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?
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A. B. C. D. E. F.B.
The requirements listed in the question are:
To meet these requirements, the cloud architect needs to design VPCs (virtual private clouds) in different regions. VPCs provide a virtual network environment that closely resembles a traditional network infrastructure, allowing you to securely and seamlessly connect to cloud resources.
To determine the best solution, we need to consider the following:
High Availability: High availability ensures that the cloud resources are always available and accessible to users. To achieve high availability, we need to create redundant resources across multiple availability zones (AZs) within a region.
Horizontal Auto-scaling: Horizontal auto-scaling enables the cloud resources to automatically scale up or down to meet the demand. Horizontal scaling allows us to add or remove identical instances of resources, such as servers or containers, to match the traffic.
60 nodes peak capacity per region: The VPC should be able to accommodate at least 60 nodes at peak capacity per region.
Five reserved network IP addresses per subnet: Each subnet must have a reserved network IP address for the VPC router and at least four more IP addresses for future use.
/24 range: The VPC must have a range of IP addresses with a subnet mask of /24.
Based on these requirements, we can eliminate options E and F as they do not provide enough IP addresses to meet the requirement of at least 60 nodes per region. Option D is also not suitable as it creates three /26 subnets which do not provide enough IP addresses to accommodate the required number of nodes.
Option A creates two /25 subnets in different regions. This option provides a sufficient number of IP addresses to meet the requirement of at least 60 nodes per region. However, it does not provide enough reserved IP addresses per subnet as each subnet would only have 123 usable IP addresses.
Option B creates three /25 subnets in different regions. This option also provides enough IP addresses to meet the requirement of at least 60 nodes per region, while also allowing for more reserved IP addresses per subnet than option A. Each subnet would have 251 usable IP addresses, which is more than enough to accommodate the required number of nodes.
Therefore, the BEST option that meets all the requirements listed in the question is option B - Create three /25 subnets in different regions.