350-801 · Question #95
When deploying Mobile and Remote Access (MRA), which two SAN entries are mandatory in the Expressway Series certificates for secure phone registration? (Choose two.)
The correct answer is A. Unified CM Phone security profile name in Expressway-C certificate F. Unified CM registration domain in Expressway-E certificate. This question identifies the two mandatory Subject Alternative Name (SAN) entries required in Expressway-C and Expressway-E certificates for secure phone registration during Mobile and Remote Access (MRA) deployment.
Question
When deploying Mobile and Remote Access (MRA), which two SAN entries are mandatory in the Expressway Series certificates for secure phone registration? (Choose two.)
Options
- AUnified CM Phone security profile name in Expressway-C certificate
- BUnified CM registration domain in Expressway-C certificate
- CUnified CM Phone security profile name in Expressway-E certificate
- DIM and Presence Chat node alias in Expressway-C certificate
- EIM and Presence Chat node alias in Expressway-E certificate
- FUnified CM registration domain in Expressway-E certificate
How the community answered
(28 responses)- A89% (25)
- B7% (2)
- D4% (1)
Why each option
This question identifies the two mandatory Subject Alternative Name (SAN) entries required in Expressway-C and Expressway-E certificates for secure phone registration during Mobile and Remote Access (MRA) deployment.
The Unified CM Phone security profile name is a mandatory SAN entry in the Expressway-C certificate, allowing phones to securely trust Expressway-C as a valid proxy for CUCM when registering.
The Unified CM registration domain is mandatory for Expressway-E, not Expressway-C.
The Unified CM Phone security profile name is mandatory for Expressway-C, not Expressway-E.
IM and Presence Chat node aliases are relevant for IM&P services, not for basic MRA phone registration, and are not mandatory SAN entries for phone registration.
IM and Presence Chat node aliases are relevant for IM&P services, not for basic MRA phone registration, and are not mandatory SAN entries for phone registration.
The Unified CM registration domain is a mandatory SAN entry in the Expressway-E certificate, allowing remote phones to securely resolve and trust Expressway-E as a valid entry point for CUCM registration.
Concept tested: MRA certificate requirements (SAN entries for Expressway-C and Expressway-E)
Source: https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/expressway/config_guide/X14-2/MRA/cisco-expressway-mra-deployment-guide-X14-2.html
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