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Cisco 300-820 Exam - Topic 12 Question 91 Discussion

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?
D) Internal 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.
A) Expressway-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.
B) Internal 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.
C) Expressway-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.

Cisco 300-820 Exam - Topic 12 Question 91 Discussion

Actual exam question for Cisco's 300-820 exam
Question #: 91
Topic #: 12
[All 300-820 Questions]

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?

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Suggested Answer: D

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

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Patria
9 months ago
Not sure about A, seems a bit off to me.
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Layla
9 months ago
I had no idea Expressway-E could do that!
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Orville
10 months ago
Wait, isn't it C? That sounds more accurate to me.
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Daniel
10 months ago
Totally agree, A makes the most sense!
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Maxima
10 months ago
I think it's A. That's how it usually works.
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Lemuel
10 months ago
I thought internal endpoints register with Expressway-C, but I'm confused about how the communication flow works between the two Expressways.
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Yan
11 months ago
I feel like both Expressway-C and Expressway-E are in the DMZ, but I can't recall which one is responsible for notifying the other about incoming calls.
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Johnna
11 months ago
I remember practicing a question similar to this, and I think Expressway-E is the one that sends the request to Expressway-C for incoming calls.
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Lamonica
11 months ago
I think Expressway-C initiates the communication with Expressway-E, but I'm not entirely sure if it's the outgoing request or the other way around.
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Lynelle
11 months ago
Based on my understanding, I think the correct answer is A. Expressway-C establishes an outgoing request to Expressway-E to enable the external Expressway-E to notify the internal Expressway-C of an incoming call.
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Marcelle
11 months ago
I'm a bit confused by the options. I need to carefully read each one and visualize how the communication would work between the two Expressway components.
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Sherrell
11 months ago
Okay, let me think this through. The key is understanding how the two Expressway components communicate to enable secure video calls between internal and external endpoints.
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Viola
11 months ago
This question seems straightforward, but I want to make sure I understand the relationship between Expressway-C and Expressway-E before selecting an answer.
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Veronique
1 year ago
This question is as clear as mud. Maybe Cisco should consider renaming their products to something more straightforward, like 'Expressway A' and 'Expressway B'.
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Graciela
1 year ago
I'm just going to guess and say Option D. It's the only one that doesn't mention the Expressway-C establishing an outgoing request to Expressway-E.
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Gwenn
1 year ago
Yeah, Expressway-E and Expressway-C need to work together to ensure secure communication between internal and external video endpoints.
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Elfrieda
1 year ago
Expressway-E and Expressway-C must communicate somehow for the internal and external calls to work.
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Reita
1 year ago
I think Option D is correct. It makes sense that the internal endpoints are registered to Expressway-C in the DMZ.
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Mozell
1 year ago
Hmm, this one's tricky. I'm going to go with Option B, since it mentions that internal endpoints are registered to Expressway-E in the DMZ, and Expressway-C will handle the calls on behalf of Expressway-E.
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Nobuko
1 year ago
It's great to see how Cisco's media traversal technology enables such secure communication. Option B really highlights the role of Expressway-C and Expressway-E in this process.
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Jamal
1 year ago
Expressway-C and Expressway-E definitely work together to ensure secure communication between internal and external video endpoints. Option B explains that setup perfectly.
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Lucia
1 year ago
I agree, Option B seems to be the most logical choice. It's all about how the internal and external endpoints communicate through the Expressways.
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Martin
1 year ago
I think Option B is correct. Expressway-C and Expressway-E are in the same network, so it makes sense that Expressway-C will handle the calls for Expressway-E.
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Brent
1 year ago
I'm not entirely sure, but I think Option C might be the right answer. Expressway-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.
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Jolene
1 year ago
Expressway-C in the DMZ notifies the internal Expressway-E of incoming calls from external endpoints.
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Ocie
1 year ago
I believe Expressway-E sends a request to Expressway-C for incoming calls.
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Shawna
1 year ago
I think Option C is correct. Expressway-E initiates communication with Expressway-C.
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Farrah
1 year ago
Option A seems to be the correct answer. Expressway-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.
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Annice
1 year ago
It's important for the internal and external endpoints to communicate securely through Expressway-C and Expressway-E.
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Ma
1 year ago
Yes, that's right. Expressway-C sets up the connection with Expressway-E in the DMZ.
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Laurel
1 year ago
I think option A is correct. Expressway-C initiates the communication with Expressway-E for external calls.
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Howard
1 year 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
1 year 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
1 year ago
I think the answer is A. Expressway-C initiates the communication with Expressway-E for external calls.
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