Taking into account the gateway for this subnet and the potential to add two more web servers, which of the following will meet the minimum IP requirement?

An organization will be deploying a web application in a public cloud with two web servers, two database servers, and a load balancer that is accessible over a single public IP.

Taking into account the gateway for this subnet and the potential to add two more web servers, which of the following will meet the minimum IP requirement?
A . 192.168.1.0/26
B . 192.168.1.0/27
C . 192.168.1.0/28
D . 192.168.1.0/29

View Answer

Answer: C

Explanation:

A /28 subnet is a subnet that has a network prefix of 28 bits and a host prefix of 4 bits. A /28 subnet can support up to 16 hosts (14 usable hosts) and has a subnet mask of 255.255.255.240. Using a /28 subnet can meet the minimum IP requirement for deploying a web application in a public cloud with two web servers, two database servers, and a load balancer that is accessible over a single public IP, taking into account the gateway for this subnet and the potential to add two more web servers.

Using a /28 subnet can provide enough host addresses for the current and future web servers, database servers, load balancer, and gateway, as well as allow for some growth or redundancy.

Reference: CompTIA Cloud+ Certification Exam Objectives, page 15, section 2.8