Which two functionalities does Cisco Expressway provide in the Cisco collaboration architecture? (Choose two.)

Survivable Remote Site Telephony (SRST) functionality is provided by Cisco routers, which take over call processing if the connection to the main CUCM cluster is lost.

Cisco Expressway Core and Edge act as a firewall traversal solution, allowing MRA (Mobile and Remote Access) clients, such as Jabber or Webex App, to register and communicate securely with internal CUCM and other collaboration services from outside the corporate network.

Customer interaction management services are typically provided by Contact Center solutions (e.g., Cisco Unified Contact Center Express/Enterprise), not Cisco Expressway.

Cisco Expressway also enables secure business-to-business or B2B communications, allowing organizations to connect their video conferencing systems and unified communications infrastructure with external organizations over the internet, often using SIP trunks.

MGCP gateway registration is handled directly by Cisco Unified Communications Manager, not Cisco Expressway.