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Unformatted text preview: The most common tunneling protocols used by VPNs are the Point-to-Point Tunneling Protocol (PPTP), the Layer 2 Tunneling Protocol (L2TP) and IP Security (IPsec). 4. Describe a differential backup. (Minimum word count: 35) A differential backup is used in conjunction with a full back up. A differential backup copies all of the data that was changed since the last full back up. The size of a differential backup becomes larger until the next full back up is complete. 5. What is authentication? (Minimum word count: 50) Authentication is the process of verifying an individual’s identity if the user logs onto a system or network. An example is when you have to enter a user name and password to access a network, computer or wireless internet. If the user is unable to give this information they are denied access to whatever it was that they were trying to access. 6. Match each term below with the correct definition. Answer: 1 – D 2 - E 3 - A 4 - C 5 - B...
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- Summer '11
- Virtual private network, VPNs, minimum word count