, shuffled practice.

  1. 1. You are a collaboration communications systems engineer. Your organization is planning a Teams deployment and you need to assess network readiness before going live. Which tool should you use to measure packet loss, latency, and jitter between your network and Microsoft 365?

    • A. Microsoft Call Quality Dashboard (CQD)
    • B. Microsoft Teams Network Assessment Tool(correct)
    • C. Network planner for Teams
    • D. Microsoft 365 network connectivity test tool

    Explanation: The Microsoft Teams Network Assessment Tool measures network performance metrics such as packet loss, latency, and jitter from your network to Microsoft 365 network endpoints. It simulates Teams audio/video traffic to validate network readiness before deployment. The Network planner estimates bandwidth requirements. CQD analyzes call quality after deployment. The Microsoft 365 network connectivity test tool provides broader connectivity assessment.

  2. 2. Your organization wants to enable Teams Phone for users. You need to provide PSTN connectivity using your existing SIP trunks and Session Border Controllers (SBCs) that you have already invested in. Which PSTN connectivity method should you recommend?

    • A. Microsoft Calling Plan
    • B. Operator Connect
    • C. Direct Routing(correct)
    • D. Teams Phone Mobile

    Explanation: Direct Routing allows organizations to connect their own SIP trunks and Session Border Controllers to Microsoft Teams Phone, leveraging existing PSTN infrastructure and telecom contracts. Microsoft Calling Plan uses Microsoft-provided PSTN connectivity without your own SBCs. Operator Connect uses certified carrier integrations managed through the Teams admin center. Teams Phone Mobile is for mobile-first users using their cellular number as their Teams number.

  3. 3. Your organization needs to deploy Microsoft Teams in a large conference room that seats 20 people with a projector display and multiple cameras. The room requires a certified Teams Rooms solution with full meeting capabilities. Which licensing option should you use for this deployment?

    • A. Microsoft Teams Rooms Basic license
    • B. Microsoft Teams Rooms Pro license(correct)
    • C. Microsoft 365 E3 license applied to the room account
    • D. Microsoft Teams Essentials license

    Explanation: Microsoft Teams Rooms Pro license is required for large conference rooms requiring advanced features such as intelligent audio, video, and meeting room analytics. Teams Rooms Pro supports features like AI-powered speaker recognition, advanced room analytics in the Teams Rooms Pro Management portal, and conditional access policies for room accounts. Teams Rooms Basic provides limited free functionality for simple rooms. Microsoft 365 E3 is a user license, not a room license.

  4. 4. Your organization has branch offices in locations where internet connectivity can be intermittent. You need to ensure that Teams Phone users at these branch offices can still make and receive PSTN calls even when connectivity to Microsoft 365 is lost. You are using Direct Routing. Which solution should you recommend?

    • A. Operator Connect with a certified carrier
    • B. Survivable Branch Appliance (SBA)(correct)
    • C. Local Media Optimization (LMO)
    • D. Location-Based Routing (LBR)

    Explanation: A Survivable Branch Appliance (SBA) is a solution designed for Direct Routing environments where branch office connectivity to Microsoft 365 may be intermittent. The SBA is a certified appliance placed at the branch that can maintain basic PSTN calling functionality (make and receive calls) even when the internet connection to Teams cloud services is unavailable. Local Media Optimization optimizes media path for calls. Location-Based Routing controls toll bypass for PSTN calls based on location. Operator Connect does not support survivability appliances.

  5. 5. Your organization is designing a solution for a Microsoft Teams contact center. A customer calls the organization and the call must be routed based on business hours, IVR menu selection, and agent availability. Which two Teams Phone components are required to build this call routing solution? Choose 2.

    • A. Auto attendant(correct)
    • B. Call queue(correct)
    • C. Calling policy
    • D. Dial plan
    • E. Compliance recording policy

    Explanation: An auto attendant provides IVR menu options, plays greetings, handles business hours routing, and routes callers to the appropriate destination based on their input. A call queue holds callers when agents are unavailable, distributes calls to available agents using configurable routing methods, and provides Music on Hold. Together, auto attendants and call queues form the foundation of a Teams Phone call routing solution. Calling policies control calling features for users. Dial plans translate dialed numbers. Compliance recording captures calls but is not a routing component.

  6. 6. Your organization has users who travel frequently between multiple office locations. You need to ensure that when a Teams Phone user makes or receives a PSTN call, emergency services can identify the caller's current physical location dynamically rather than their registered address. Which feature should you implement?

