300-085 Question #214: Real Exam Question with Answer & Explanation

The correct answer is B: Ensure that all Cisco VCS systems are synchronized to a reliable NTP service. Configuring Mobile and Remote Access on Cisco VCS Control requires NTP synchronization and correct hostname and domain name configuration to establish trusted TLS connections.

Question

When configuring mobile and remote access on Cisco VCS Control, what are two required configuration steps? (Choose two.)

Options

AEnsure that provisioning is enabled
BEnsure that all Cisco VCS systems are synchronized to a reliable NTP service
CEnsure that the system host name and domain name are specified
DEnsure that local DHCP servers are specified.
ESet Unified Communications mode to peer-to-peer.

Explanation

Configuring Mobile and Remote Access on Cisco VCS Control requires NTP synchronization and correct hostname and domain name configuration to establish trusted TLS connections.

Common mistakes.

A. Provisioning is an optional feature for device configuration deployment and is not a required step for enabling the Mobile and Remote Access traversal path itself.
D. Local DHCP server specification is not a configuration requirement on the VCS Control for MRA; DHCP is managed at the network infrastructure level and is not configured within VCS.
E. The Unified Communications mode on VCS Control must be set to 'Mobile and remote access', not 'peer-to-peer'; peer-to-peer mode does not enable the MRA traversal functionality.

Concept tested. Cisco VCS Control Mobile and Remote Access prerequisites

Reference. https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/expressway/config_guide/X12-7/exwy_b_mra-expressway-deployment-guide/exwy_m_requirements-and-limitations.html

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