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MS-721 practice questions

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Question 1Plan and design collaboration communications systems

Contoso has offices in several cities. You are designing Teams Phone. Emergency calls placed by users in the Dallas office must reach the correct public safety answering point with the Dallas street address, and Dallas users must not be able to place calls through the London gateway. Which object must you create and populate with the Dallas office subnets?

  1. A network site Correct answer.
  2. A calling policy
  3. A network region
  4. A roaming policy

Explanation

A network site represents a physical location, and the subnets and trusted IP addresses assigned to that site are how Teams determines where a user is. Dynamic emergency calling uses the site's associated emergency location, and location-based routing uses the site to restrict which gateways a caller can reach. Network regions group sites together for routing purposes but do not carry addresses or subnets themselves.

Question 2Plan and design collaboration communications systems

You are designing QoS markings for Teams real-time traffic. Which DSCP value should audio traffic use?

  1. 34
  2. 56
  3. 18
  4. 46 Correct answer.

Explanation

Teams marks audio with DSCP 46 (Expedited Forwarding), video with DSCP 34 (AF41), and screen sharing or application traffic with DSCP 18 (AF21). Network devices must be configured to trust and queue these values consistently along the path. DSCP 56 is reserved for network control traffic and is not used for Teams media.

Question 3Plan and design collaboration communications systems

You are designing an auto attendant that answers calls from the PSTN and routes them to users. Which license provides the phone system capability that the auto attendant's resource account requires?

  1. Microsoft 365 E3
  2. Microsoft Teams Shared Devices
  3. Microsoft Teams Phone Standard Correct answer.
  4. Microsoft Teams Rooms Pro

Explanation

Auto attendants and call queues run under resource accounts, and each resource account needs a Teams Phone license plus the free resource account license, along with a service number to receive PSTN calls. Microsoft 365 E3 includes Teams but not the phone system capability.

Question 4Plan and design collaboration communications systems

Before a Teams Phone rollout, you must estimate the network bandwidth that each office will need for meetings and voice. Which tool should you use?

  1. Network Planner Correct answer.
  2. Teams client debug logs
  3. Microsoft 365 network connectivity test
  4. Call Quality Dashboard

Explanation

Network Planner in the Teams admin center lets you define personas, sites, and networks, and then calculates the bandwidth and network requirements for each site before deployment. Call Quality Dashboard analyzes the quality of calls that have already happened rather than forecasting capacity.

Question 5Plan and design collaboration communications systems

Which PSTN connectivity option requires the organization to deploy and maintain a Microsoft-certified Session Border Controller?

  1. Microsoft Teams Calling Plans
  2. Teams Phone Mobile
  3. Direct Routing Correct answer.
  4. Operator Connect

Explanation

Direct Routing connects a customer-managed, certified SBC to the Teams phone system over SIP, giving the organization control over its carrier relationship. Calling Plans and Operator Connect are delivered without a customer-deployed SBC, and Teams Phone Mobile uses the mobile carrier's native SIM.

Question 6Plan and design collaboration communications systems

You must deploy Teams phones in shared lobbies and on factory floors where staff sign in with a shared account. Which license should you assign to each device?

  1. Microsoft Teams Shared Devices Correct answer.
  2. Microsoft Teams Rooms Pro
  3. Microsoft 365 E5 with a Calling Plan add-on
  4. Microsoft Teams Phone Standard

Explanation

The Microsoft Teams Shared Devices license is designed for common area phones and other shared devices; it provides a shared sign-in experience and the phone system capability for the device. Per-user licenses are assigned to individual people, and Teams Rooms Pro is scoped to meeting rooms.

Question 7Plan and design collaboration communications systems

Remote users connected to the corporate VPN report poor call quality during Teams meetings, while other business applications perform well. Corporate policy requires that general business traffic be inspected at the datacenter. Which design change should you recommend?

