Information Security Officer Interview Question:

Tell me what port does ping work over?

Submitted by: Muhammad

A trick question, to be sure, but an important one. If he starts throwing out port numbers you may want to immediately move to the next candidate. Hint: ICMP is a layer 3 protocol (it doesn't work over a port) A good variation of this question is to ask whether ping uses TCP or UDP. An answer of either is a fail, as those are layer 4 protocols.
Submitted by: Muhammad