Question 119 of 585 from exam ANS-C01: AWS Certified Advanced Networking

Question 119 of 585 from exam ANS-C01: AWS Certified Advanced Networking - Specialty

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Question

You are trying to implement the below architecture. So you have a VPC peering connection between VPC A and VPC C and another one between VPC B and VPC C.You have Instances defined in each subnet, as shown above.

You need to ensure the following. · Instance i3 can communicate with Instance i1 but not Instance i2 · Instance i4 can communicate with Instance i2 but not Instance i1 What needs to be done so that this can accomplish? Choose 2 answers from the options given below.

VPC A- 10.0.0.0/16 VPC B- 10.0.0.0/16
Subnet - 10.0.1.0/24 Subnet - 10.0.1.0/24
Instance — i1 Instance — i2

VPC C- 20.0.0.0/16
Subnet - 20.0.1.0/24
Instance — i3,i4

Answers

A. Create 2 subnets in VPC C, ensure i3 and i4 are in different subnets.

B. Ensure different route tables are created to restrict access and added to the 2 different subnets.

C. Ensure that i3 and i4 are created in the same subnet.

D. Ensure that one route table is created which restricts access and added to the subnet.

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Explanations

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A. B. C. D.

Answer - A and B.

Since VPC A and VPC B have overlapping CIDRs, it will be difficult to restrict traffic if you have only one subnet.

Hence create two subnets with 2 different route tables will help meet the requirement.

Options C and D are incorrect since having one subnet will not help meet the requirement.

For more information on VPC peering, please refer to the below URL.

https://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/vpc-peering.html

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