  1. Increase the VPN tunnel MTU and enable compression for all Teams traffic
  2. Force Teams media through the datacenter proxy so that existing inspection policies apply to all packets
  3. Configure split tunneling so Teams media bypasses the VPN and egresses directly Correct answer.
  4. Route Teams media through the VPN tunnel and prioritize it with QoS at the VPN headend

Explanation

Real-time media should take the shortest path to Microsoft 365, so Microsoft recommends split tunneling with Teams media excluded from the VPN tunnel. Hairpinning media through a VPN headend adds latency and jitter and can force media onto TCP. General business traffic can still be routed through the tunnel for inspection.

Question 8Plan and design collaboration communications systems

A branch office of 40 users uses Direct Routing with an SBC located on site. The business requires that branch users can still place and receive PSTN calls if the branch loses its connection to Microsoft 365. What should you deploy?

  1. A second SBC in the regional datacenter
  2. An ExpressRoute circuit with Microsoft peering
  3. A local reverse proxy server
  4. A Survivable Branch Appliance Correct answer.

Explanation

A Survivable Branch Appliance is a certified device that combines an SBC with a local registrar, so users homed to it keep PSTN calling when the WAN link or the Teams service is unavailable. When connectivity returns, the appliance synchronizes with the service.

Question 9Plan and design collaboration communications systems

Contoso wants PSTN calling in Teams but has no SBCs and no telephony operations team. Contoso wants its existing carrier to manage the PSTN connection and assign the phone numbers. Which option should you recommend?

  1. Microsoft Teams Calling Plans
  2. Direct Routing with a customer-deployed SBC
  3. Operator Connect Correct answer.
  4. Teams Phone Mobile

Explanation

With Operator Connect, a Microsoft-certified operator provides the PSTN service and manages number assignment from its own infrastructure connected to Teams, so the customer deploys no SBC. Calling Plans would make Microsoft the PSTN provider rather than allowing the existing carrier to retain that role.

Question 10Plan and design collaboration communications systems

In a Direct Routing design, you need media for PSTN calls to flow directly between the SBC and the Teams client at the same site, without traversing the Teams media processors. What should you enable?

  1. Media bypass Correct answer.
  2. Location-based routing
  3. Local media optimization
  4. Quality of Service marking

Explanation

Media bypass shortens the media path by sending media directly between the client and the SBC when both are at the same location, while signaling still goes through Teams. Local media optimization is a different feature that keeps media local for internal calls across sites by pairing users with a nearby SBC.

Question 11Plan and design collaboration communications systems

A sales team travels between the New York and London offices. Location-based routing is enabled with gateway and route configuration for both sites. A user whose usage location is New York places a PSTN call from a desk connected to the London network site. Which gateway handles the call?

  1. The New York gateway, because the user's usage location is New York
  2. The gateway listed first in the user's voice routing policy, regardless of the user's current site
  3. The call is blocked because the user is outside the assigned region
  4. The London gateway, because the user's current network site determines the route Correct answer.

Explanation

Location-based routing evaluates the network site where the endpoint is currently connected, not the user's assigned usage location, and restricts the call to the gateways enabled for that site. This is how toll bypass is prevented when users travel. The voice routing policy must still include a route that matches the dialed number for the London site.

Question 12Plan and design collaboration communications systems

A user at a newly opened branch places an emergency call. The branch subnet has not been added to any network site, and the user has no manually assigned emergency address. What is the expected behavior?

  1. The user is prompted to confirm or enter a location before the call is placed Correct answer.
  2. The call is routed to the public safety answering point for the headquarters address
  3. The call is blocked until an administrator adds the subnet to a network site
  4. The call is automatically routed to the fallback number defined in the emergency call routing policy

Explanation

Dynamic emergency calling derives the caller's location from the network site that contains the client's subnet. When the location cannot be determined and no address is assigned to the user, Teams prompts the user to provide and confirm a location so the call can be routed with the best available address.

Question 13Plan and design collaboration communications systems

Which type of phone number must be assigned to a resource account that a call queue uses to receive calls from external callers?

  1. An extension-only number
  2. A toll-free number, which is the only supported type
  3. A service number Correct answer.
  4. A subscriber (user) number

Explanation

Service numbers, whether toll or toll-free, are assigned to resource accounts that front voice applications such as auto attendants and call queues. Subscriber numbers are assigned to individual users so that they can place and receive calls.

