I am trying to find an answer for the following question
"What is the default amount of time that an entry remains in your ARP cache before being removed. You can determine this empirically (by monitoring the cache contents) or by looking this up in your operation system documentation. Indicate how/where you determined this value." But I want to know how I can find it myself on a OS X (Macbook). What is the process I am supposed to go through, what commands am I supposed to use in terminal?