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Cisco CCNP Collaboration 300-820 Question # 49 Topic 5 Discussion

300-820 Exam Topic 5 Question 49 Discussion:
Question #: 49
Topic #: 5

A company identifies a fraudulent toil situation. An engineer reviews the Cisco UCM call detail records and discovers that fraudulent calls originate from a Cisco Expressway-C server and are then routed to a 10-digit PSTN number. What must be configured to limit incoming Expressway calls to the internal Cisco UCM range of extensions 5XXXX?
A.

calling search space that contains all the partitions on the Unified Communications Manager SIP trunk to Expressway

B.

call policy rule from the DNS zone to allow a destination regex pattern of \d.*@abc.com

C.

unique search rule with a regex pattern of [5]\d{4}@abc.com that targets the neighbor zone

D.

call policy rule from the DNS zone to allow a destination regex pattern of .*@abc.com

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Actual exam question for Cisco 300-820 exam by Zephyr85550 at May 1, 2026, 8:44:55 PM

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