exam questions

Exam ANS-C00 All Questions

View all questions & answers for the ANS-C00 exam

Exam ANS-C00 topic 1 question 287 discussion

Exam question from Amazon's ANS-C00
Question #: 287
Topic #: 1
[All ANS-C00 Questions]

Your VPC has a DX connection that is advertising 99 routes. You have two more prefixes to add: 10.223.1.0/24 and 10.223.2.0/24. You have several locations, so you need to be as exact as possible with your routing.
How would you do this?

  • A. Add the prefixes; AWS allows for as many BGP routes as you need but not static.
  • B. Contact AWS to extend the number of prefixes you are allowed to advertise.
  • C. Summarize the routes into a 10.223.0.0/22 and advertise that route instead.
  • D. Summarize the routes into a 10.223.0.0/12 and advertise that route instead.
Show Suggested Answer Hide Answer
Suggested Answer: C 🗳️
BGP has a strict 100 prefix limit. 10.223.0.0/12 includes both routes but is not very specific. 10.223.0.0/22 is the proper summarization of both routes.

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
eeghai7thioyaiR4
Highly Voted 3 years, 7 months ago
Ans: C There is a hard limit of 100 prefixes for private vif, as recalled Huntkey (https://docs.aws.amazon.com/directconnect/latest/UserGuide/limits.html)
upvoted 6 times
ChauPhan
3 years, 7 months ago
You have several locations, so you need to be as exact as possible with your routing. So C, D are not correct.
upvoted 1 times
jimycrimson16
3 years, 6 months ago
C is the more accurate of the options.
upvoted 2 times
...
...
...
ChauPhan
Most Recent 3 years, 7 months ago
B. Contact AWS to extend the number of prefixes you are allowed to advertise.
upvoted 1 times
ptpho
3 years, 6 months ago
{ From https://docs.aws.amazon.com/vpc/latest/userguide/amazon-vpc-limits.html - BGP advertised routes per route table (propagated routes) - 100 - This quota cannot be increased. If you require more than 100 prefixes, advertise a default route. }
upvoted 3 times
sapien45
3 years, 2 months ago
good catch C
upvoted 1 times
...
...
Huy
3 years, 6 months ago
Please review other member's comments before posting your comments. Also, express your idea behind your answer. Your commend make this dump a lot of garbages.
upvoted 9 times
sapien45
3 years, 2 months ago
I could not agree more
upvoted 2 times
...
...
...
Huntkey
3 years, 7 months ago
https://docs.aws.amazon.com/directconnect/latest/UserGuide/limits.html It is 100 for private vif and 1000 for pubic vif and they are hard limit.
upvoted 3 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
Loading ...
exam
Someone Bought Contributor Access for:
SY0-701
London, 1 minute ago