Which of the following types of VPN uses the Internet as its main backbone, allowing users, customers, and branch offices to access corporate network resources across various network architectures?

Question

Options

• APPTP VPN
• BRemote access VPN
• CExtranet-based VPN
• DIntranet-based VPN

• A
  4% (1)
• C
  93% (26)
• D
  4% (1)

Explanation

Extranet-based VPNs are specifically designed to extend corporate network access to external parties - including customers, partners, and branch offices - using the Internet as the transport backbone, accommodating diverse network architectures in the process. The word "customers" in the question is the key discriminator, since customers are external to the organization, which is the defining characteristic of an extranet.

Why the distractors are wrong:

• A (PPTP VPN): PPTP is a protocol, not a VPN deployment category - it describes how data is tunneled, not who gets access or what network topology is used.
• B (Remote access VPN): Remote access VPNs serve individual end-users dialing in from remote locations, not a broader architecture connecting organizations and customers.
• D (Intranet-based VPN): Intranet VPNs connect internal branch offices within the same company - no external parties involved.

Memory tip: Use the prefix - "Intra" means within (internal staff/branches only), "Extra" means extending outward (external customers and partners join in). If the scenario includes outsiders, it's an extranet.

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