Could you replicate a multilevel directory structure, Operating System

Assignment Help:

Q. Could you replicate a multilevel directory structure with a single-level directory structure in which arbitrarily long names can be used? If your answer is yes describe how you can do so and contrast this scheme with the multilevel directory scheme. If your answer is no then describe what prevents your simulation's success. How would your answer alter if file names were limited to seven characters?

Answer: If arbitrarily long names are able to be used then it is possible to simulate a multilevel directory structure. This is able to be done for example by using the character "." to point out the end of a subdirectory. Therefore for example the name jim.java.F1 identify that F1 is a file in subdirectory java which in turn is in the root directory jim. If file names were restricted to seven characters then the above scheme couldn't be utilized and thus in general the answer is no. The next best approach in these circumstances would be to use a specific file as a symbol table (directory) to map arbitrarily long names (such as jim.java.F1) into shorter arbitrary names (such as XX00743) which are then utilized for actual file access.


Related Discussions:- Could you replicate a multilevel directory structure

Define dynamic loading, Define dynamic loading. To obtain better memory...

Define dynamic loading. To obtain better memory-space utilization dynamic loading is used. With dynamic loading, a routine is not loaded until it is called. All routines are ke

What are the two types of fragmentations, Questiion 1 Use Priority Sche...

Questiion 1 Use Priority Scheduling Algorithm to schedule the following processes        Process                 Burst Time             Priority/Time            P1

Drawbacks of least-recently used algorithm, The question of fairness, regar...

The question of fairness, regarding page eviction, is a hard one. How do we decide what is fair? Many operating systems use global LRU, where pages from all processes are managed t

Define page fault, Page fault is a trap to the software gained by the har...

Page fault is a trap to the software gained by the hardware when a process accesses a page that is goes in the virtual address space, but not added in physical memory. In the har

Implementation of lru, 1. On every access, mark the page with a timestamp. ...

1. On every access, mark the page with a timestamp. Whenever we need to evict a page, we search through memory for the oldest page, the least-recently used page. But we need memory

Role of discovery and prototype, Discuss the role of discovery and developm...

Discuss the role of discovery and developmental prototypes in defining requirements for this project.Are throwaway prototypes appropriate, or should the project team quickly gather

What are threads?, What are threads? A thread is alike to sequential pr...

What are threads? A thread is alike to sequential programs. Single threads have a beginning, sequence and end. At any given point in time during the runtime of the thread there

What is a path name, What is a path name? A pathname is the path from t...

What is a path name? A pathname is the path from the root by all subdirectories to a specified file. In a two-level directory structure a user name and a file name explain a pa

What is the design issues involved in segmentation?, SEGMENTATION HARDWARE ...

SEGMENTATION HARDWARE An execution to map two-dimensional user-defined addresses into one-dimensional physical addresses. This mapping is affected by means of segment table. Ev

Why global variables are unacceptable, Why Global variables are unacceptabl...

Why Global variables are unacceptable Global variable, for instance, are unacceptable because they break the rules of self - containment. If all procedural components are runni

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd