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bjscharf
Newcomer I
Tuesday
Tuesday

CSSLP Official ISC2 Textbook, 6th Edition online has errors?

I am going through the book online and worried that I can't understand multiple answers for the first quiz.  Can somebody explain:

 

13. A banking website requires a PIN that is exactly eight digits in length and contains only numbers. What is the possible number of PINs for the banking website? (D1.2, L1.7)

is the answer not 10^8 or 100,000,000

 

Also #16 seems to have a legit glitch

bjscharf_0-1764701013851.png

 

I hope I am not crazy.  Can somebody help me understand or point me how to report this if they are errors?

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dcontesti
Community Champion
Tuesday
Tuesday

I would have said that 10^8 (or 100 Million) would be the correct answer.

 

On the second question, I do not believe that C would be the correct answer.

 

I suggest that you submit an errata on these two items.  Maybe @CBMExamTeam would be kind enough to provide the details.

 

Regards

 

d

 

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CBMExamTeam
ISC2 Team
ISC2 Team
Tuesday
Tuesday

@bjscharf @dcontesti 

Thank you for reaching out via ISC2 Community.

I've done some research.  You may report Official ISC2 Courseware and eTextbook "errata" here:

Content Error Submission

 

And just for giggles, (I'm no math whiz, for sure), but if you have ten numerical characters (0 - 9) and you can only have eight characters, wouldn't that be 8^10, or 1073741824?

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bjscharf
Newcomer I
Tuesday
Tuesday

@CBMExamTeam and @dcontesti Thank you both.  I am no math wiz either, but the online book said it was "80."  Yes, 80.  Can you imagine how fast a bank with only 80 different PIN possibilities would be hacked?  🙂  

bjscharf_0-1764729890718.png

When one is just starting the material and 2 of 13 questions are so off, it makes one question his sanity.  I appreciate the sanity check and will report this.

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dcontesti
Community Champion
Wednesday
Wednesday

@bjscharf and @CBMExamTeam

 

I also am not a math genius but the way I understand it is.  Using only the numbers 0 to 9 (ten) for an 8 (eight) character password would be calculated similar to this:

 

For each of the 8 characters you may choose one (1) character from the potential set, so  you have a 1 (one) in 10 (ten) choice.

 

So the math would be 10*10*10*10*10*10*10*10  OR 100Million OR 10 raised to the eighth power.

 

There is no way any of the answers shown in the question are even remotely correct.........OM, I just realized whoever wrote the question is also not mathematically inclined as they have OVER simplified the MATH.....

 

Any others??????

 

 

d

 

 

 

 

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