Question 14Plan and design collaboration communications systems

You plan to move 800 existing phone numbers from a current carrier to Microsoft Teams Calling Plans. Which item must accompany the porting order?

  1. An SBC certificate issued by a public CA
  2. A SIP trunk configuration that points to the existing carrier's session border controller
  3. An emergency call routing policy
  4. A Letter of Authorization signed by an authorized contact Correct answer.

Explanation

Porting numbers into Teams requires a Letter of Authorization signed by someone authorized to act for the account, together with a recent invoice or bill for the numbers being ported. SBC and certificate details apply to Direct Routing and are not part of a Calling Plans porting order.

Question 15Plan and design collaboration communications systems

Users dial local numbers as eight digits and internal extensions as four digits. Calls must be handed to the Teams phone system in E.164 format. Where do you define the conversion rules?

  1. In a dial plan's normalization rules Correct answer.
  2. In a calling policy
  3. In a voice routing policy
  4. In the call flow of an auto attendant that handles external calls

Explanation

A dial plan contains normalization rules that rewrite dialed strings into E.164 before routing is evaluated. Voice routing policies then match the normalized number against PSTN usages and voice routes to select a gateway.

Question 16Plan and design collaboration communications systems

A voice routing policy lists PSTN usages in this order: Local, National, International. A dialed number matches a pattern in both the National route and the International route. Which route handles the call?

  1. A random route among the matching routes
  2. The route that contains the fewest number patterns and the shortest prefix
  3. All matching routes are tried at the same time and the first answer wins
  4. The route tied to the first PSTN usage in the list that has a matching route Correct answer.

Explanation

A voice routing policy evaluates its PSTN usages in list order, and the first usage whose associated voice route matches the dialed number is used. The order of PSTN usages in the policy is therefore how you express route preference and cost control.

Question 17Plan and design collaboration communications systems

Which change should you make to the corporate proxy design to optimize Teams real-time media?

  1. Force media through the proxy so that it can be prioritized
  2. Bypass the proxy for Teams media and allow direct egress Correct answer.
  3. Enable SSL inspection for all Teams traffic
  4. Disable UDP and send all Teams traffic over TCP 443

Explanation

Microsoft recommends that Teams media traffic not traverse a proxy, because proxying adds latency and can block the UDP transport that real-time media relies on. Signaling can still use the proxy, and media should egress directly to the Microsoft 365 network.

Question 18Plan and design collaboration communications systems

Which license is required for a Teams Rooms on Windows device to be managed through the Teams Rooms Pro Management portal and to receive the advanced meeting and management features?

  1. Microsoft Teams Rooms Pro Correct answer.
  2. Microsoft 365 E3
  3. Microsoft Teams Rooms Basic
  4. Microsoft Teams Shared Devices

Explanation

Microsoft Teams Rooms Pro licenses a room device for the Pro Management portal and the advanced meeting, management, and security capabilities. Teams Rooms Basic is limited in features and does not include the Pro Management portal experience.

Question 19Plan and design collaboration communications systems

You are designing QoS for Teams across a WAN with multiple network vendors. Which approach should you use?

  1. Mark audio as DSCP 34 and video as DSCP 46 on the client devices
  2. Use the Teams admin center to set DSCP values on all network devices
  3. Mark traffic at the source and ensure every network device trusts and queues the markings Correct answer.
  4. Apply QoS only at the internet edge, because all Teams media is encrypted and cannot be classified by network devices

Explanation

QoS requires markings applied as close to the source as possible and honored consistently by every device on the path, using a documented DSCP scheme. Because media is encrypted, classification relies on the markings the endpoints apply rather than deep packet inspection. The Teams admin center cannot configure network devices.

Question 20Plan and design collaboration communications systems

You are preparing an SBC for a Direct Routing deployment. Which certificate requirement must be met for the SIP connection to Teams?

  1. A certificate from a public CA that contains the SBC FQDN and the full chain Correct answer.
  2. An internal CA wildcard certificate for the tenant's onmicrosoft.com domain
  3. A self-signed certificate that uses the SBC's public IP address as the certificate subject
  4. A certificate issued by the organization's internal enterprise CA

Explanation

The SBC must present a certificate issued by a supported public certificate authority that includes the SBC's FQDN, with the complete certificate chain installed on the device. Teams will not accept certificates from an internal or self-signed authority for the SIP connection.

