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Java Certified Enterprise Architect (SCEA)

Page 19 of 21

Question 19:

You are working for a company with a worldwide presence; its offices are spread across many countries and over many computer networks. The company has set up Virtual private networks to increase security. What are Virtual Private Networks (VPNs) and where are they created?

 

A network created between two other networks (these are not located in the same place, geographically). Encryption and Authentication are used in the VPN. Normally the VPN is a network on top of an un-trusted network (like the Internet).

The area between two firewalls. You let traffic from the Internet into this area (through the first firewall) but not through the second firewall (to your secure network).

The secure (inner) network as behind the second firewall as described above.

A network created between two other networks (these are not located in the same place, geographically.) Encryption and Authentication are NOT used in the VPN. Normally the VPN is a network on top of a trusted network (like the Internet).