[CCCure CISSP] Access Control - Brute Force Attack

[Ali Jawad]

Hi
Actually it is exponential

I.e.

first you have to try 0 as a fixed number and then the rest are variables
..etc then 01 as fixed and the rest are variables...I dont know the exact
formula but I am sure you can google it

Regards

On Sun, Feb 14, 2010 at 8:05 PM, Nimal Gunarathna <ng949 at yahoo.com> wrote:

>  Hello Everyone, I have a question for you all?
>
> 1. If the password is made up of 4 numeric characters, how many attempts
>     needed for a successful brute force attack?
>
> A. 10000
> B. 11110
> C. 1024
> D. 11100
>
> *What I think: *
> Every numeric character has 10 choices. Then 4 characters 10^4 = 10000
> choices and
> the answer should be A.  But the right answer is B. How is that possible?
>
>
>
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