Cisco Exam 350-801 Topic 10 Question 72 Discussion

Actual exam question for Cisco's 350-801 exam

Question #: 72
Topic #: 10

Refer to the exhibit.

https://i.postimg.cc/C57TkczG/image.png

A call is falling to establish between two SIP Devices The called device answers with these SOP Which SOP parameter causes issue?

AThe calling device did not offer a ptime value

BThe media stream is set to send only

CThe payload for G.711ulaw must be 18.

DThe RTP port is set to 0.

Show Suggested Answer

Suggested Answer: D

The RTP port is used to send and receive media packets during a call. If the RTP port is set to 0, the called device will not be able to send or receive media packets, and the call will fail.

The other options are not correct because:

A) The calling device did not offer a ptime value: The ptime value is used to specify the amount of time between each media packet. If the calling device does not offer a ptime value, the called device will use the default value of 20 milliseconds.

B) The media stream is set to sendonly: The media stream is set to sendonly when the called device is only able to send media packets, and not receive them. This is not a problem, and the call will still succeed.

C) The payload for G.711ulaw must be 18: The payload for G.711ulaw is the type of media packet that is used. The payload must be set to 18 for G.711ulaw, but this is not a problem, and the call will still succeed.

by Kristeen at Mar 20, 2024, 09:35 AM

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Ricki

4 days ago

Haha, I bet the answer is 'D' - the RTP port set to 0. That's just begging for trouble!

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Lauran

5 days ago

You know, I'm not too familiar with SIP protocols, but the way I see it, the 'send only' media stream could be causing problems. That might be worth looking into.

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Leah

6 days ago

Okay, let's see. The called device is answering with some SDP parameters. I think the issue might be with the 'ptime' value, since the question asks about that specifically.

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Dalene

7 days ago

Hmm, this question seems a bit tricky. The exhibit shows some SIP parameters, but I'm not sure which one is causing the issue. Let me take a closer look.

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