Question

which protocol is best when establishing a pin lock?
use four digits that are consecutive and do not repeat
use at least two numbers that are not consecutive
use four digits that repeat
use four digits that do not repeat and are not consecutive

Explanation:

When creating a PIN lock, using four digits that do not repeat and are not consecutive increases security. Consecutive digits (e.g., 1234) or repeated digits (e.g., 1111) are easier to guess. Using non - consecutive and non - repeating digits (e.g., 1357) provides a larger number of possible combinations, making it harder for unauthorized access.

Answer:

Use four digits that do not repeat and are not consecutive.