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Exam 300-820 All Questions

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Exam 300-820 topic 1 question 1 discussion

Actual exam question from Cisco's 300-820
Question #: 1
Topic #: 1
[All 300-820 Questions]

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

  • A. Additional headers due to NAT encapsulation can cause the packet size to exceed the MTU.
  • B. When the client is behind a NAT they may be unable to determine the appropriate offset due to time zones.
  • C. The IP address specified in the connection data field may be an unrouteable internal address.
  • D. The encryption keys advertised in the SDP are only valid for clients not behind a NAT.
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Suggested Answer: C 🗳️
by rob79 at Oct. 20, 2021, 7:45 p.m.

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veraiden
Highly Voted 2 years ago
Should be C: the problem is that if NAT enabled, some firewalls doesn't write the translated address into the SIP Signalling (fortinet for example has VIP feature that make it works).
upvoted 6 times
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Collabinski
Most Recent 9 months, 3 weeks ago
Selected Answer: C
Cert Guide pg 182 -183 If a device were to try and route to the private IP address of another endpoint, the transmission would fail at the source router, because private IP addresses are not publicly routable
upvoted 1 times
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ysrck
1 year, 3 months ago
Selected Answer: C
Answer is C
upvoted 2 times
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msully
1 year, 5 months ago
Selected Answer: C
Answer is C
upvoted 2 times
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chacthor
1 year, 9 months ago
Selected Answer: C
Should be C
upvoted 3 times
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rob79
2 years ago
This should be C
upvoted 3 times
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