Brew Nerds – coffee for smart people

Happy New Year!

Here is today’s question:

I ran arp -a on a Windows machine and received this:

192.168.0.1             00-17-c5-4a-02-e6     dynamic
192.168.0.47            00-18-8b-4d-12-e1     dynamic
192.168.0.49            00-26-b9-38-2b-b0     dynamic
192.168.0.52            00-01-74-d1-6b-07     dynamic
192.168.0.53            00-06-72-c9-d7-e1     dynamic
192.168.0.111           00-AA-71-f8-b6-87     dynamic
192.168.0.161           00-21-91-57-1f-41     dynamic
192.168.0.200           00-03-ff-29-9a-19     dynamic
192.168.0.201           00-03-fa-28-97-08     dynamic

Five minutes later, I ran the command and received this:

192.168.0.1             00-18-8b-4d-12-e1     dynamic
192.168.0.47            00-18-8b-4d-12-e1     dynamic
192.168.0.49            00-26-b9-38-2b-b0     dynamic
192.168.0.52            00-01-74-d1-6b-07     dynamic
192.168.0.53            00-06-72-c9-d7-e1     dynamic
192.168.0.111           00-AA-71-f8-b6-87     dynamic
192.168.0.161           00-21-91-57-1f-41     dynamic
192.168.0.200           00-03-ff-29-9a-19     dynamic
192.168.0.201           00-03-fa-28-97-08     dynamic

Assuming I’m paranoid and this isn’t normal, what will I most likely deduce is happening??

Assumptions:

• My default gateway is 192.168.0.1.
• No hardware changes were made between the first and second requests.

As always, tell a nerd working behind the counter the correct answer and receive a free 450mL beverage.

Tags: fcfsmt

This entry was posted on Tuesday, January 26th, 2010 at 1:30 pm and is filed under tuesday trivia. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.