ExamTopics Logo
Mail Us[email protected]
Menu
Amazon Discussions
exam questions

Exam ANS-C00 All Questions

View all questions & answers for the ANS-C00 exam
Go to Exam

Exam ANS-C00 topic 1 question 245 discussion

Exam question from Amazon's ANS-C00
Question #: 245
Topic #: 1
[All ANS-C00 Questions]

Your company has just deployed IPv6 in a VPC. All of the instances currently use a NAT, but once they configured the instances for IPv6 only, they were unable to access the resources on the instances via IPv6. What is the best option to fix this?

  • A. Configure the NAT for IPv6.
  • B. Configure an egress-only internet gateway.
  • C. Add a route for ::/0 to the NAT.
  • D. Add an internet gateway.
Show Suggested Answer Hide Answer
Suggested Answer: B 🗳️
NAT is not compatible with IPv6 and an IGW would allow full access to the instances, which is not good. An egress-only IGW is the best solution.
by awspro2021 at March 12, 2021, 1:16 p.m.
Disclaimers:
  • - ExamTopics website is not related to, affiliated with, endorsed or authorized by Amazon.
  • - Trademarks, certification & product names are used for reference only and belong to Amazon.

Comments

Chosen Answer:
This is a voting comment (?). It is better to Upvote an existing comment if you don't have anything to add.
Switch to a voting comment New
Submit Cancel
student2020
Highly Voted 3 years, 8 months ago
These answers have nothing to do with accessing resources on the instances. Egress-only is for outbound access, not inbound..
upvoted 5 times
...
orwell
Most Recent 3 years, 6 months ago
with respect to VPC traffic flows inbound, therefore it appears IG is the only feasible solution here.
upvoted 1 times
...
ChauPhan
3 years, 7 months ago
B. Configure an egress-only internet gateway.
upvoted 3 times
...
wind
3 years, 7 months ago
IPv6 does not use NAT. Private IPv6 instances use an egress-only Internet gateway that only allows traffic outbound.
upvoted 3 times
...
Nimolee
3 years, 8 months ago
D is correct. Currently only IPv4 hosts have Internet access through NAT gw, not an internet gw.
upvoted 2 times
Nimolee
3 years, 7 months ago
and B is wrong because if applied, access to IPv6 instances will be blocked
upvoted 2 times
...
jerac58653
3 years ago
Not correct, The NAT GW is still going to internet via the IGW. Default IPv6 route to the IGW is still needed. But they say to "'add it to the NAT", which I do not get...
upvoted 1 times
...
...
awspro2021
3 years, 8 months ago
B. Configure an egress-only internet gateway. - NAT is not supported for IPv6 traffic—use an egress-only internet gateway instead.
upvoted 4 times
...
Community vote distribution
A (35%)
C (25%)
B (20%)
Other
Most Voted
A voting comment increases the vote count for the chosen answer by one.

Upvoting a comment with a selected answer will also increase the vote count towards that answer by one. So if you see a comment that you already agree with, you can upvote it instead of posting a new comment.

SaveCancel