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Solaris 10 exam question

Please refer to the attach. Why C is not the part of the correct answer??A and C is the same , you assign read permission to the group.

Thanks.
abe.JPG
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binary_1001010
Asked:
binary_1001010
4 Solutions
 
omarfaridCommented:
I am not sure if I should answer an exam question, but the C option gives every member of group read perm
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binary_1001010Author Commented:
so does A.
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TintinCommented:
The answers should be

A C E
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omarfaridCommented:
I think answer should be A C ; E: and not sure how with file perms r-------- and owner test1 , root can read file (I know it is full priv account, but I think root may get perm denied).
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TintinCommented:
omarfarid, I'm surprised that you wouldn't know that root can read files owned by non-root users with 400 permission.
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omarfaridCommented:
Thank you , but I never tried it before :)
Now I tried it and you are correct, root can read files with 400 perms
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TintinCommented:
That's one of the reasons why the root user can be so dangerous.  It essentially has full permissions over every file on the system.
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omarfaridCommented:
It is a dangerous account by all means :)
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arthurjbCommented:
With the information given, it is not clear that B would give user test1 read access to the file.

Unless somewhere else you are given the information that user test1 is a member of the group sys then B is not a correct answer.
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omarfaridCommented:
I agree with arthurjb that B with given info is not correct.
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omarfaridCommented:
I agree with arthurjb that B with given info is not correct.
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docbertCommented:
The correct answer is definitely A, C and E.

I was one of the authors of the Solaris 10 Certification Exams, so I can assure you that's correct :)

As for the first comment (regarding giving the whole group access) the question doesn't specifically say that you can't do that, so it's still right.  The answer(s) you're looking for aren't necessarily those that provide _exactly_ what's being asked, but those that provide at a minimum what is being asked. So "chmod a+rwx" would also be a correct answer given that it does what the question is asking - even though it's a fairly silly thing to actually do. (In practice we would never have put an answer like that in, but hopefully you get the point).

As an aside, the "Jan 25" refers to "Jan 25, 2005" which is when we were writing the exams - about a week before Solaris 10 was actually released.
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omarfaridCommented:
So, if you are testing person's knowledge, why do you have to play in the question language? there are many people that excellent in technical terms but weak in English :)
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