Mac OS X security guidelines recommend which of the following?

Disabling automatic login is a crucial security measure recommended by Mac OS X security guidelines. When automatic login is enabled, the system logs in a user account without requiring a password, which poses a significant security risk. If an unauthorized person has physical access to the computer, they can bypass the login screen and gain access to the user's data and applications without needing to know the password. By disabling automatic login, you ensure that all users must enter a password to access their accounts, thereby enhancing the overall security of the system.

In contrast to this, using weak passwords compromises account security, as it makes it easier for attackers to gain unauthorized access. Keeping guest accounts enabled can also pose a risk since anyone can use that account to access the system without proper authentication. Allowing all incoming connections without restrictions can expose the system to potential malicious attacks, as it makes the network environment less secure. Therefore, the recommendation to disable automatic login is a proactive step in safeguarding user information and maintaining the integrity of the system.