350-801 · Question #444
Which set of four functions are performed by Cisco Unified Border Element?
The correct answer is A. session control, security, interworking, and demarcation. Cisco Unified Border Element (CUBE) is a session border controller that primarily performs four critical functions: session control, security, interworking between different signaling protocols or media types, and network demarcation.
Question
Which set of four functions are performed by Cisco Unified Border Element?
Options
- Asession control, security, interworking, and demarcation
- Bsession control, security, SIP. and H.323
- CPRI connections, security, faxing, and border enforcement
- Dsession control, meet-me conferencing, interworking, and demarcation
How the community answered
(43 responses)- A95% (41)
- C2% (1)
- D2% (1)
Why each option
Cisco Unified Border Element (CUBE) is a session border controller that primarily performs four critical functions: session control, security, interworking between different signaling protocols or media types, and network demarcation.
CUBE acts as an enterprise session border controller, providing session control for calls, security at the network border, interworking between different VoIP protocols (e.g., SIP to H.323 or vice-versa) and media types, and establishing a clear demarcation point between enterprise and service provider networks.
SIP and H.323 are protocols that CUBE interworks with, not functions performed by CUBE itself.
While CUBE can terminate PRI connections, PRI connections and faxing are specific features rather than fundamental, overarching functions of a session border controller. Border enforcement is too generic and covered by security and demarcation.
Meet-me conferencing is a feature of a conferencing bridge, not a core function of a session border controller like CUBE.
Concept tested: Cisco CUBE primary functions
Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/voice/cube_config/cg/voi-cube-config-cg-book/voi-cube-overview.html
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