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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Mitsue

6 months ago

I think both options A and D could potentially cause issues. We should consider them both.

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Stanton

6 months ago

But if the RTP port is set to 0, wouldn't that also prevent the call from establishing properly?

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Natalie

6 months ago

I disagree, I believe the problem lies with option D, the RTP port being set to 0.

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Stanton

6 months ago

I think the issue is caused by option A, the calling device not offering a ptime value.

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Vallie

6 months ago

I think the issue is with the payload for G.711ulaw needing to be 18. That could be causing the problem.

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Brandon

7 months ago

But if the media stream is set to send only, wouldn't that still allow the call to be established?

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Marquetta

7 months ago

I disagree, I believe the problem lies in the media stream being set to send only.

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Earleen

7 months ago

I agree with Brandon, having the RTP port set to 0 would definitely cause a problem.

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Brandon

7 months ago

I think the issue is with the RTP port being set to 0.

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Ricki

8 months 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

8 months 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

8 months 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

8 months 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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