ITS Certiport Networking Practice Test

The key idea is controlled sharing of internal resources with external partners. An extranet does this by securely connecting parts of an organization’s private network to external entities—such as suppliers, customers, or partners—while enforcing authentication and access controls so each partner can only reach what they’re allowed to see. This enables collaboration and resource access across organizational boundaries without exposing internal systems to the entire Internet. In contrast, an intranet is strictly for internal use by employees, not external partners. The Internet is the global public network with no inherent restrictions on who can access resources, which isn’t suitable for controlled external access. A WAN describes the geographic scope of connecting distant sites, not the specific purpose of sharing internal resources with external partners under controlled access.