1.

What is CAPTCHA?

Answer»

CAPTCHA stands for COMPLETELY AUTOMATED Public Turing Test to tell Computers and Humans Apart. It is a type of security measure and is also KNOWN as challenge-response authentication.

The primary goal of the CAPTCHA is to protect you from spam or denial-of-service attacks by bots/scripts by asking you to complete a simple test that is difficult for computers to follow. It proves you are human and not a COMPUTER.

A CAPTCHA challenge consists of two parts:

  • A randomly generated sequence of letters/numbers. These alphanumeric characters appear as distorted images and might appear behind other non-significant characters to make it difficult for a computer to parse them. 
  • A TEXT box where the user is supposed to copy the characters. To pass the test and prove that they are human, the user types the characters in the text box.


Discussion

No Comment Found

Related InterviewSolutions