Operating System Questions & Answers – File System Interface Protection

This set of Operating System Multiple Choice Questions & Answers (MCQs) focuses on “File System Interface Protection”.

1. Reliability of files can be increased by _____________
a) keeping the files safely in the memory
b) making a different partition for the files
c) by keeping them in external storage
d) by keeping duplicate copies of the file
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2. Protection is only provided at the _____ level.
a) lower
b) central
c) higher
d) none of the mentioned
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3. What is the main problem with access control lists?
a) their maintenance
b) their length
c) their permissions
d) all of the mentioned
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4. Many systems recognize three classifications of users in connection with each file (to condense the access control list).
a) Owner
b) Group
c) Universe
d) All of the mentioned
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5. All users in a group get _______ access to a file.
a) different
b) similar
c) same
d) none of the mentioned
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6. Universe consists of _____________
a) all users that aren’t included in the group or owners
b) all users that are not owners
c) all users in the system
d) none of the mentioned
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7. In UNIX, groups can be created and modified by?
a) superuser
b) any user
c) a programmer only
d) the people in the group only
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8. To control access the three bits used in UNIX are represented by _____________
a) r
b) w
c) x
d) all of the mentioned
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9. If each access to a file is controlled by a password, then what is the disadvantage?
a) user will need to remember a lot of passwords
b) it is not reliable
c) it is not efficient
d) all of the mentioned
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10. What will happen in a multi level directory structure?
a) the same previous techniques will be used as in the other structures
b) a mechanism for directory protection will have to applied
c) the subdirectories do not need protection once the directory is protected
d) none of the mentioned
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11. In UNIX, the directory protection is handled _________ to the file protection.
a) different
b) similar
c) it is not handled at all
d) none of the mentioned
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12. Disks are segmented into one or more partitions, each containing a file system or ______
a) left ‘raw’
b) made into swap space
c) made into backup space
d) left ‘ripe’
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Sanfoundry Global Education & Learning Series – Operating System.

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