Emma notices that when she visits her bank's website, there's a padlock symbol in the browser's address bar. This symbol indicates that her connection to the bank's website is using which protocol?
- FTP
- HTTP
- HTTPS
- SMTP
The padlock symbol in the browser's address bar indicates that the connection is using HTTPS (Hypertext Transfer Protocol Secure). This protocol provides secure communication over the internet, encrypting data transmitted between the user's browser and the website's server. It's commonly used for online banking and other secure transactions.
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