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Exam ANS-C00 topic 1 question 65 discussion

Exam question from Amazon's ANS-C00

Question #: 65
Topic #: 1

Your company has a 1-Gbps AWS Direct Connect connection to AWS. Your company needs to send traffic from on-premises to a VPC owned by a partner company. The connectivity must have minimal latency at the lowest price.
Which of the following connectivity options should you choose?

A. Create a new Direct Connect connection, and set up a new circuit to connect to the partner VPC using a private virtual interface.
B. Create a new Direct Connect connection, and leverage the existing circuit to connect to the partner VPC.
C. Create a new private virtual interface, and leverage the existing connection to connect to the partner VPC.
D. Enable VPC peering and use your VPC as a transitive point to reach the partner VPC.

Show Suggested Answer

Suggested Answer: C 🗳️

by ohcan at April 28, 2019, 9:25 p.m.

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Comments

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ohcan

Highly Voted 3 years, 8 months ago

VPC peering is not transitive. D can't be correct. I suggest C

upvoted 16 times

clark

3 years, 8 months ago

Multiple VPC Peering Connections A VPC peering connection is a one to one relationship between two VPCs. If there was more than a "one to one" relationship, you would be correct. The answer is D.

upvoted 2 times

piotr

3 years, 8 months ago

Traffic is originated on-prem and VPC is not transitive over peering so D will not work. It would be valid only for traffic originated in that VPC.

upvoted 9 times

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ChauPhan

Highly Voted 3 years, 7 months ago

Hosted virtual interfaces To use your AWS Direct Connect connection with another account, you can create a hosted virtual interface for that account. The owner of the other account must accept the hosted virtual interface to begin using it. A hosted virtual interface works the same as a standard virtual interface and can connect to public resources or a VPC.

upvoted 5 times

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squeeze_talus0y

Most Recent 2 years, 8 months ago

Between A and C I would go with A, since a DXGW is free. Option C implies additional site-to-site VPN connection costs, while with DX we already pay the port hours for us-west-2.

upvoted 1 times

squeeze_talus0y

2 years, 8 months ago

Wrong question to comment.

upvoted 1 times

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Marty2021

2 years, 11 months ago

Selected Answer: C

A and B involved a new DX at considerable cost. D isn't correct as VPC peering doesn't allow transitive routing, this only leaves C

upvoted 2 times

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MohamedSherif1

3 years ago

C. Create a new private virtual interface, and leverage the existing connection to connect to the partner VPC.

upvoted 1 times

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shammous

3 years, 5 months ago

Selected Answer: C

lowest possible cost: answers A and B would be ruled out because of that, as C is the cheapest. D is wrong as VPC peering is not transitive.

upvoted 3 times

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mabalon

3 years, 6 months ago

Selected Answer: C

No doubt

upvoted 1 times

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viestner

3 years, 6 months ago

C. https://docs.aws.amazon.com/directconnect/latest/UserGuide/WorkingWithVirtualInterfaces.html

upvoted 1 times

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Kentik

3 years, 7 months ago

Cant believe they are companies out there selling this with so many wrong answers

upvoted 4 times

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Johnny_Green

3 years, 7 months ago

Answer is C. In spirit, this question is similar to Question #51 in which an on-premises site needs to communicate with more than one VPC. The only difference is the partner VPC vs. own VPC.

upvoted 2 times

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kvirk

3 years, 7 months ago

C for sure

upvoted 4 times

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Puma4843

3 years, 7 months ago

Yes. You can hosted VIF for another account. It is C

upvoted 3 times

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BillyC

3 years, 7 months ago

C.. Off Course

upvoted 4 times

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Meetra

3 years, 7 months ago

C . vpc is non transitive

upvoted 3 times

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tonna86

3 years, 7 months ago

I think it is C which should be possible via Hosted VIFs (https://docs.aws.amazon.com/directconnect/latest/UserGuide/WorkingWithVirtualInterfaces.html) A and B will be too expensive, and D is not possible since transitive routing is not supported for VPC peering.

upvoted 4 times

topcat

3 years, 7 months ago

C: https://docs.aws.amazon.com/vpc/latest/peering/create-vpc-peering-connection.html#create-vpc-peering-connection-remote its the cheapest

upvoted 2 times

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aviz

3 years, 8 months ago

I think answer is C as well,as garrett we cannot extend the flow using peering

upvoted 3 times

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Garrett

3 years, 8 months ago

https://docs.aws.amazon.com/vpc/latest/peering/invalid-peering-configurations.html#transitive-peering Edge to Edge Routing Through a Gateway or Private Connection If either VPC in a peering relationship has one of the following connections, you cannot extend the peering relationship to that connection:

upvoted 1 times

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