Exam 300-820 topic 1 question 103 discussion

Actual exam question from Cisco's 300-820

Question #: 103
Topic #: 1

An engineer reviews the configuration of a pair of Expressway servers for a company with the domain example.com. The company allows toll fraud calls to reach the Cisco UCM only when it expects externally registered devices to call internal 5-digit extensions. The search history shows that the fraudulent calls have a destination URI of 8 or more digits and several domains. What must the engineer configure to prevent all toll fraud calls from going past the Expressway-E to the internal network?

A. search rules to only route calls with a destination URI of 5 to 8 digits long on the Expressway-E
B. CPL that blocks calls with a destination domain other than example.com on the Expressway-C.
C. search rules to only route calls with a destination domain of example.com on the Expressway-E
D. CPL to block calls with a destination URI with 8 or more digits on the Expressway-E

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Suggested Answer: D 🗳️

by Duke_CT at May 14, 2024, 9:40 a.m.

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Duke_CT

7 months, 1 week ago

To prevent all toll fraud calls from reaching the internal network via Expressway-E, the engineer should configure: D. CPL to block calls with a destination URI with 8 or more digits on the Expressway-E. CPL (Call Policy Language) allows for advanced call routing and policy enforcement on Cisco Expressway. By configuring a CPL rule on the Expressway-E to block calls with a destination URI containing 8 or more digits, the engineer can effectively prevent toll fraud calls from being forwarded to the internal network. This approach ensures that only calls meeting the specified criteria (e.g., internal 5-digit extensions) are allowed to pass through to the Cisco UCM.

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