    • A. Survivable Branch Appliance (SBA)
    • B. Dynamic emergency calling with Location Information Service (LIS)(correct)
    • C. Location-Based Routing (LBR)
    • D. Network roaming policy

    Explanation: Dynamic emergency calling uses Location Information Service (LIS) to automatically determine a user's current physical location based on network identifiers such as subnet, WAP BSSID, switch port, or chassis. When a user makes an emergency call, Teams passes the dynamically determined location to emergency services. This is critical for users who move between offices. LBR prevents toll bypass based on location but does not provide emergency location services. Network roaming policy applies settings based on network location but doesn't provide emergency location data.

  7. 7. You are a collaboration communications systems engineer. Your organization wants to enable Audio Conferencing so that meeting participants can join Teams meetings by dialing a phone number. You need to configure the default dial-in number for your organization in a specific country. Where should you configure this setting?

    • A. Microsoft Teams admin center > Meetings > Meeting policies
    • B. Microsoft Teams admin center > Meetings > Conference bridges(correct)
    • C. Microsoft 365 admin center > Settings > Org settings
    • D. Microsoft Teams admin center > Voice > Phone numbers

    Explanation: Audio Conferencing bridge settings, including the default dial-in conference bridge number, are configured in the Microsoft Teams admin center under Meetings > Conference bridges. Administrators can set the default bridge number, add or remove bridge numbers, and configure toll-free numbers. Meeting policies control features like recording and lobby settings but not conference bridge numbers.

  8. 8. Your organization is hosting a large public product launch event with up to 10,000 external attendees. Attendees should be able to watch and submit questions via Q&A but should not be able to see other attendees or unmute themselves. Presenters need the ability to manage the event and moderate Q&A. Which Teams meeting type is most appropriate?

    • A. Standard Teams meeting
    • B. Teams webinar
    • C. Teams town hall(correct)
    • D. Teams live event (classic)

    Explanation: Teams town halls are designed for large-scale broadcast events with up to 10,000 attendees (or more with premium). Town halls have a presenter/attendee model where attendees view a broadcast, cannot unmute or see each other, and interact via Q&A. This is distinct from webinars (which support more interactive two-way engagement) and standard meetings. Town halls replaced the classic Teams live events feature.

  9. 9. Your organization uses Microsoft Teams Premium. You need to configure meetings so that all content shared during meetings is watermarked with the attendee's email address to help track unauthorized sharing of meeting content. Which Teams Premium meeting feature should you configure?

    • A. Meeting sensitivity labels
    • B. Watermarking for shared content and video(correct)
    • C. End-to-end encryption for meetings
    • D. Custom meeting templates

    Explanation: Watermarking is a Microsoft Teams Premium feature that overlays attendee email addresses as watermarks on shared content (screen sharing) and video feeds during meetings. This deters unauthorized screenshot or recording sharing by making it traceable to a specific attendee. This feature is configured in meeting policies in the Microsoft Teams admin center. End-to-end encryption, sensitivity labels, and custom templates are other Teams Premium features but do not provide watermarking.

  10. 10. Your organization has multiple meeting room types for different use cases. You want to ensure that when a meeting organizer books a specific room type (such as a focus room or training room), the meeting settings are automatically pre-configured with appropriate defaults without requiring the organizer to manually set each option. Which feature should you use?

    • A. Meeting policy assigned to users
    • B. Teams meeting templates with template policies(correct)
    • C. Sensitivity labels applied to meetings
    • D. Audio Conferencing bridge defaults

    Explanation: Teams meeting templates allow administrators to pre-configure meeting settings (such as lobby, recording, and presenter permissions) for specific use cases and enforce them when organizers create meetings. Template policies control which templates are available to which users. Templates can lock certain settings so organizers cannot change them. This is the right tool for role-based or room-type-based meeting configuration. Meeting policies apply globally to users but don't provide the template-based customization and pre-population of settings.

  11. 11. You are configuring Teams Phone for your organization. You need to create a resource account and associate it with an auto attendant. What type of license must be assigned to the resource account used for a Teams Phone auto attendant?

    • A. Microsoft 365 E3 license
    • B. Microsoft Teams Phone Resource Account license (free)(correct)
    • C. Microsoft Teams Rooms Pro license
    • D. Microsoft Teams Essentials license

    Explanation: Resource accounts used for auto attendants and call queues in Teams Phone require a Microsoft Teams Phone Resource Account license, which is a free license. This license enables the resource account to be associated with an auto attendant or call queue and, if needed, to have a phone number assigned. It does not require a paid user license. The Teams Phone Standard or Calling Plan license is needed if the resource account requires a direct phone number for inbound PSTN calls.

