350-801 CLCOR: Implementing and Operating Cisco Collaboration Core TechnologiesDemo

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QuestionQ175

Voice Gateways and Session Border Controllers

Which traversal server must be installed in the Demilitarized Zone when setting up Mobile and Remote Access?

  • A Cisco IM and Presence
  • B Cisco Expressway-E
  • C Cisco Unified Border Element
  • D Cisco Expressway-C
Explanation

Cisco Mobile and Remote Access deploys Expressway-E in the DMZ to provide the external traversal edge, while Expressway-C resides on the internal network. Cisco’s MRA deployment documentation explicitly distinguishes Expressway-C in the internal network from Expressway-E in the DMZ.

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