You are the Office 365 administrator for your company. The company uses Microsoft Exchange Online and
Microsoft Lync Online.
An employee named User1 has the user name, email address, and Lync address User1@contoso.com.
The employee requests that you change only his Lync address to User1-Sales@contoso.com.
You start a Windows PowerShell session and run the following commands, providing your admin account credentials when prompted:
You need to complete the process of updating the employee’s Lync address without affecting any other addresses.
Which Windows PowerShell command should you run next?

A.
Set-Mailbox -Identity $ID -PrimarySmtpAddress $NewAddress
B.
Set-MsolUser -UserPrincipalName $ID –ProxyAddresses @{add=”$NewAddress”; remove=”$OldAddress”}
C.
Set-CsUser -Identity $ID –ProxyAddresses @{add=”$NewAddress”; remove=”$OldAddress”}
D.
Set-CsUser –Identity $ID –SipAddress $NewAddress
Explanation:
You can easily change the SIP address by running the Set-CsUser cmdlet:
Set-CsUser –Identity “Ken Myer” –SipAddress sip:kenmyer@litwareinc.com
D is wrong cos AudioVideoDisabled is the only parameter that you can use together with the Set-CsUser cmdlet in Skype for Business Online
https://support.microsoft.com/en-us/help/2909916/skype-for-business-online-admins-can-t-use-the-set-csuser-cmdlet-in-sk
There are no right answers here
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you are misinformed friend, answer correct is D
https://docs.microsoft.com/en-us/powershell/module/skype/Set-CsUser?view=skype-ps
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that command generates error “Unable to set “SipAddress”. This parameter is restricted within Remote Tenant PowerShell”. Jamie is right on this one.
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. I think it would look something like this:
Set-mailbox $OldAddress -EmailAddress SIP:$NewAddress
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sorry im wrong. it D. https://blogs.technet.microsoft.com/nexthop/2011/03/21/modify-the-sip-address-of-an-enabled-lync-server-user/
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