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xetrev
Member Posts: 59 ■■□□□□□□□□
in CCNA & CCENT
Is hex on the ccna? if so anyone have a good tuturial on converting binary to hex and vice versa?
Comments

Optionsfusebox Member Posts: 87 ■■□□□□□□□□Well basically, if you have an 8 bit binary number, you split it into two nibbles (4bits). Then convert those four bits into the Hex number.
eg: Hex goes as follows;
0000  0
0001  1
0010  2
0011  3
0100 4
0101 5
0110 6
0111 7
1000 8
1001 9
1010 A
1011 B
1100 C
1101 D
1110 E
1111 F
now supposing you had a the following 8bit binary number;
10110011.... So split this into two... you get 1011 & 0011 now from the above, this equals B & 3 Therefore the equivalent Hex no. is B3
Does that help.?Im a newbie.... please be easy on me. 
Optionsxetrev Member Posts: 59 ■■□□□□□□□□yah thats cake, 20x easier then i thought.
so 10101010 would be 170
split that into 1010 and 1010
which = AA? 
OptionsRicka182 Member Posts: 3,359That is mad easy to remember...cool.i remain, he who remains to be....

Optionsfusebox Member Posts: 87 ■■□□□□□□□□yep... thats pretty much it.Im a newbie.... please be easy on me.

Optionsxetrev Member Posts: 59 ■■□□□□□□□□thanks i am taking the exam thursday and while i was cramming i forgot that i did not know how to do the hex converstions. they are simple!

OptionsFu Loser Member Posts: 123Heres how I remember Hex.
take four bits and create list of binary 015
then take numbers 1015.
A=10
B=11
C=12
D=13
E=14
F=15
When you take your exam and you are writing everything you can remember on your white sheet before the test. The last 2 things (that I think) you should write out is a good complete IP table and then Hex down a side of the paper.
A complete IP and Hex table will save you time and help prevent dumb math errors that you may make during your test ( assuming ou make the tables correct )
ADDED:
go from Hex to decimal using this formula.
(16*x)+z
x = First Hex character
y = Second Hex Character
example. FA
(16*15)+10 = 250
example. BD
(16*11)+13 = 189