Question

When logging into an information system, you are instructed to enter a string of characters. These characters appear distorted onscreen, however. What kind of access control is this?

a. CAPTCHA
b. biometrics
c. two-factor authentication
d. token

Answer 1

A distorted string of characters when logging into an information system is known as a CAPTCHA, designed to differentiate between human users and automated software.

Step-by-step explanation:

When you are instructed to enter a string of characters that appear distorted onscreen, you are encountering a kind of access control known as a CAPTCHA. CAPTCHA stands for Completely Automated Public Turing test to tell Computers and Humans Apart. It is a test that is used to ensure that the response is generated by a human, rather than a computer program. This is often used to prevent bots from accessing web-based services, automated form submissions, and more. CAPTCHA typically involves distorted letters and numbers that humans can decipher but present challenges for automated software.