Final answer:
The two best examples of physical security from the options provided are an RSA token, a device providing unique authentication codes, and a privacy filter, which protects on-screen data from sideway glances. Directory permissions and the principle of least privilege are administrative security measures.
Step-by-step explanation:
The two best examples of physical security from the options provided are:
RSA tokens are small devices that generate a unique code at fixed intervals, used to support strong authentication and ensure that only authorized individuals can access a system or network physically or remotely. A privacy filter, on the other hand, is a physical layer that one can place over a display to prevent unauthorized viewing from sideways angles, thus protecting sensitive information displayed on the screen.
In contrast, directory permissions and the principle of least privilege are types of logical or administrative security measures. Directory permissions control the access to files and directories, and the principle of least privilege means giving a user account only those privileges which are essential to perform its intended function.