You are the Office 365 administrator for a company.

You must modify the configuration of the Office 365 tenant to allow users to instant message users only with partner companies.

You need to configure Office 365 tenant.

What

should you use?

A. the Windows PowerShell

Set-CsPersistentChatPolicy

cmdlet

B. the Microsoft Exchange admin center

C. the Office 365 admin center

D. the Windows PowerShell

Set-CsExternalAccessPolicy

cmdlet

Explanation:

The Set-CsExternalAccessP

olicy cmdlet allows you to change the properties of an existing external access policy. External access policies determine whether or not your users can:

communicate with users who have Session Initiation Protocol (SIP) accounts with a federated organizat

ion.

communicate with users who have SIP accounts with a public instant messaging (IM) provider such as MSN.

access Skype for Business Server over the Internet, without having to log on to your internal network.

References: https://docs.microsoft.com/en-u

s/powershell/module/skype/set-csexternalaccesspolicy?view=skype-ps