Cisco Exam 300-820 Topic 15 Question 83 Discussion

Actual exam question for Cisco's 300-820 exam

Question #: 83
Topic #: 15

[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 Elli at Sep 17, 2024, 07:45 PM

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Erinn

2 months ago

I'm going with C. The NAT's address translation is the key issue here, not some made-up problem with time zones.

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Franchesca

2 months ago

Haha, I bet the exam writers were trying to trick us with that 'time zones' option in B. Nice try, but I'm not falling for that one!

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Noelia

2 months ago

D can't be right, because the encryption keys should work regardless of whether the client is behind a NAT or not.

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King

1 months ago

A) Additional headers due to NAT encapsulation can cause the packet size to exceed the MTU.

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Cassi

1 months ago

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

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Argelia

2 months ago

C) The IP address specified in the connection data field may be an unrouteable internal address.

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Lyla

2 months ago

A) Additional headers due to NAT encapsulation can cause the packet size to exceed the MTU.

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Edgar

2 months ago

C seems to be the most logical choice. The NAT would replace the internal IP address with an external one, making it unrouteable.

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Jesse

2 months ago

A) Additional headers due to NAT encapsulation can cause the packet size to exceed the MTU.

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Wilda

2 months ago

C) The IP address specified in the connection data field may be an unrouteable internal address.

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Gerri

2 months ago

A) Additional headers due to NAT encapsulation can cause the packet size to exceed the MTU.

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Paz

3 months ago

I believe the IP address specified in the connection data field being unrouteable is also a major issue with NAT in SDP.

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Isaac

3 months ago

I agree with Aretha, additional headers due to NAT encapsulation can definitely cause that issue.

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Aretha

3 months ago

I think the complication introduced by NAT in SDP is the packet size exceeding MTU.

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Ahmed

3 months ago

I think the correct answer is C. The IP address in the SDP connection data field would be an unrouteable internal address if the client is behind a NAT.

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Magnolia

2 months ago

Yes, having an unrouteable internal address in the connection data field can definitely cause issues with NAT in SIP calls.

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Magnolia

2 months ago

I agree, option C seems to be the most likely complication with NAT in SDP for a SIP call.

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