ITPEC FE Morning April 2018 Question 36
ITPEC FE Morning April 2018 — Question 36 of 80
CAPTCHA — a challenge-response test that distinguishes humans from bots.
Requires users to interpret warped text or partially hidden images — tasks easy for humans but difficult for automated programs.
Why not others:
- (b) QR code — encodes data into a 2D barcode for scanning
- (c) Short URL — redirects a shortened link to the original URL
- (d) Trackback ping — notifies a blog that another site has linked to it
Key rule: CAPTCHA = "Completely Automated Public Turing test to tell Computers and Humans Apart."
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