Question 21Plan and design collaboration communications systems

Contoso will broadcast an all-hands meeting to the whole company. Only the presenters will speak, and attendees will watch and take part in a moderated question-and-answer session. Which Teams capability should you recommend?

  1. A Teams town hall Correct answer.
  2. A channel meeting in the organization-wide team
  3. A series of 200-person meetings scheduled back to back
  4. A Teams webinar with registration enabled

Explanation

Town hall is built for large one-to-many broadcasts where presenters share content and attendees consume it, with moderated question-and-answer support. Webinars are designed for registration-driven, more interactive sessions where attendees are on camera and have full meeting capabilities.

Question 22Plan and design collaboration communications systems

Users in the Frankfurt office need local dial-in numbers, and their meeting invites must list a dial-in number for external participants. Which configuration should you plan?

  1. Assign Audio Conferencing licenses and add the Frankfurt number to the conference bridge Correct answer.
  2. Create a call queue that uses a Frankfurt service number
  3. Deploy a Direct Routing SBC in the Frankfurt office
  4. Assign a Calling Plan to each user and enable dial-out conferencing in the meeting policy for the office

Explanation

Dial-in conferencing requires the Audio Conferencing license, and the dial-in numbers are configured on the tenant's audio conferencing bridge so they are inserted into meeting invites. Calling Plans and Direct Routing provide PSTN calling for users and do not create the dial-in conference bridge.

Question 23Plan and design collaboration communications systems

Compliance requires that when any user in the Dallas office dials an emergency number, the security team receives a notification, but notifications must not be generated for other offices. What should you configure?

  1. An emergency calling policy that notifies only users at the same location, assigned to Dallas users Correct answer.
  2. A voice routing policy with a dedicated route for emergency calls from Dallas
  3. A tenant-wide emergency address assigned to the security team members
  4. A calling policy that has emergency calling notifications enabled for every user in the tenant and for the security team

Explanation

Emergency calling policies control enhanced emergency services and notification behavior, including whether notifications go to all users or only to users at the same location as the caller. The policy must be assigned to the users whose calls should trigger notifications so that other offices are excluded.

Question 24Plan and design collaboration communications systems

Contoso has offices in Germany, Brazil, and India. Calling Plans are not available in these countries, and Contoso wants to keep its existing local carriers. Which design meets the requirement?

  1. Teams Phone Mobile for all users in the three countries
  2. Microsoft Teams Calling Plans with the international calling add-on
  3. A single global Direct Routing SBC in the United States that is shared by all three offices
  4. Direct Routing with a local SBC in each country and site-scoped voice routes Correct answer.

Explanation

Direct Routing lets Contoso connect each local carrier through an SBC in that country, and voice routes scoped to each site keep calls on the appropriate gateway. Routing all calls to a distant SBC creates toll bypass and adds latency, and Calling Plans are not available in these markets.

Question 25Plan and design collaboration communications systems

A support desk wants each incoming call to go to the agent who has been idle the longest. Which routing method should you configure for the call queue?

  1. Longest idle Correct answer.
  2. Serial
  3. Round robin distribution
  4. Simultaneous

Explanation

Longest idle routes each call to the agent who has gone the longest without receiving a call, which balances workload across the queue. Round robin and serial offer calls in a fixed order and do not consider how long an agent has been idle.

Question 26Plan and design collaboration communications systems

You are planning a Teams deployment for a new office and need to estimate the network bandwidth required for meetings and PSTN calling. Which tool should you use?

  1. Call Quality Dashboard
  2. Microsoft 365 usage analytics
  3. Teams network planner Correct answer.
  4. Teams call analytics

Explanation

Teams network planner uses persona and usage assumptions to calculate the bandwidth needed for meetings, calling, and collaboration. It is designed for pre-deployment network planning. Call Quality Dashboard and call analytics examine completed calls rather than planning capacity.

Question 27Plan and design collaboration communications systems

An auto attendant must answer external PSTN calls. Which license must be assigned to its resource account?

