Which endpoint feature is supported using Mobile and Remote Access through Cisco Expressway?
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A. B. C. D.C.
The correct answer is B. SSO.
Mobile and Remote Access (MRA) through Cisco Expressway is a feature that allows remote workers to securely access their company's collaboration resources, such as voice and video conferencing, instant messaging, and presence, from outside the corporate network. It provides secure access to endpoints such as IP phones, video conferencing systems, and Jabber clients from anywhere in the world, using any device.
One of the key features of MRA is Single Sign-On (SSO), which allows users to log in once and access all collaboration resources without the need to enter their username and password again. This feature is particularly useful for remote workers who need to access collaboration tools frequently and securely.
Option A, SRST, is not a feature supported by MRA through Cisco Expressway. SRST (Survivable Remote Site Telephony) is a Cisco Unified Communications Manager (CUCM) feature that provides call processing redundancy for IP phones in case of a WAN failure.
Option C, H.323 registration proxy to Cisco Unified Communications Manager, is a feature that allows H.323-based endpoints to register with CUCM using the Expressway as a proxy. This feature is not related to MRA.
Option D, MGCP gateway registration, is a feature that allows Media Gateway Control Protocol (MGCP) gateways to register with CUCM using the Expressway as a proxy. This feature is also not related to MRA.
Therefore, the correct answer is B. SSO, which is a feature supported by MRA through Cisco Expressway.