You have an Active Directory domain named contoso.com. Your company has a Microsoft Office 365 subscription. Twenty users are enabled for Microsoft Lync Online. The users frequently travel. The users report that they receive the following error message when they attempt to sign in to Microsoft Lync from the office: “Cannot sign in because the server is temporarily unavailable. If the problem continues, please contact your support team.” You verify that the users can sign in to Lync when they connect from the Internet. You need to ensure that all of the users can sign in to Lync. Which alias (CNAME) record should you create in the internal DNS domain? To answer, select the appropriate record name and the appropriate record target in the answer area.