  1. Microsoft 365 E5 with Teams Phone
  2. Microsoft Teams Rooms Pro
  3. Teams Phone Resource Account Correct answer.
  4. Microsoft Teams Essentials

Explanation

A resource account that handles PSTN calls for an auto attendant or call queue requires the Teams Phone Resource Account license. That license is purpose-built for voice resource accounts. User productivity licenses and room licenses are assigned to people or rooms, not to voice resource accounts.

Question 28Plan and design collaboration communications systems

What does a dial plan normalization rule do when a user dials a number in Teams?

  1. It selects the outbound SBC for the call
  2. It records the call for compliance review
  3. It converts dialed numbers to E.164 Correct answer.
  4. It assigns a calling policy to the user

Explanation

Normalization rules use regular expressions to rewrite the dialed string into E.164 format before call routing occurs. The normalized number can then be evaluated against voice routing policies. They do not select gateways, record calls, or assign user policies.

Question 29Plan and design collaboration communications systems

Which feature determines a Teams user's emergency address from the network subnet they are connected to?

  1. Call park with retrieval codes
  2. Direct Routing with media bypass
  3. Dynamic emergency calling Correct answer.
  4. Location-based routing policy

Explanation

Dynamic emergency calling uses network sites and subnets to determine the user's current location and emergency address. This allows emergency calls to be routed with the correct dispatchable location. Location-based routing restricts call routing by location but does not perform emergency address lookup.

Question 30Plan and design collaboration communications systems

Which device is designed for a single user's desk and runs the Teams app natively?

  1. Survivable Branch Appliance
  2. Session Border Controller
  3. SIP gateway
  4. Teams IP phone Correct answer.

Explanation

Teams IP phones are certified desk devices that run the Teams app and support a single user sign-in. They are managed as Teams devices. SIP gateways and SBCs provide connectivity or legacy phone support rather than being end-user desk phones.

Question 31Plan and design collaboration communications systems

Which Teams admin role can manage phone numbers and voice configuration without full tenant administration?

  1. Teams Communications Administrator Correct answer.
  2. Microsoft 365 Global Administrator
  3. Teams Device Administrator
  4. Teams Support Engineer

Explanation

Teams Communications Administrator can manage calling and meeting features, including phone numbers and voice policies. It does not grant full tenant-wide administration. Device Administrator is limited to Teams devices, and Support Engineer has read-focused troubleshooting access.

Question 32Plan and design collaboration communications systems

What is the primary purpose of a Teams calling policy?

  1. It sets the media codec used for calls
  2. It defines the public switched telephone network gateway
  3. It maps network subnets to emergency addresses
  4. It controls which calling features a user can use Correct answer.

Explanation

Calling policies enable or disable user calling features such as call forwarding, simultaneous ring, voicemail, and transfer. They do not define gateways or network locations. Media codecs are negotiated by the media stack rather than configured in a calling policy.

Question 33Plan and design collaboration communications systems

Which UDP ports must be open for Teams real-time media traffic?

  1. TCP 80 and TCP 443 for media
  2. TCP 5060 and TCP 5061 for media
  3. TCP 25 and TCP 587 for media
  4. UDP 3478 through 3481 Correct answer.

Explanation

Teams real-time media uses UDP ports 3478 through 3481. TCP 443 is used for signaling and other service traffic. SIP ports and mail ports are not the media ports for Teams.

Question 34Plan and design collaboration communications systems

An auto attendant must present a different menu outside business hours. Where should you configure this behavior?

  1. In the after-hours call flow Correct answer.
  2. In the Teams network topology settings
  3. In the tenant dial plan normalization rules
  4. In each user's assigned Teams calling policy

Explanation

Auto attendants have separate call flows for business hours and after hours. The after-hours call flow can route to a different menu, greeting, or destination. Calling policies and dial plans do not control auto attendant menus.

Question 35Plan and design collaboration communications systems

A call queue has four agents. When all agents are busy for more than 60 seconds, calls must go to a shared voicemail. What should you configure?

