See thesolution in the explanation below
Explanation:
To deploy the Microsoft Viva Connections app to Teams and install the app as the first item on the app bar of the Teams client for all users, you need to use the Teams admin center and PowerShell. Here are the steps to follow:
Sign in to the Teams admin center with your Microsoft 365 username and password1.
In the left navigation, go to Teams apps > Manage apps.
Click Upload and then select the Viva Connections app package that you created using PowerShell2. If you have not created the app package yet, you can follow the instructions in this article to do so.
After uploading the app package, click on the app name and then click Publish.
In the left navigation, go to Teams apps > Setup policies.
Select an existing policy or create a new one by clicking Add.
In the Setup policy pane, under Installed apps, click Add apps and then select the Viva Connections app from the list.
Drag and drop the Viva Connections app to reorder it as the first item on the app bar.
Click Save and then Close.
To assign the setup policy to all users, you can use PowerShell to run the following cmdlet:
Get-CsOnlineUser | Grant-CsTeamsAppSetupPolicy -PolicyName "YourPolicyName" Replace "YourPolicyName" with the name of the policy that you created or modified in step 6.
Note: It may take up to 24 hours for the changes to take effect.
Now, you have deployed and installed the Microsoft Viva Connections app to Teams as the first item on the app bar for all users.

Reference:
https://docs.microsoft.com/en-us/microsoftteams/coexistence-chat-calls-presence

Reference:
https://docs.microsoft.com/en-us/microsoftteams/direct-routing-landing-page
https://docs.microsoft.com/en-us/microsoftteams/calling-plan-landing-page
https://docs.microsoft.com/en-us/skypeforbusiness/skype-for-business-hybrid-solutions/plan-your-phone-system-cloud-pbx-solution/plan-skype-for-business-cloud-connector-edition This is a case study. Case studies are not timed separately. You can use as much exam time as you would like to complete each case. However, there may be additional case studies and sections on this exam. You must manage your time to ensure that you are able to complete all questions included on this exam in the time provided.
To answer the questions included in a case study, you will need to reference information that is provided in the case study. Case studies might contain exhibits and other resources that provide more information about the scenario that is described in the case study. Each question is independent of the other questions in this case study.
At the end of this case study, a review screen will appear. This screen allows you to review your answers and to make changes before you move to the next section of the exam. After you begin a new section, you cannot return to this section.

Reference:
https://docs.microsoft.com/en-us/microsoftteams/network-planner
https://docs.microsoft.com/en-us/microsoftteams/difference-between-call-analytics-and-call-quality-dashboard