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A cloud architect is reviewing the design for a new cloud-based ERP solution. The solution consists of eight servers with a single network interface. The allocated IP range is 172.16.0.0/28. One of the requirements of the solution is that it must be able to handle the potential addition of 16 new servers to the environment. Because of the complexity of the firewall and related ACL requirements, these new servers will need to be in the same network range. Which of the following changes would allow for the potential server addition?
Correct Answer: C
Changing the subnet mask to use a 255.255.255.128 range would allow for the potential server addition. The current subnet mask of 255.255.255.240 (/28) only allows for 14 usable host addresses in the 172.16.0.0 network, which is not enough to accommodate the existing eight servers and the possible 16 new servers. Changing the subnet mask to 255.255.255.128 (/25) would increase the number of usable host addresses to 126 in the same network, which is sufficient to handle the server expansion. Changing the IP address range to use a 10.0.0.0 address, changing the server template to add network interfaces, or changing the server scaling configuration to increase the maximum limit would not solve the issue of the limited host addresses in the same network range. Reference: CompTIA Cloud+ CV0-003 Certification Study Guide, Chapter 3, Objective 3.1: Given a scenario, implement cloud networking solutions.