You are the Skype for Business architect for your company.
You deploy a full Skype for Business environment that consists of the following roles:
* 1 Skype for Business Standard Edition Front End server
* 1 server running SQL Server
* 1 Skype for Business Edge server
* 1 Skype for Business Mediation Server
* 1 server running Office Online Server
* 1 reverse proxy
You configure Skype for Business Edge to use the following services:
* Remote user access
* Web conferencing
* Audio and Video relay
* Federation with other companies that run Lync Server 2010/2013 or Skype for Business 2015.
You run the Get-CsAccessEdgeConfiguration cmdlet.
The system displays the output shown in the exhibit. Next, you run the Get-CsAI lowed Domain cmdlet.
The system displays an empty result.
You need to configure Skype for Business to allow users from your company to communicate with users from companyA.com. Security requirements do not permit communication with users from any other domains.
Which cmdlet should you run?

Correct Answer: B
Explanation/Reference:
Explanation:
You should run the New-CsAllowed Domain cmdlet. The New-CsAI lowed Domain cmdlet allows you to add a SIP domain to contact the Access Edge, which provides Federation services. You should not run the Set-CsAccessEdgeConfiguration cmdlet. The Set-CsAccessEdgeConfiguration cmdlet allows open federation. Open federation allows end users to contact anyone that has Lync Server 2010/2013 or Skype for Business 2015 as long as they have a valid certificate and also have open federation configured. This does not meet your security requirements.
You should not run the New-CsSipDomain cmdlet. The New-CsSipDomain cmdlet is used to add a SIP domain your Skype for Business topology.
You should not run the New-CsPublicProvider cmdlet. The New-CsPublicProvider cmdlet is used to add connectivity to public IM clouds such as the consumer version of Skype or other hosting providers.
References: https://docs.microsoft.com/en-us/powershell/module/skype/new-csalloweddomain?
view=skype-ps