  1. A calling policy that disables call waiting and forwarding
  2. Overflow handling set to voicemail after 60 seconds Correct answer.
  3. A dial plan with a 60-second normalization rule
  4. A network site with a 60-second location rule

Explanation

Call queues provide overflow handling that redirects calls when wait time or agent capacity thresholds are met. The timeout and destination are configured in the queue's overflow settings. Dial plans and network sites do not control queue behavior.

Question 36Plan and design collaboration communications systems

You create a dial plan for the London office. How should you make it apply only to London users?

  1. Assign it to those users or group Correct answer.
  2. Set the dial plan as the tenant default
  3. Publish the dial plan in public DNS
  4. Add the London subnet to the dial plan

Explanation

Dial plans can be assigned to individual users or to groups so that only those users receive the custom normalization rules. The tenant or global dial plan applies by default to users without another assignment. Subnets are associated with network sites, not dial plans.

Question 37Plan and design collaboration communications systems

You want Teams to identify internal media traffic from a branch's public IP range as trusted. Where should you add the range?

  1. In network topology as a trusted IP Correct answer.
  2. In the dial plan as a normalization rule
  3. In the calling policy as an allowed number
  4. In the auto attendant as a holiday schedule

Explanation

Trusted IP addresses in Teams network topology tell Teams which traffic originates from internal networks. This affects media bypass and location-based routing decisions. Dial plans and calling policies do not define trusted network ranges.

Question 38Plan and design collaboration communications systems

Which mechanism lets Teams monitor whether an SBC in a Direct Routing deployment is reachable?

  1. Call queue overflow settings for the SBC
  2. Dial plan normalization rules applied to the SBC
  3. Teams meeting policies assigned to the SBC
  4. SIP OPTIONS messages sent to the SBC Correct answer.

Explanation

Direct Routing uses SIP OPTIONS messages to monitor SBC availability. If the SBC does not respond, Teams marks it unavailable and can fail over to another SBC. Dial plans and meeting policies do not provide this health monitoring.

Question 39Plan and design collaboration communications systems

A company needs advanced device management for its Teams Rooms. Which license provides this capability?

  1. Teams Shared Devices
  2. Teams Rooms Basic
  3. Teams Rooms Pro Correct answer.
  4. Teams Phone Standard

Explanation

Teams Rooms Pro includes advanced device management, analytics, and richer meeting features for Teams Rooms. Teams Rooms Basic provides core meeting functionality with limited management. Shared Devices and Phone Standard licenses are intended for other device or calling scenarios.

Question 40Plan and design collaboration communications systems

You are designing Teams access for shift workers who share tablets at a warehouse entrance. Which configuration is appropriate?

  1. A personal Microsoft 365 E5 account per tablet
  2. A Teams Rooms Pro license on each tablet
  3. A unique Teams Phone license for every worker
  4. Shared device mode with shared licensing Correct answer.

Explanation

Shared device mode lets multiple users sign in and out of a common Teams device without leaving their account data behind. It uses shared-device licensing rather than one personal license per shift worker. Teams Rooms licensing is intended for meeting rooms, not shared handheld tablets.

Question 41Plan and design collaboration communications systems

You need to prevent Teams Android phones from signing in outside the corporate network. Which control should you use?

  1. Conditional Access location condition Correct answer.
  2. A Teams meeting policy for phones
  3. A call queue overflow policy for phones
  4. A tenant dial plan normalization rule set

Explanation

Conditional Access can evaluate sign-in conditions such as network location and block access when conditions are not met. This applies to device sign-ins as well as user access. Dial plans, call queues, and meeting policies affect calling or meetings after sign-in rather than authentication.

Question 42Plan and design collaboration communications systems

During a Skype for Business to Teams upgrade, users must use Teams for meetings and channels while continuing to use Skype for Business for chat and calling. Which coexistence mode matches?

  1. Skype for Business only
  2. Teams Only
  3. Islands mode
  4. Meetings First Correct answer.

Explanation

Meetings First, formally Skype for Business with Teams collaboration and meetings, has users continue chat and calling in Skype for Business while using Teams for meetings and channels. Islands mode allows both clients for chat and calling. Teams Only moves all workloads to Teams.

Question 43Plan and design collaboration communications systems

A Teams Rooms device needs a calendar and a meeting invite address. Which Exchange object should be created?

