If you mean mounted with noexec, that's different, that's something that is not done by default on CentOS. That is something that can be
Not to mention noexec is fairly worthless on linux anyways since you can easily bypass it.
So /dev/VolGroup00/LogVol00 /tmp ext3 loop,noexec,nosuid,rw 0 0
Is useless to do? What about chmod so that no one can execute anything, rw-rw-rw- ? Then no executes via chmod. If so, what a waste of time working on this...lol