These ms 721 sample questions cover Teams Phone, Teams Rooms, and Teams meetings scenarios, each written the way Microsoft phrases exam questions: a short scenario followed by four options. Every question below shows the correct answer directly after the options, along with an explanation of why the other choices are close but wrong, so you can check your reasoning, not just your final pick.
These ms 721 sample questions match the scenario-based style of Exam MS-721: a situation, a constraint, and four options where more than one looks plausible. Each is labeled with its domain; the answer follows the options with why the other choices do not fit.
Question 1
Implement and configure Teams Phone
Your company uses Teams Phone with Direct Routing and Location-Based Routing. The Berlin and Frankfurt offices each have a local SBC and a separate network site. Both offices use the same 10.10.0.0/16 private address range. You need to configure simultaneous ring call groups so that a PSTN call to a Berlin user rings only Berlin colleagues and exits through the Berlin SBC. You must keep Location-Based Routing enforced. What should you do first?
- A. Give each office a unique IP subnet and update the Teams network site and subnet definitions to match.
- B. Add both offices to a single network site and use one local SBC for all simultaneous ring calls.
- C. Disable Location-Based Routing for the users in both offices to let the simultaneous ring route normally.
- D. Create an office-specific call group for each office and assign it as the simultaneous ring target for that office's users.
Answer: A
Location-Based Routing decides a user's site by matching the client's IP subnet to the Teams network topology. With the same 10.10.0.0/16 range in both offices, the service cannot tell a Berlin client from a Frankfurt client, so a simultaneous ring call group can be evaluated against the wrong site and sent to the wrong SBC. Giving each office a unique subnet and updating the network site and subnet definitions removes the ambiguity while keeping Location-Based Routing enforced. The office-specific call group option is the strongest distractor because it would be a normal way to limit ring targets, but it does not fix the overlapping address space that breaks LBR location detection. The general rule is: before enabling simultaneous ring under Location-Based Routing, make sure every network site has non-overlapping subnets.
Question 2
Implement and configure Teams Phone
A telecom operator has 60,000 Teams Phone users. You created a custom emergency calling policy for them and must assign it to all 60,000 before the weekend. When you select all users in the Teams admin center for a batch policy assignment, the operation rejects the selection. The existing Global emergency calling policy is used by a pilot group and cannot be changed. What should you do?
- A. Modify the Global emergency calling policy to match the custom policy and remove the custom policy.
- B. Submit one PowerShell batch policy assignment operation that targets all 60,000 users.
- C. Create one Microsoft 365 group containing all 60,000 users and assign the policy to that group.
- D. Run consecutive batch policy assignment operations of up to 5,000 users until all are assigned.
Answer: D
Batch policy assignment is capped at 5,000 users per operation, whether you use the Teams admin center or PowerShell. With 60,000 users, you must split the work into multiple batch operations that each stay within that limit. The strongest distractor is the single PowerShell batch containing all 60,000 users; PowerShell does not raise the quota and will reject the operation the same way the admin center did. The group-based option also fails because group policy assignment has a 50,000-member limit, and changing the Global policy is blocked by the scenario. The general rule is to split the population into multiple compliant operations when a deployment exceeds a hard policy-assignment scale limit.
Question 3
Configure and manage Teams Rooms and devices
A gaming studio runs live capture sessions in rooms with Teams Rooms consoles. After a Windows update last night, staff cannot use proximity join: the room no longer appears on their laptops' Teams app. The console still starts scheduled meetings, and all peripherals work. You cannot restart the console while a capture is live, and you cannot change any Teams meeting policy. What should you do first?
- A. Enable the console's Bluetooth radio if the update turned it off.
- B. Toggle the console's Proximity join setting off and then on.
- C. Restart the Teams Rooms console to recover the Bluetooth beacon.
- D. Replace the console's Bluetooth radio with a certified USB adapter.
Answer: A
This is correct because Teams Rooms proximity join depends on the room console's Bluetooth radio broadcasting the beacon that user laptops detect. After a Windows update, that radio can be left disabled even though the console otherwise works, so enabling it is the least disruptive fix and obeys the no-restart constraint. The option to restart the console is the strongest distractor because it is a normal recovery step, but it is ruled out by the live capture constraint. The option that replaces the Bluetooth radio skips basic verification and changes hardware before confirming the radio state, while the option that toggles the local Proximity join setting does not address a radio that the update turned off. The general rule is to resolve Bluetooth radio and beacon state first, then confirm proximity policy, and only then restart or replace hardware.
