Q. In UNIX, groups can be created and modified by :

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Q. To control access the three bits used in UNIX are represented by :

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Q. If each access to a file is controlled by a password, then the disadvantage is that :

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Q. In a multilevel directory structure :

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Q. In UNIX, the directory protection is handled _________ to the file protection.

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Q. Disks are segmented into one or more partitions, each containing a file system or ______

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Q. The three major methods of allocating disk space that are in wide use are :

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Q. In contiguous allocation :

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Q. In linked allocation :

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Q. In indexed allocation :

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Q. On systems where there are multiple operating system, the decision to load a particular one is done by :

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Q. The VFS (virtual file system) activates file system specific operations to handle local requests according to their _______

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Q. The real disadvantage of a linear list of directory entries is the :

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Q. Contiguous allocation of a file is defined by :

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Q. One difficulty of contiguous allocation is :

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Q. _______ and ________ are the most common strategies used to select a free hole from the set of available holes.

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Q. The first fit and best fit algorithms suffer from :

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Q. To solve the problem of external fragmentation, ________ needs to be done periodically.

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Q. If too little space is allocated to a file

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Q. A device driver can be thought of as a translator. Its input consists of _____ commands and output consists of _______ instructions.

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