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Examen 201 : Advanced Administration »
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Question 20/20
Explanation: Linux records information about when files were created and last modified as well as when it was
last accessed. There is a cost associated with recording the last access time. The ext2 file system of Linux has an
attribute that allows the super-user to mark individual files such that their last access time is
not recorded. This may lead to significant performance improvements on often accessed frequently changing
files.
Reference: http://www.tldp.org/LDP/solrhe/Securing-Optimizing-Linux-RH-Edition-v1.3/chap6sec73.html
Incorrect Answers
A: The atime option will record the last access time for each file which may degrade system performance.
C: Noexec is a mount flag to not allow any executables to be run from the file system. This won't work since the
files are likely to be text files.
D: Nosuid is a mount flag to disallow any setuid binaries on the file system. This will not improve system
performance.
E: The sync command is used to write the buffers to disk. This will not improve system performance.