Part 3: Payment and Security 11. What is the most common payment gateway used in e-commerce? a) PayPal b) Stripe c) Square d) All of the above 12. Which protocol ensures the security of data over the internet? a)FTP b) HTTPS c) SMTP d) HTTP 13. What does PCl DSS stand for? a)Payment Card Industry Data Security Standard b) Payment Card Internet Data Security Standard c) Personal Card Industry Data Security Standard d) Payment Compliance Internet Data Security Standard 14. Two-factor authentication involves: a) A password and a security question b) Two passwords c) A password and a one-time code d) None of the above 15. Phishing attacks in e-commerce typically aim to: a) Boost sales b) Steal sensitive customer information c) Improve website performance d) Enhance user experience

11. **d) All of the above** While PayPal is arguably the most recognizable, Stripe, Square, and PayPal are all very common payment gateways used in e-commerce. The "best" choice often depends on the specific needs of the business.<br /><br />12. **b) HTTPS** HTTPS (Hypertext Transfer Protocol Secure) uses SSL/TLS encryption to protect data transmitted between a user's browser and a website.<br /><br />13. **a) Payment Card Industry Data Security Standard** PCI DSS is a set of security standards designed to ensure that all companies that accept, process, store or transmit credit card information maintain a secure environment.<br /><br />14. **c) A password and a one-time code** Two-factor authentication adds an extra layer of security by requiring two different types of authentication. This typically involves something the user *knows* (password) and something the user *has* (a code sent to their phone or email).<br /><br />15. **b) Steal sensitive customer information** Phishing attacks use deceptive emails or websites to trick users into revealing their login credentials, credit card details, and other sensitive information.<br />