300-820 practice question 28 of 30

Which method is used to send the incoming call request to the client when the traversal server receives an incoming call for the traversal client?

Answer options

A: Requesting for permission from the firewall

B: Using an existing keep-alive connection opened by the client Correct answer

C: Opening an outbound connection directly to the client through the firewall

D: Opening an inbound connection directly to the client through the firewall

Correct Answer:

B. Using an existing keep-alive connection opened by the client

Explanation

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