# So how many questions can you get wrong on the test before failing ?

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So how many questions can you get wrong on the test before failing it ? Just wondering..
Vendor Neutral Certified in IT Project Management, Security, Servers, Workstations, Software, Networking, Windows, Unix and Linux and.. Cloud. :-)

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GeeLo wrote: »
So how many questions can you get wrong on the test before failing it ? Just wondering..

Correct me if I am wrong, but the pass mark is set very high on the Security+ - 781 points or somewhere around there. Since CompTIA's questions have a different value for each question, it is hard to know how many you can get wrong. I recall reading that CompTIA throws about 10% extra questions on the exam that are considered "BETA" and are worth nothing. So, basically, if you get 10 questions wrong on this exam, you probably failed - that is just a rough guess.
From Security+ book by Sybex:
"One of the nice things about technology is that it's always changing. One of the bad things about technology is that it's always changing."
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You need 750 on a scale of 100-900, so I think it's a little less rigid than that. I believe that exam has the highest pass mark of any CompTIA exam though.
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It's almost impossible to determine, but here's my theory

Let's say the test has 90 questions totaling 800 points (on a scale from 100-900). Let's also say cryptography comprises 15% of the exam. I think they take 15% of the 800 points (120 points) and divide it among the cryptography questions. For example, on one test you have 3 cryptography questions, and those 3 questions equal 120 points. On another test, you have 20 cryptography questions, and those 20 questions equal 120 points total. Do you see where I'm going with this? I think the points are based on the number of questions from a domain relative to their percentage in the exam objectives.

So as you can see from my first example, if you miss those 3 out of 3 cryptography questions then you're screwed. But in the second example, if you miss 3 questions out of 20, then you're still in good shape. All in all, I think each question from a domain is weighted differently, which makes calculating the maximum number of wrong questions before failing impossible because each exam is different.

Of course, that's probably all BS, but it's something I was thinking about before I took this exam. Bottom line -- study hard and walk into the testing room with the eye of the tiger!
Usus magister est optimus
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apena7 wrote: »
It's almost impossible to determine, but here's my theory

Let's say the test has 90 questions totaling 800 points (on a scale from 100-900).

You get a 100 points for spelling your name right
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In layman's terms you need a 83 1/3% to pass, so by that you can miss 16 questions.

Obviously because each question isn't weighted the same it may be more or less. but 16 can give you a good rule of thumb, especially if you are equally good or bad in all the areas.
• A+,N+,S+,M+,C+,CySA+,CCT+ Member Posts: 112 ■■■■□□□□□□
abefroman wrote: »
In layman's terms you need a 83 1/3% to pass, so by that you can miss 16 questions.

Obviously because each question isn't weighted the same it may be more or less. but 16 can give you a good rule of thumb, especially if you are equally good or bad in all the areas.

Thanks.. well that makes me feel a bit better.. that's gives a person somewhat of a shot to pass the exam. Another question, Are you the Sausage King of Chicago ?
Vendor Neutral Certified in IT Project Management, Security, Servers, Workstations, Software, Networking, Windows, Unix and Linux and.. Cloud. :-)
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GeeLo wrote: »
Thanks.. well that makes me feel a bit better.. that's gives a person somewhat of a shot to pass the exam. Another question, Are you the Sausage King of Chicago ?

I am the one and only sausage king!
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abefroman wrote: »
I am the one and only sausage king!

I don't judge anyone's lifestyle choices. I am proud of you for being so open and secure to admit that.
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dynamik wrote: »
I don't judge anyone's lifestyle choices. I am proud of you for being so open and secure to admit that.

Lol, I take it your more of a bratwurst kinda guy then.