Which of the following is not allowed regarding passwords?

The option indicating that all of the listed practices regarding passwords are not allowed is correct because it suggests that none of those practices would be appropriate. However, in many security protocols, some of these practices are actually permitted or even encouraged. For instance, writing down passwords in a secure location is generally acceptable if that location is adequately protected from unauthorized access. Sharing passwords with authorized personnel can be permissible under certain circumstances, especially when proper procedures are followed to ensure that both parties understand the importance of retaining confidentiality and integrity. Changing passwords regularly is typically recommended to enhance security, and many organizations have policies that endorse this recommendation.

In summary, the correct answer reflects a misunderstanding of acceptable practices surrounding password management. Each of the practices mentioned in the other options can actually be acceptable within the right context and with proper safeguards in place, depending on an organization’s security policy.