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TOPIC: RIP Question

Re: RIP Question 15 years 2 months ago #2318

Converting to hex for the CCNA (scratches head) I don't remember having to convert anything to hex. Anyway things might have changed.

The 16x table will help you because to convert to hex you will have to divide by 16. For example

Convert 65 (decimal) to hex

65 / 16 = 4, remainder 1, we can divide no further thus 65 dec = 41 hex

Heres another

Convert 255 (decimal) to hex

255 / 16 = 15 (F) remainder 240, we can divide further so we go on
240 / 16 = 15 (F) No remainder

Thus 255 dec = FF hex.

So you see, if you know your 16 times tables, you'll be able to divide a lot faster.
Sahir Hidayatullah.
Firewall.cx Staff - Associate Editor & Security Advisor
tftfotw.blogspot.com

Re: RIP Question 15 years 2 months ago #2320

  • tfs
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Sahirh is right.

It is a lot faster. You want to take about 5 or 10 minutes putting anything down you may need to remember (that I am sure you were looking at 10 seconds before you entered the room) so you don't have to fumble around trying to remember or figure out

The test is hard enough. Put down all calculations, tables, definitions you can that will help trigger your answers. This will take much of the stress of the test away.
Thanks,

Tom

Re: RIP Question 15 years 2 months ago #2321

Heres another tip for calculating your binary :

Write down

128 64 32 16 8 4 2 1

Now if I give you 11000000 to convert, you write it down below :

[code:1]

128 64 32 16 8 4 2 1
1 1 0 0 0 0 0 0

Now take all the '1's

128+64=192
So 11000000 in decimal is 192.
This is much more useful than the hex conversion, you'll need to calculate binary values more often.
[/code:1]

Also, you'll be sitting outside revising and then they'll tell you to go into the test room and start when you're ready. You aren't allowed to take anything in, but I suggest you go in, and write down everything you just revised. Then sit for a couple of minutes going over what you've written down.. maybe even do a sample calculation or something. Then you can start the actual test (they may even give you a sample test, just for you to get used to things).
Sahir Hidayatullah.
Firewall.cx Staff - Associate Editor & Security Advisor
tftfotw.blogspot.com

Re: RIP Question 15 years 2 months ago #2322

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A sample test????

You must be mistaken them for someone who cares. :lol:
Thanks,

Tom

Re: RIP Question 15 years 2 months ago #2323

  • indebluez
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thanx u guys:)

Re: RIP Question 15 years 2 months ago #2324

Anytime Indy !
Oi ! Since when have the forums displayed when moderators edit their posts !! Now you chaps will know that even we make mistakes.. well, at least tfs does ! ;)

the bitter rivalry continues !
Sahir Hidayatullah.
Firewall.cx Staff - Associate Editor & Security Advisor
tftfotw.blogspot.com
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