VPN authentication?

A+ Guide To It Technical Support
10th Edition
ISBN:9780357108291
Author:ANDREWS, Jean.
Publisher:ANDREWS, Jean.
Chapter9: Supporting Mobile Devices
Section: Chapter Questions
Problem 7TC
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Dear sir/madam

I need to solve these two questions:

 

1. What is VPN authentication? How does VPN authorization work?

 

2. What are some useful applications of a VPN? Are VPNs secure? Why?

 

Thank you

Babu

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