Go back to 642-415 - UCAD - Unified Communications Architecture and Design Exam

Question :-

In the past, Ajax has experienced several phone outages, one of which lasted over seven hours when the company's current PBX had a software crash. Telephone communications are critical, so Ajax would like to design the IP telephony solution to be scalable and highly available. In designing a Cisco Unified Communications Manager clusterfor highest availability, what two options must you include in your design? (Choose two.)
redundant gateway connections to the PSTN
dedicated servers forMoH and conferencing
a 1:1 redundancy scenario in the Cisco Unified Communications Manager cluster
all members of the cluster needing to be in the same LAN or MAN
the deployment of a dedicated publisher and dedicated TFTP server

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