Cisco Exam 300-820 Topic 17 Question 66 Discussion

Actual exam question for Cisco's 300-820 exam

Question #: 66
Topic #: 17

[All 300-820 Questions]

Which complication does a NAT introduce in SDP for a SIP call?

AAdditional headers due to NAT encapsulation can cause the packet size to exceed the MTU.

BWhen the client is behind a NAT they may be unable to determine the appropriate offset due to time zones.

CThe IP address specified in the connection data field may be an unrouteable internal address.

DThe encryption keys advertised in the SDP are only valid for clients not behind a NAT.

Show Suggested Answer

Suggested Answer: D

by Adelina at Dec 26, 2023, 05:49 PM

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Alesia

8 months ago

I'm not so sure about option C. I was thinking option A might be the correct answer. The additional headers from NAT encapsulation could cause the packet size to exceed the MTU, leading to fragmentation and other issues.

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Theodora

8 months ago

Option A seems to be the consensus choice for the complication introduced by NAT in SDP.

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Amos

8 months ago

Agreed, the impact on packet size due to NAT encapsulation is a common issue.

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Jarvis

8 months ago

I think option A is the most likely scenario in this case.

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Diane

8 months ago

Yes, fragmentation due to packet size exceeding MTU is definitely a concern.

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Melvin

8 months ago

True, but if the packet size exceeds the MTU, that could lead to further complications.

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Denny

8 months ago

But option C raises a valid point too. The IP address specified may indeed be unrouteable.

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Venita

8 months ago

I agree, option A seems plausible. The extra headers from NAT could definitely impact packet size.

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Lenna

8 months ago

Yeah, I agree with Johna. The IP address specified in the connection data field might be an internal, unrouteable address, which could cause problems. That makes the most sense to me.

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Johna

8 months ago

Okay, so we know that NAT can cause some issues with the IP addresses and ports used in the SDP. I'm leaning towards option C as the correct answer.

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Vonda

8 months ago

Hmm, this question is tricky. I'm not entirely sure about the complications that NAT can introduce in SDP for a SIP call. Let me think through the options carefully.

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