  12. 12. Your organization has a call queue that receives high volumes of calls. You need to configure the queue so that when all agents are busy, callers hear Music on Hold rather than ringing. You also need to ensure that when a call has been waiting for more than 3 minutes, the caller is redirected to a voicemail. Which configuration action should you take?

    • A. Configure the call queue timeout action to redirect to voicemail and enable Music on Hold(correct)
    • B. Create a Conditional Access policy for the call queue resource account
    • C. Configure a caller ID policy on the call queue resource account
    • D. Enable the Queues app for all agents and configure overflow settings

    Explanation: In the call queue configuration in the Microsoft Teams admin center, you can enable Music on Hold to play audio while callers wait, and configure timeout handling to redirect callers to a specific destination (such as voicemail, another call queue, or an auto attendant) after a configurable wait time. Setting the timeout to 3 minutes (180 seconds) with a redirect-to-voicemail action achieves the described requirement. Caller ID policies and Conditional Access do not control call queue behavior.

  13. 13. Your organization is implementing Direct Routing for Teams Phone. You have deployed a certified Session Border Controller (SBC) and need to connect it to Microsoft Teams. You must create the PSTN gateway configuration in Teams and define which phone numbers can be used. In which order should you perform the Direct Routing configuration steps?

    • A. Create voice routes → Create PSTN usage records → Create voice routing policy → Assign policy to users → Configure SBC connectivity
    • B. Configure SBC connectivity → Create PSTN usage records → Create voice routes → Create voice routing policy → Assign policy to users(correct)
    • C. Assign policy to users → Create voice routing policy → Create voice routes → Create PSTN usage records → Configure SBC connectivity
    • D. Create PSTN usage records → Configure SBC connectivity → Create voice routing policy → Create voice routes → Assign policy to users

    Explanation: The correct Direct Routing configuration sequence is: (1) Configure SBC connectivity by creating a PSTN gateway (pairing the SBC FQDN in Teams admin center), (2) Create PSTN usage records which represent allowed call types, (3) Create voice routes that match number patterns to PSTN gateways and link to PSTN usage records, (4) Create voice routing policies that bundle PSTN usage records, and (5) Assign the voice routing policy to users. This sequence ensures each dependent component exists before it is referenced.

  14. 14. You are configuring emergency calling for Teams Phone users in your organization. You need to ensure that when a user dials 911, the correct emergency address for their current location is transmitted, and that security personnel at the building are also notified. Which two configurations are required? Choose 2.

    • A. Configure networks and locations in Location Information Service (LIS) with subnets, switch ports, or WAP BSSIDs(correct)
    • B. Configure an emergency calling policy with security desk notification settings(correct)
    • C. Create a caller ID policy restricting outbound caller ID for emergency calls
    • D. Create a dial plan with normalization rules for 911
    • E. Configure a Direct Routing voice route for emergency numbers only

    Explanation: Dynamic emergency calling requires configuring Location Information Service (LIS) with network identifiers (subnets, WAP BSSIDs, switch chassis/port) mapped to verified civic addresses so that a user's location is dynamically determined when they dial 911. Additionally, an emergency calling policy configures security desk notification — it specifies who gets notified (via Teams chat, phone call, or banner) when an emergency call is placed from within the organization. Caller ID policies, dial plans, and Direct Routing voice routes for emergency numbers are supporting configurations but not the two primary components for location-based emergency calling with security notification.

  15. 15. You are a collaboration communications systems engineer. You need to assign a phone number to a user in Teams Phone so they can make and receive PSTN calls. The user is in the United States and will use a Microsoft Calling Plan. After confirming the user has a Teams Phone Standard license and a Calling Plan license assigned, where should you assign the phone number?

    • A. Microsoft 365 admin center > Users > Active users > Licenses
    • B. Microsoft Teams admin center > Voice > Phone numbers
    • C. Microsoft Teams admin center > Users > select the user > Account tab(correct)
    • D. Exchange Online admin center > Recipients > Mailboxes

    Explanation: Phone numbers are assigned to individual users in the Microsoft Teams admin center by navigating to Users, selecting the specific user, and then configuring the phone number in the Account tab under Voice settings. The Voice > Phone numbers section is where you manage the phone number inventory, not where you assign numbers to users. The Microsoft 365 admin center manages licenses, not phone number assignments. Exchange Online does not manage Teams Phone numbers.

