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1 what are typical operations that may be performed on a directory2 what is the relationship between a pathname and a
what file organization would you choose to maximize efficiency in terms of speed of access use of storage space and
ignoring overhead for directories and file descriptors consider a file system in which files are stored in blocks of
some operating systems have a tree-structured file system but limit the depth of the tree to some small number of
consider a hierarchical file system in which free disk space is kept in a free space lista suppose the pointer to free
in unix system v the length of a block is 1 kbyte and each block can hold a total of 256 block addresses using the
consider the organization of a unix file as represented by the inode figure 1214 assume that there are 12 direct block
1 what is an embedded system2 what are some typical requirements or constraints on embedded systems3 what is an
1 what concurrency mechanisms are available in ecos2 what is the target application for tinyos3 what are the design
one scheme to avoid the problem of preallocation versus waste or lack of contiguity is to allocate portions of
create a flowchart that will contain two modules one to prompt the user to input the sales amount and the other to
what are the uses of context free grammars what are the applications of context free
the question arises as to whether it is possible to develop a program that can analyze a piece of software to determine
a sorting algorithm is stable if elements with equal keys are left in the same order as they occur in the input look at
1 list and briefly define three intruder behavior patterns2 what is the role of compression in the operation of a
explain the trade-offs between system scalability and system transparency you may encounter when designing a
1 define computer security2 what are the fundamental requirements addressed by computer security3 what is the
tinyoss scheduler serves tasks in fifo order many other schedulers for tinyos have been proposed but none have caught
the discussion of ecos spinlocks included an example showing why spinlocks should not be used on a uniprocessor system
the implementation of mutexes within the ecos kernel does not support recursive locks if a thread has locked a mutex
1 explain the difference between a simple memory card and a smart card2 list and briefly describe the principal
because of the known risks of the unix password system the sunos-40 documentation recommends that the password file be
assume that passwords are limited to the use of the 95 printable ascii characters and that all passwords are 10
assume that passwords are selected from four-character combinations of 26 alphabetic characters assume that an
an early attempt to force users to use less predictable passwords involved computersupplied passwords the passwords