Pearson Edexcel GCSE Computer Science (1CP2)Specification point 6.4.4

Edexcel 1CP2 6.4.4: Authentication

The free BugBot lessons that teach this point, a robot to try it on, and the past-paper questions that test it.

Lessons that teach it

1. F6.2 Authentication Robust programs
   Usernames and passwords, limiting attempts, and stronger ways to prove who someone is.
2. F11.5 Passwords and authentication Cyber security
   Ways to authenticate, strong passwords, 2FA, CAPTCHA and hashing.

Try it on a robot

The task from F6.2 Authentication, running here. Change the program and press Run.

Past paper questions on this

Real exam questions that test this, each worked through with a program you can run.

• AQA 8525 June 2024 Paper 1, Question 11: Authenticate against two username and password pairs until valid 7 marks
• AQA 8525 June 2023 Paper 1, Question 6: Fill the gaps in a login routine 4 marks
• Edexcel 1CP2 June 2023 Paper 2, Question 6: Authenticate against a 2D array with three outcomes 15 marks
• Edexcel 1CP2 Sample Paper 2, Question 6: A login search of a sorted 2D list with passcode validation and an early stop 15 marks

The specification is Edexcel's own document; this page says which of our lessons teach point 6.4.4 and is not endorsed by the board.