  16. 16. Your organization's Direct Routing SBC is sending calls to Teams, but users report that incoming calls show incorrect caller ID information — international numbers are not being normalized to E.164 format. You need to configure the SBC to translate incoming number formats before they are presented to Teams users. Which Direct Routing feature should you configure?

    • A. Voice routing policy
    • B. Dial plan normalization rules
    • C. Trunk translation rules(correct)
    • D. Caller ID policy

    Explanation: Trunk translation rules in Direct Routing are configured on the SBC PSTN gateway in Teams and allow number format manipulation for both inbound and outbound calls. They translate numbers at the trunk level before routing decisions are made, which is appropriate for normalizing incoming caller ID numbers to E.164 format. Dial plan normalization rules handle dialing transformations for users. Voice routing policies route calls to SBCs. Caller ID policies control the outbound number displayed to external callers.

  17. 17. Your organization needs to allow multiple users in a small team to share a single phone number so that any team member can answer incoming calls to that number and make outbound calls displaying that shared number. Which Teams Phone feature should you configure?

    • A. Call delegation
    • B. Group call pickup
    • C. Shared Calling(correct)
    • D. Auto attendant

    Explanation: Shared Calling in Teams Phone allows multiple users to share a single phone line — they can receive inbound calls to the shared number and make outbound calls that display the shared number. This is designed for frontline or shared workspace scenarios where individual direct numbers are not required for every user. Call delegation allows one user to make/receive calls on behalf of another. Group call pickup allows a group to answer each other's calls but each user has their own number. Auto attendants route calls but don't provide a shared line for outbound calls.

  18. 18. Your organization has offices in a country where regulations require that PSTN calls must be routed through local PSTN gateways and media must not traverse the internet to Microsoft data centers. You are using Direct Routing. Which feature should you implement to ensure that calls from regulated locations use only local SBCs for media and PSTN breakout?

    • A. Survivable Branch Appliance (SBA)
    • B. Location-Based Routing (LBR)(correct)
    • C. Local Media Optimization (LMO)
    • D. Network roaming policy

    Explanation: Location-Based Routing (LBR) in Teams Direct Routing is used to enforce routing regulations that require PSTN calls to break out through local gateways based on a user's network location. LBR prevents toll bypass by ensuring that calls from regulated sites use only the designated local PSTN gateway. Local Media Optimization (LMO) optimizes media path but does not enforce regulatory routing restrictions. SBA provides survivability. Network roaming policies manage Teams settings based on network location.

  19. 19. You are configuring a new auto attendant for your organization's main phone number. The auto attendant must play different greetings and routing options during business hours vs. outside business hours. Which two items must you configure in the auto attendant for this behavior? Choose 2.

    • A. Business hours schedule and call flow(correct)
    • B. After-hours call flow(correct)
    • C. A PSTN usage record linked to the auto attendant
    • D. A compliance recording policy on the resource account
    • E. An IP phone policy assigned to the resource account

    Explanation: Auto attendants in Teams Phone support separate call flows for business hours and after-hours. You must configure the business hours schedule (specifying which hours are considered business hours for each day) along with the business hours call flow (greetings and routing options during business hours). You also configure the after-hours call flow separately (greetings and routing options outside business hours). PSTN usage records, compliance recording, and IP phone policies are not components of auto attendant call flow configuration.

  20. 20. Your organization has deployed Microsoft Teams Rooms on Windows devices in conference rooms. You need to centrally manage these devices, monitor their health, view room utilization analytics, and remotely restart them. Which management portal provides these capabilities for Teams Rooms Pro licensed devices?

    • A. Microsoft Intune admin center
    • B. Microsoft Teams admin center > Devices
    • C. Microsoft Teams Rooms Pro Management portal(correct)
    • D. Azure Monitor

    Explanation: The Microsoft Teams Rooms Pro Management portal (rooms.microsoft.com) provides advanced management capabilities specifically for Teams Rooms Pro licensed devices, including health monitoring with incident alerts, room utilization analytics, remote actions (restart, update), and detailed device diagnostics. The Teams admin center Devices section provides basic device management. Microsoft Intune manages device compliance and configuration profiles. Azure Monitor is a general-purpose monitoring platform.

  21. 21. You are deploying Teams IP phones as common area phones in a shared workspace. The phones will be used by multiple employees with no dedicated user accounts. You need to configure these phones as shared devices. Which account type should you use for a common area phone?

