Creating a Custom VPC with a Single Subnet
Question
You need to create a custom VPC with a single subnet.
The subnet's range must be as large as possible.
Which range should you use?
Answers
Explanations
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A. B. C. D.A.
When creating a custom Virtual Private Cloud (VPC) on a cloud platform like Google Cloud or AWS, you need to choose an IP address range that your resources within the VPC will use. This range is represented by a CIDR block (Classless Inter-Domain Routing) and determines the number of IP addresses that can be assigned to your resources.
The CIDR block is a combination of an IP address and a subnet mask. The subnet mask is represented by a number that indicates the number of bits in the IP address that represent the network portion of the address. The remaining bits are used for the host portion of the address.
In this scenario, the requirement is to create a VPC with a single subnet and the subnet's range should be as large as possible. So, we need to choose a CIDR block that allows for a large number of IP addresses.
Option A (0.0.0.0/0) represents the entire IPv4 address space and is not a valid option for creating a VPC subnet range.
Option B (10.0.0.0/8) represents a private IP address range and allows for a large number of IP addresses (over 16 million). This option is a good choice for creating a VPC with a single subnet, as it provides ample IP addresses and is reserved for private use.
Option C (172.16.0.0/12) also represents a private IP address range and allows for fewer IP addresses than option B (over 1 million). While this option can still provide enough IP addresses for a single subnet, it may not be the best choice if you need to create additional subnets in the future.
Option D (192.168.0.0/16) is another private IP address range that allows for a large number of IP addresses (over 65,000). However, it may not provide enough IP addresses if you need to create additional subnets in the future.
Therefore, the best option for creating a custom VPC with a single subnet and the subnet's range as large as possible is option B (10.0.0.0/8).
