Good exam day charts/tips?

yanks4everontop

I've got my ICND1 test tomorrow and was wondering what some who have taken the test already have used to write down during the few minutes before the actual test begins. All I can think of is the powers of 2 but is there anything else useful? Examples would be great. Also any other tips that are helpful for the exam would be much appreciated. Thanks.

amp2030

Good luck mate! I'll be taking it on Wednesday; other than powers of 2 I'll probably write down subnet mask octets (128, 192, etc) so I don't have to think through them every time.

rwwest7

You'll need this:

128 1 0 0 0 0 0 0 0 128
192 1 1 0 0 0 0 0 0 64
224 1 1 1 0 0 0 0 0 32
240 1 1 1 1 0 0 0 0 16
248 1 1 1 1 1 0 0 0 8
252 1 1 1 1 1 1 0 0 4
254 1 1 1 1 1 1 1 0 2
255 1 1 1 1 1 1 1 1 1

The left side is subnet masks, the right side is the "interesting bit" (if that's how you subnet). If your mask is /27, then you look at the row with 3 1's....so your mask is 255.255.255.224 and your increment is 32.