Considering the message flow to an Avaya Aura Contact Center (AACC) agent, which statement about the media path from the incoming caller is true?

A customer calls Avaya support because their 3rd party SIP telephones are not working. Support is able to confirm that the telephones are not supported and do not integrate with Communication Manager or Session Manager.
Which two pre-implementation steps were omitted? (Choose two.)

A maintenance engineer logs onto the Command Line Interface (CLI) of Avaya Aura Messaging (AAM) and issues the vmstat command.
What information will the display present?

traceSBC is a tool that can be used to trace the calls that cross through the Avaya Session Border Controller (SBC), calls to the public network, or calls from the public network.
Which two statements describe another function of traceSBC? (Choose two.)

Which two methods can be used to determine the status of the Switch/CTI Link between Avaya Aura Communication Manager (CM) and Avaya Aura Application Enablement Services (AES)? (Choose two.)