EBay buyers voluntarily comment to other users and sellers on the quality of service, promptness of shipping, and their general satisfaction with the product. This is one of the most popular examples of user-generated content and is called .
A) Explicit system
B) Knowledge system
C) Reputation system
D) User-generated sales cycle

The qwerty keyboard is the most common layout of keys on a keyboard

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Select the correct answer. andy received a potentially infected email that was advertising products. andy is at risk of which type of security threat? a. spoofing b. sniffing c. spamming d. phishing e. typo-squatting