NCTI Introduction To Networking – Wireless Practice Test

Private IPv4 addresses are reserved for use inside local networks and are not routable on the public Internet. They let LANs assign addresses without consuming public space, often behind a NAT device that translates to a public address when accessing the Internet. The standard private blocks are 10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16. Together they cover large, commonly used address ranges for internal networks: - 10.0.0.0/8 spans from 10.0.0.0 to 10.255.255.255 - 172.16.0.0/12 spans from 172.16.0.0 to 172.31.255.255 - 192.168.0.0/16 spans from 192.168.0.0 to 192.168.255.255 The best option lists all three canonical private blocks, which is why it’s the correct choice. Other options either include a non-private range (such as 172.32.0.0/12) or specify only a subset of a private block (like 192.168.1.0/24) rather than the full private ranges used in LANs.