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I am doing a project for Cybersecurity and trying to build a college campus network. The complete instructions read:

LAN infrastructure layouts for all campuses.

• Represent multiple building/classroom PCs with two icons showing first and last IP subnet addresses.

• Basic functional configurations for PCs, servers, switches, and routers.

• PCs – must have IPv4 addressing configured (static).

• Servers – must have IPv4 addressing configured (static).

• Switches – must have IPv4 addressing and login security.

• Routers – must have IPv4 addressing, login security, and functional routing table (static).

• IPv4 subnetted class C address scheme.

• Use 172.16.0.0 private addressing

• Third octet should be used for subnetting required to support network design criteria.

• WAN connections between campuses (static).

• Ability to ping and traceroute within and between campuses.

There are 3 branch college campuses and 1 main campus. Wouldn't that be a contradiction as the range of Class C addresses are from 192-223 which 172.16.0.0 doesn't fall under or am I not understanding enough about the project?

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    You're being too literal. When they say "class C" they mean "/24". Classful networking has been dead for decades. (you're right to call out your instructor(s) for this.)
    – Ricky
    Apr 3 at 4:05
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That's sloppy writing in the instructions, but I'm pretty sure it means you should use /24 networks (i.e. 172.16.0.0/24, 172.16.1.0/24, 172.16.2.0/24, etc). It would've been better to say to use class-C-sized networks, but even that's obsolete terminology since network classes haven't been a thing since 1993.

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