Final answer:
Password strength is determined by the complexity and length of a password, as well as the character set used.
Step-by-step explanation:
Password strength is an important aspect of computer security. It is determined by the complexity and length of a password, as well as the character set used. A stronger password utilizes a variety of characters such as uppercase and lowercase letters, numbers, and symbols. For example, a password like 'P#ssw0rd' is stronger than 'password' because it includes uppercase letters, lowercase letters, numbers, and a symbol.