Exam MS-700 topic 3 question 14 discussion

A. Why? You need to ensure that users can evaluate Microsoft Teams = FULL set of features that Teams normally offer. Islands allow for both clients to work independently as well as retain PSTN calls in SfB: "To avoid a confusing or regressed Skype for Business experience, the Skype for Business handles the following integrations that aren't handled in Teams Islands mode: External (federated) communications. PSTN voice services and voice applications, Office integration. HID controls for USB devices. Several other integrations."

The answer is D, please note that coexistence mode "Meeting first" is also know as S4BWithTeamsCollaborationAndMeetings, in this mode, users will use Teams to schedule and conduct their meetings. Private chat and calling remain on Skype for Business. this is what the question is about, to retain PSTN functionality within S4B.

D is correct: Doc says "if you have significant Skype for Business Server on-premises assets with a complex Enterprise Voice deployment, but want your users to enjoy modern meetings as quickly as possible, you might want to evaluate using the Skype for Business with Teams Collaboration and Meetings mode, also known as Meetings First." which is S4BWithTeamsCollaborationAndMeetings,

A - Default configuration for hybrid organizations. Allows a single user to evaluate both clients side by side. Chats and calls can land in either client, so users must always run both clients. To avoid a confusing or regressed Skype for Business experience, external (federated) communications, PSTN voice services and voice applications, Office integration, and several other integrations continue to be handled by Skype for Business.

"If you want to evaluate Microsoft Teams while maintaining PSTN calling by using the Skype for Business client, you should use the "Skype for Business with Teams Collaboration" coexistence mode. This mode allows users to use both Skype for Business and Microsoft Teams simultaneously, and provides interoperability between the two platforms. " ChatGPT

correct answer is D, Meetings First is an alternative to using Islands mode that prioritizes the Teams meetings experience

Islands mode allow user to use Telephony on Sfb while using Teams

Answer is A.

Trying to find the trick in this question, I suspect something is missing as all 4 answers are technically correct, PSTN Calling ALWAYS remains in Skype unless in TeamsOnly. Persistant Chat indicates that this is an Onprem environment, but regardless of mode, unless the user is Migrated to Teams thus TeamsOnly, PSTN will always remain onprem. IF evaluating, then I would lean towards A being the "most" correct...

Option A

https://docs.microsoft.com/en-us/microsoftteams/teams-and-skypeforbusiness-coexistence-and-interoperability but want your users to enjoy modern meetings as quickly as possible, you might want to evaluate Meetings First as an alternative path.

The answer is D. This document explains it from the very beginning https://docs.microsoft.com/en-us/microsoftteams/meetings-first Yes, options A and B could work but looking at that link, makes it very clear.

To avoid a confusing or regressed Skype for Business experience, the Skype for Business handles the following integrations that aren't handled in Teams Islands mode: External (federated) communications. PSTN voice services and voice applications, Office integration. HID controls for USB devices. Several other integrations. Phone System isn't supported in Teams in Islands mode. Islands mode doesn't support Enterprise Voice client is Skype for Business. So it is Islands A.

If you look below answer you see this link: https://docs.microsoft.com/en-us/microsoftteams/teams-and-skypeforbusiness-coexistence-and-interoperability If you scroll down on link you will see this headline "Skype for Business with Teams Collaboration and Meetings, also known as Meetings First" that mean B, and D answer is the same. You can than choose only one answer. I will probably choose A.

A. Islands

Agree with A

Agree with A