Questions 61 to 63

Explanations for questions 61 to 63

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Question 61

A solutions architect has created a VPC and is in the process of formulating the subnet design. The VPC will be used to host a two-tier application that will include Internet-facing web servers and internal-only DB servers. Zonal redundancy is required.

How many subnets are required to support this requirement?

  1. 2
  2. 6
  3. 1
  4. 4

Correct Answer: 4

Explanation: Zonal redundancy indicates that the architecture should be split across multiple Availability Zones. Subnets are mapped 1:1 to AZs.

A public subnet should be used for the Internet-facing web servers, and a separate private subnet should be used for the internal-only DB servers. Therefore, you need 4 subnets — 2 (for redundancy) per public/private subnet.

INCORRECT: “2” is incorrect as explained above.

INCORRECT: “6” is incorrect as explained above.

INCORRECT: “1” is incorrect as explained above.

CORRECT: “4” is the correct answer.

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