WONDER #1521: What Is a CAPTCHA?
Question 1 of 3
What does CAPTCHA stand for?
- Computers And People Tell Computers and Humans Apart
- Challenge Automated People Telling Computers and Humans Apart
- Completely Automated People Telling Computers and Humans Apart
- Completely Automated Public Turing test to tell Computers and Humans Apart
Question 2 of 3
During a typical day on the Internet, human beings solve more than how many CAPTCHAs?
- 3 million
- 300 million
- 3 trillion
Question 3 of 3
CAPTCHAs help to prevent unwanted interference from automated software applications, sometimes known as what?
Check your answers online at https://www.wonderopolis.org/wonder/what-is-a-captcha.