The Ajax Corporation is designing an IP telephony network using Cisco MCS 7845 Series servers, each
one capable of supporting 7500 devices. The design must meet these requirements:
-Be cost-effective
-Support up to 7500 phones
-Provide a minimal level of redundancy
A.
Two Cisco Unified Communications Manager servers:1 publisher and TFTP server combined.1 primary
subscriber.
B.
Three Cisco Unified Communications Manager servers:1 publisher and TFTP server combined.1
primary subscriber.1 backup subscriber.
C.
Four Cisco Unified Communications Manager servers:1 publisher.1 TFTP server.1 primary subscriber.1
backup subscriber.
D.
Five Cisco Unified Communications Manager servers:1 publisher.1 TFTP server.1 primary subscriber.2
backup subscribers.
Correct answer should be A
B is not cost effective, because 2 servers are enough for 10k phones
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It seems that B should be the answer as the questions asks for “Provide a minimal level of redundancy” should require an additional node as a Subscriber.
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It’s B as it is the recommended design. I believe the cost effective is there to confuse people.
“Deploy a single Cisco Unified CM cluster for an enterprise with a central site and remote offices. Deploy call processing subscribers in pairs for scalability and redundancy.”
https://www.cisco.com/c/en/us/td/docs/solutions/PA/overview/12x/clbpa120.html
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