300-820 · Question #201
Cisco Expressway is often deployed in which of the following configurations?
The correct answer is D. As a pair with Cisco Expressway-C, with connection to CUCM and Expressway-E deployed in. Cisco Expressway is standardly deployed as a pair where Expressway-C resides inside the enterprise network connected to CUCM, while Expressway-E resides in the DMZ for external connectivity.
Question
Cisco Expressway is often deployed in which of the following configurations?
Options
- AAs a pair with Cisco Expressway-E, with connection to CUCM and Expressway-C deployed in
- BStandalone with Cisco Expressway-E
- CStandalone with Cisco Expressway-C
- DAs a pair with Cisco Expressway-C, with connection to CUCM and Expressway-E deployed in
How the community answered
(60 responses)- A2% (1)
- C3% (2)
- D95% (57)
Why each option
Cisco Expressway is standardly deployed as a pair where Expressway-C resides inside the enterprise network connected to CUCM, while Expressway-E resides in the DMZ for external connectivity.
This option incorrectly inverts the roles, placing Expressway-E as the internal node connected to CUCM, which contradicts the standard MRA deployment model.
Standalone deployment of Expressway-E without Expressway-C cannot provide the firewall traversal and internal CUCM connectivity required for MRA.
Standalone Expressway-C without Expressway-E has no mechanism to facilitate external client access through the firewall.
The recommended Cisco Mobile and Remote Access (MRA) architecture places Expressway-C inside the internal network where it connects to CUCM and other internal services, while Expressway-E is deployed in the DMZ to handle external client connections, forming a matched pair.
Concept tested: Cisco Expressway-C and Expressway-E paired MRA deployment
Source: https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/expressway/config_guide/X14-3/exwy_b_mra-deployment-guide/exwy_m_solution-overview.html
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