What is a property of the ARP table on a device?

A property of the ARP (Address Resolution Protocol) table on a device is:

Entries in an ARP table are time-stamped and are purged after the timeout expires.

The ARP table, also known as the ARP cache, maintains a mapping of IP addresses to MAC addresses. When an IP address needs to be resolved to a MAC address, ARP is used. Once the MAC address is discovered, it is stored in the ARP table for a certain period. These entries are time-stamped, and after the timeout (which varies depending on the operating system and its configuration), if not used, they are purged to make space for new entries and to ensure that changes in the network topology are respected.

The other statements are incorrect or not universally applicable:

• Every operating system uses the same timer to remove old entries from the ARP cache: This is incorrect. Different operating systems have different default timers for ARP entry expiration, and these can often be adjusted by an administrator.
• Static IP-to-MAC address entries are removed dynamically from the ARP table: This is incorrect. Static entries are manually added to the ARP table to prevent them from expiring and are not purged automatically. They remain in the ARP table until manually removed or until the device is rebooted.
• Windows operating systems store ARP cache entries for 3 minutes: This statement is not entirely accurate. The timeout for ARP cache entries in Windows can vary, and the typical default ARP cache entry life is 2 minutes for stale entries and 10 minutes for unresolved entries, but this can be changed via registry settings or system policies.