  1. A shared mailbox
  2. A room mailbox Correct answer.
  3. A public folder
  4. A distribution group

Explanation

Teams Rooms resource accounts are linked to room mailboxes so the device can process meeting invites and display the room calendar. Shared mailboxes and groups do not provide room booking behavior.

Question 44Plan and design collaboration communications systems

A department wants any member to answer a call ringing on another member's phone by dialing a group code. Which feature should you configure?

  1. Call park with retrieval codes
  2. Response group with agents
  3. Auto attendant with a menu
  4. Group call pickup Correct answer.

Explanation

Group call pickup lets users answer calls ringing for other members of a defined group by dialing a pickup group code. Call park places calls on hold for later retrieval with a code. Auto attendants and response groups route incoming calls rather than picking up another user's ringing call.

Question 45Plan and design collaboration communications systems

You have legacy third-party SIP desk phones that cannot run Teams. Which service can register them to Teams Phone?

  1. Teams network planner
  2. Direct Routing SBC
  3. SIP Gateway for Teams Correct answer.
  4. Call Quality Dashboard

Explanation

SIP Gateway for Teams enables compatible legacy SIP phones to register with Teams Phone and make or receive calls. An SBC provides PSTN trunking for Direct Routing rather than registering desk phones as endpoints. Network Planner and Call Quality Dashboard are planning and analytics tools.

Question 46Plan and design collaboration communications systems

You are migrating users from Skype for Business Online to Teams Only and must retain their existing phone numbers. Which approach is correct?

  1. Convert all numbers to service numbers before migration
  2. Move users to Teams Only, then assign existing numbers Correct answer.
  3. Delete the Skype accounts and request new numbers
  4. Keep users in Islands mode permanently to keep numbers

Explanation

After users are moved to Teams Only, their existing user phone numbers can be assigned to them in Teams. Deleting accounts or converting numbers to service numbers would break the user number assignments. Islands mode does not complete the migration to Teams Only.

Question 47Plan and design collaboration communications systems

A Direct Routing design requires that PSTN calls continue if one SBC fails. What should you configure?

  1. Create a second dial plan with identical rules
  2. Register multiple SBCs in the voice route Correct answer.
  3. Assign each user two phone numbers
  4. Enable call park on the SBC

Explanation

Direct Routing supports multiple SBCs in a voice route, and Teams uses SIP OPTIONS health checks to fail over to an available SBC. Phone numbers and dial plans do not provide SBC media resiliency. Call park is unrelated to trunk failover.

Question 48Plan and design collaboration communications systems

A branch office must keep internal and PSTN calling working if the WAN link to Microsoft 365 fails. Which component should you deploy?

  1. A Survivable Branch Appliance Correct answer.
  2. A call queue with overflow handling
  3. A Teams Rooms Pro license for the branch
  4. A second auto attendant in the branch

Explanation

A Survivable Branch Appliance provides local call survivability for branch users when the connection to Microsoft 365 is unavailable. It registers with Teams when online and handles calls locally during an outage. Auto attendants and call queues depend on the service being reachable.

Question 49Plan and design collaboration communications systems

Which DNS record must exist for a Direct Routing SIP domain so Teams can route calls to the SBC?

  1. An MX record pointing to the SBC
  2. A CNAME record pointing to the auto attendant
  3. A SIP TLS SRV record pointing to the SBC Correct answer.
  4. A TXT record containing the dial plan

Explanation

Direct Routing uses a SIP TLS SRV record, or a single SBC FQDN, to locate the SBC for the SIP domain. MX records are for mail routing, and TXT and CNAME records do not provide SBC SIP routing.

Question 50Plan and design collaboration communications systems

You must reduce the risk of compromised accounts making unauthorized international calls. Which design should you implement?

  1. A network topology that trusts all public IPs
  2. A dial plan that normalizes all numbers to E.164
  3. A call queue that overflows to voicemail
  4. Calling policies that block international dialing Correct answer.

Explanation

Restrict international and premium destinations through calling policies and voice routing so only approved users can place those calls. This limits the damage a compromised account can cause. Normalization and call queue settings do not authorize call destinations.