Cisco Exam 300-820 Topic 12 Question 91 Discussion

Actual exam question for Cisco's 300-820 exam

Question #: 91
Topic #: 12

Cisco media traversal technology has enabled a secure environment where internal video endpoints call and receive calls from external video endpoints. How does the Expressway-C and Expressway-E communicate?

AExpressway-C establishes an outgoing request to Expressway-E, enabling the Expressway-E in the DMZ to notify the internal Expressway-C of an incoming call from an external endpoint.

BInternal endpoints are registered to Expressway-E in the DMZ. Expressway-C, which is also in the DMZ, will receive and make calls on behalf of Expressway-E because they are in the same network.

CExpressway-E establishes an outgoing request to Expressway-C, enabling the Expressway-C in the DMZ to notify the internal Expressway-E of an incoming call from an external endpoint.

DInternal endpoints are registered to Expressway-C in the DMZ. Expressway-E, which is also in the DMZ, will receive and make calls on behalf of Expressway-C because they are in the same network.

Show Suggested Answer

Suggested Answer: D

by Launa at Jan 13, 2025, 03:39 AM

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Howard

11 days ago

That's an interesting point, Alesia. But I still think A makes more sense in terms of how the communication is established securely.

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Alesia

12 days ago

I disagree, I believe the answer is B. Both Expressway-C and Expressway-E are in the DMZ, so they can communicate directly.

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Howard

16 days ago

I think the answer is A. Expressway-C initiates the communication with Expressway-E for external calls.

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