Question 4
Configure and manage Teams Rooms and devices
Contoso, a global ecommerce retailer, is deploying Teams Rooms in executive meeting rooms. Compliance has ruled that no meeting organized by a room may allow unauthenticated PSTN callers, because customer information could be exposed to callers whose identities are not verified. You are identifying the requirements for the resource account of the first room. Which resource account configuration is required?
- A. Apply a Teams meeting policy to the resource account that blocks anonymous users from joining its meetings.
- B. Assign the resource account a Microsoft Teams Rooms Pro license before creating the room mailbox.
- C. Enable Audio Conferencing on the resource account to give every room its own dial-in conference ID and bridge.
- D. Leave Audio Conferencing unassigned so no PSTN dial-in bridge is available for room-hosted meetings.
Answer: D
The compliance constraint forbids unauthenticated PSTN callers. Audio Conferencing is the licensing component that provisions PSTN dial-in numbers and a conference bridge for the resource account, so leaving it unassigned is what removes that meeting entry path. The strongest distractor is the anonymous-join meeting policy option: it is a valid identity control, but it governs people who join from a Teams client without signing in and does not remove the PSTN dial-in bridge created by Audio Conferencing. The general rule is to determine which meeting entry channels are allowed, add only the licenses that create those channels, and use meeting policies on the resource account to control behavior inside those channels.
Question 5
Configure and manage Teams meetings, webinars, and town halls
At a university, the research group’s meeting template policy allows only a seminar template that makes recording mandatory. The public engagement group’s meeting template policy allows only a template that disables recording. A seminar coordinator belongs to both groups and has no direct policy assignment. The admin assigned a policy to each group with different priorities. Which meeting template policy applies to the coordinator?
- A. The public engagement group’s policy, because it should reach the broader external audience.
- B. The policy assigned to the group with the highest priority in the assignment.
- C. A merged policy that allows both the recording-mandatory and recording-disabled templates.
- D. The research group’s policy, because the stricter security requirement should dominate.
Answer: B
This is correct because a user who belongs to multiple groups receives only one effective meeting template policy: the policy assigned to the group with the highest priority when there is no direct policy assignment. Policies are not merged, and the intended security or outreach goal does not override the assignment precedence. The strongest distractor is the merged-policy option: it treats two group policies as additive, but Teams applies a per-user policy ceiling of exactly one effective policy, not a union of allowed templates. The general rule is to resolve effective policy by direct assignment first, then highest-priority group assignment, with the tenant-wide global policy as the fallback.
Question 6
Implement and configure Teams Phone
A hospital system is assigning Teams Calling Plan licenses and phone numbers to nurses who work at two campuses. The campuses are connected by a routed network, and both local LANs use 10.10.10.0/24, so an IP address is not unique to a campus. You must ensure that an emergency call from any nurse reaches the public safety answering point (PSAP) for the campus where the nurse is currently located. What should you do first?
- A. Create one network region and one network site, then associate the existing overlapping subnet with that site.
- B. Renumber one campus to use unique subnets, define network sites, and enable dynamic emergency calling.
- C. Enable location-based routing at each campus and route all emergency calls through a Direct Routing gateway.
- D. Assign each nurse a Calling Plan license and number, then attach a static emergency address for their home campus.
Answer: B
Renumbering one campus is correct because dynamic emergency calling identifies a user's current location by matching the client's IP subnet to one network site. When the same subnet is used at two campuses, that mapping is ambiguous, so Teams cannot choose the correct PSAP. The strongest distractor is the static home-campus emergency address option: it appears valid because each nurse is assigned a phone number and an address, but it fails for nurses who are at the other campus because their emergency call would still be associated with the home campus PSAP. The general rule is that a subnet can be associated with only one network site, so overlapping or conflicting IP address ranges must be renumbered or consolidated before dynamic emergency calling can be relied on.
