In which situation is private IPv4 addressing appropriate for a new subnet on the network of an organization?
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A. B. C. D.C.
Private IPv4 addresses are used within an organization's internal network and are not routable on the public Internet. In contrast, public IPv4 addresses are globally unique and used to identify devices on the Internet.
Therefore, private IPv4 addressing is appropriate in situations where traffic will stay within the organization's network and does not need to be accessible from the Internet. In this case, option C is correct - there is limited unique address space, and traffic on the new subnet will stay local within the organization.
Using private IPv4 addresses can also help to limit the number of broadcasts on a network, which is mentioned in option A. Broadcasts can cause congestion on a network, so limiting their number can help to improve network performance.
Option B is not correct because if the subnet needs to be advertised to the Internet for web services, public IPv4 addresses must be used.
Option D is also not correct because if traffic on the subnet must traverse a site-to-site VPN to an outside organization, public IP addresses are required so that the outside organization can route traffic to the correct internal IP addresses.