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CompTIA

CV0-003 · Question #492

A cloud architect is designing the VPCs for a new hybrid cloud deployment. The business requires the following: - High availability - Horizontal auto-scaling - 60 nodes peak capacity per region…

The correct answer is A. Create two /25 subnets in different regions. HA is guaranteed through the horizontal scaling, allowing different subnets in different regions. With 60 nodes (IP addresses), you can count out the /26 (64 available IPs, when you need 5 IPs in reserve) and /27 (32 available IPs aren’t enough). And finally, it is physically…

Cloud Architecture and Design

Question

A cloud architect is designing the VPCs for a new hybrid cloud deployment. The business requires the following:

  • High availability
  • Horizontal auto-scaling
  • 60 nodes peak capacity per region
  • Five reserved network IP addresses per subnet
  • /24 range

Which of the following would BEST meet the above requirements?

Options

  • ACreate two /25 subnets in different regions
  • BCreate three /25 subnets in different regions
  • CCreate two /26 subnets in different regions
  • DCreate three /26 subnets in different regions
  • ECreate two /27 subnets in different regions
  • FCreate three /27 subnets in different regions

How the community answered

(58 responses)
  • A
    62% (36)
  • B
    19% (11)
  • C
    5% (3)
  • D
    2% (1)
  • E
    2% (1)
  • F
    10% (6)

Explanation

HA is guaranteed through the horizontal scaling, allowing different subnets in different regions. With 60 nodes (IP addresses), you can count out the /26 (64 available IPs, when you need 5 IPs in reserve) and /27 (32 available IPs aren’t enough). And finally, it is physically impossible to create three /25 subnets due to IPs multiplying/dividing in increments of 2 (i.e., /25 = 128 and /24

Topics

#VPC design#subnet sizing#IP addressing#high availability

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