Question 7
Configure and manage Teams Rooms and devices
A logistics and fleet operator has Teams Rooms in 50 dispatch offices. In one office, Room A's network path is rate-limited to 5 Mbps downstream by a switch policer. Users in Room A report choppy video. You check the Teams Rooms device health report and see a network alert. The network administrator says the office has a 100 Mbps internet circuit, ten times the Teams Rooms minimum, so bandwidth is not the issue. What should you tell them?
- A. Apply QoS to prioritize Room A's traffic; this raises effective speed above the 5 Mbps path limit.
- B. Ignore the network alert because the 100 Mbps site circuit is far above the published minimum.
- C. Update the console firmware; network alerts can appear if the console is not on the latest supported version.
- D. Remove the 5 Mbps rate limit; the minimum applies per device connection, not per site aggregate.
Answer: D
Teams Rooms bandwidth guidance is a per-device/per-connection minimum: the path that serves the room must be able to deliver 10 Mbps down and 5 Mbps up. A site's aggregate circuit total does not clear that per-device ceiling. The correct action is to remove the downstream 5 Mbps rate limit on Room A's path. The strongest distractor is the answer that trusts the 100 Mbps aggregate and tells you to ignore the alert; it treats aggregate capacity as proof of per-connection capacity. QoS can help when a shared circuit is congested, but it cannot raise a policer's hard speed ceiling. The rule is to audit each Teams Rooms device's individual network path, not just the site circuit, when interpreting device health alerts.
Question 8
Implement and configure Teams Phone
A university research group uses Direct Routing from an on-premises SBC for its lab telephones. Inbound calls to the group's main number intermittently fail before reaching Teams. The lab's research protocol prohibits using real-call media or call detail records during troubleshooting. You need to check the Direct Routing signaling path. What should you do?
- A. Run the SBC diagnostic in Teams admin center to send a SIP OPTIONS probe.
- B. Ask a lab assistant to call the main number and review the call analytics in Teams admin center.
- C. Enable a SIP trace on the SBC to capture the failing INVITE messages from the lab's trunk.
- D. Inspect the failed call's call detail record in Teams admin center to see the SIP response code.
Answer: A
This is correct because the compliance constraint bars call detail records and real-call media. The SBC diagnostic in the Teams admin center sends a synthetic SIP OPTIONS probe between Direct Routing and the SBC, validating the signaling path without creating a call or a call detail record. The strongest distractor is inspecting the failed call's call detail record: it is also done in the Teams admin center and would normally be a sound step, but it relies on real call metadata, which the scenario prohibits. The SBC SIP trace and the test call are wrong for the same reason. The general rule is to use the out-of-band SIP OPTIONS connectivity check when call-specific data is restricted.
Question 9
Configure and manage Teams meetings, webinars, and town halls
Hana Airlines’ safety office must present a required Teams webinar to 1,400 employees. Each employee must register individually so the airline can confirm completion. The tenant has no Teams Premium licenses and cannot purchase them. A junior administrator says the 1,000-attendee webinar limit is tenant-wide and asks you to change a policy so all 1,400 can join one webinar. What should you do?
- A. Create two standard webinars and split the employees; the 1,000-attendee ceiling is per event, not a tenant-wide total.
- B. Buy a Teams Premium license for the organizer and enable the large-webinar policy; one webinar can host all 1,400.
- C. Run the session as a Teams live event for 1,400 employees; live events do not use the 1,000-attendee webinar ceiling.
- D. Create one webinar with a public registration link for the last 400; public attendees are outside the 1,000-attendee count.
Answer: A
Creating two standard webinars is correct because the 1,000-attendee ceiling for webinars applies per webinar event, not as an aggregate tenant allowance. Each of the two events can independently seat up to 1,000 users, so 1,400 employees fit within the per-event capacity. The large-webinar option is the strongest distractor: it is a real way to host more attendees in one event, but large webinars require a Teams Premium license for the organizer, and the scenario rules out purchasing Teams Premium. The live-event and public-registration options do not preserve the required individual Teams webinar registration or do not remove the attendee count. The general rule is to treat webinar capacity limits as per-event ceilings; you can run multiple webinars in parallel without pooling their attendee capacities.
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