    • A. A regular Microsoft 365 user account with Microsoft Teams Phone Standard license
    • B. A resource account with Microsoft Teams Rooms Pro license
    • C. A shared mailbox account with a Microsoft Teams license
    • D. A Microsoft Entra ID account with Microsoft Teams Shared Devices license(correct)

    Explanation: Common area phones are configured using a Microsoft Entra ID account assigned a Microsoft Teams Shared Devices license (formerly Common Area Phone license). This license is designed for shared-use devices that are not associated with a specific user. A Microsoft Teams Phone Standard or add-on license may also be required for PSTN calling. Regular user accounts should not be used for shared devices due to security and compliance concerns. Resource accounts are for auto attendants and call queues, not common area phones.

  22. 22. Your organization has deployed Teams Rooms on Android devices. You need to customize the background display on Teams panels (room booking panels outside conference rooms) to show your organization's branding. Which feature allows you to configure custom displays on Teams panels and Teams Rooms on Android?

    • A. Teams meeting templates
    • B. Custom background images configured in device configuration profiles via Microsoft Intune
    • C. Custom displays for Teams Rooms on Android and Teams panels in the Teams admin center(correct)
    • D. XML configuration file deployed via Teams Rooms on Windows

    Explanation: Custom displays for Teams Rooms on Android devices and Teams panels can be configured through the Microsoft Teams admin center under Devices settings. This allows administrators to set custom background images and branding for room panels and Android-based rooms. XML configuration files are used for Teams Rooms on Windows, not Android. Intune configuration profiles manage device compliance and settings but are not the primary method for custom display branding on Teams Android devices.

  23. 23. Your organization has conference rooms with existing third-party video conferencing equipment (non-Teams certified). You need to enable these devices to join Microsoft Teams meetings without replacing the hardware. You want a cloud-based solution that does not require on-premises infrastructure. Which interoperability solution should you recommend?

    • A. Direct Guest Join via SIP
    • B. Cloud Video Interop (CVI)(correct)
    • C. Survivable Branch Appliance (SBA)
    • D. SIP Gateway

    Explanation: Cloud Video Interop (CVI) is a Microsoft-certified cloud-based interoperability solution that allows third-party video conferencing devices (such as Cisco, Polycom, or other SIP/H.323 devices) to join Microsoft Teams meetings. CVI is provided by certified CVI partners and requires no on-premises infrastructure — it works via a cloud gateway. Direct Guest Join allows some third-party room devices to join Teams meetings natively but requires device support. SIP Gateway connects SIP devices specifically for Teams Phone calling, not meeting video interop. SBA is for PSTN survivability.

  24. 24. You are deploying Teams Rooms on Windows in your organization. You need to customize the Teams Rooms application settings, including configuring the device to automatically accept incoming meeting invitations and enabling dual-monitor display mode. Which two methods can be used to configure Teams Rooms on Windows settings? Choose 2.

    • A. XML configuration file (SkypeSettings.xml) placed in the C:\Users\Skype\AppData\Local\Packages folder(correct)
    • B. Microsoft Teams admin center remote device configuration(correct)
    • C. Microsoft Intune device configuration profile with custom OMA-URI settings
    • D. Direct edit of the Windows registry on each device
    • E. Teams meeting policy assigned to the room account

    Explanation: Teams Rooms on Windows settings can be configured using: (1) an XML configuration file (SkypeSettings.xml) placed in the local app data folder of the Skype account on the device — this file supports settings like auto-accept, dual display, and more; and (2) the Microsoft Teams admin center, which provides remote configuration options for supported settings. Microsoft Intune is used for device compliance and OS-level settings but is not the primary method for Teams Rooms application-level settings. Direct registry edits are not a supported management approach. Meeting policies apply to user experiences, not room-level application configuration.

  25. 25. Your organization is implementing a hot desking solution where employees can walk up to any Teams-enabled desk phone, sign in with their Microsoft 365 credentials, and have their personal Teams experience. When they leave, the device should revert to a neutral state. Which Teams Phone feature enables this experience?

    • A. Shared Calling configuration
    • B. Common area phone with static credentials
    • C. Hot desking on Teams shared devices(correct)
    • D. Group call pickup policy

    Explanation: Hot desking on Teams shared devices allows users to temporarily sign in to a shared Teams desk phone with their personal Microsoft 365 account, giving them access to their Teams identity, contacts, call history, and voicemail during the session. When they sign out, the device reverts to the shared device state. This feature requires a Teams Shared Devices license on the device account and hot desking to be enabled in the Teams admin center. Shared Calling provides a shared phone number but not the hot desk personal sign-in experience. Common area phones with static credentials do not support personal user sessions.