1. If you follow the news, you know that large companies often have major data breaches. In this unit, you learned about ways to make networks more secure, including firewalls, encryption, and user authentication. Brainstorm new ways that companies can make their customers’ data more secure that builds on these ideas. 2. In the past, our telephone systems were networked in their own way, separate from the internet, but now, there are many apps that allow you to make audio or video calls over the internet. All you need is a wifi connection! Have you used or observed someone use Skype, Google Voice, Viber, Facebook Messenger, or Whatsapp to make a call? What are some of the differences you have noticed using this type of call, called VOIP, or Voice Over IP, instead of a cellular service? Do you have a preference for cellular vs. VOIP calls?

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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1. If you follow the news, you know that large companies often have major data breaches. In this unit, you learned about ways to make networks more secure, including firewalls, encryption, and user authentication. Brainstorm new ways that companies can make their customers’ data more secure that builds on these ideas. 2. In the past, our telephone systems were networked in their own way, separate from the internet, but now, there are many apps that allow you to make audio or video calls over the internet. All you need is a wifi connection! Have you used or observed someone use Skype, Google Voice, Viber, Facebook Messenger, or Whatsapp to make a call? What are some of the differences you have noticed using this type of call, called VOIP, or Voice Over IP, instead of a cellular service? Do you have a preference for cellular vs. VOIP calls?
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