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Recent questions tagged file-system

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Andrew S. Tanenbaum (OS) Edition 4 Exercise 4 Question 29 (Page No. 335)
Suppose that file $21$ in Fig. $4-25$ was not modified since the last dump. In what way would the four bitmaps of Fig. $4-26$ be different?
Suppose that file $21$ in Fig. $4-25$ was not modified since the last dump. In what way would the four bitmaps of Fig. $4-26$ be different?
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67
Andrew S. Tanenbaum (OS) Edition 4 Exercise 4 Question 23 (Page No. 334)
Consider a $4-TB$ disk that uses $4-KB$ blocks and the free-list method. How many block addresses can be stored in one block?
Consider a $4-TB$ disk that uses $4-KB$ blocks and the free-list method. How many block addresses can be stored in one block?
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69
Andrew S. Tanenbaum (OS) Edition 4 Exercise 4 Question 21 (Page No. 334)
Name one advantage of hard links over symbolic links and one advantage of symbolic links over hard links.
Name one advantage of hard links over symbolic links and one advantage of symbolic links over hard links.
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72
Andrew S. Tanenbaum (OS) Edition 4 Exercise 4 Question 18 (Page No. 334)
Consider a file whose size varies between $4\: KB$ and $4\: MB$ during its lifetime. Which of the three allocation schemes (contiguous, linked and table/indexed) will be most appropriate?
Consider a file whose size varies between $4\: KB$ and $4\: MB$ during its lifetime. Which of the three allocation schemes (contiguous, linked and table/indexed) will be ...
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74
Andrew S. Tanenbaum (OS) Edition 4 Exercise 4 Question 16 (Page No. 334)
Consider the $i\text{-node}$ shown in Fig. $4-13.$ If it contains $10$ direct addresses and these were $8$ bytes each and all disk blocks were $1024\: KB,$ what would the largest possible file be?
Consider the $i\text{-node}$ shown in Fig. $4-13.$ If it contains $10$ direct addresses and these were $8$ bytes each and all disk blocks were $1024\: KB,$ what would the...
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80
Andrew S. Tanenbaum (OS) Edition 4 Exercise 4 Question 10 (Page No. 333)
Consider the directory tree of Fig. $4-8.$ If /usr/jim is the working directory, what is the absolute path name for the file whose relative path name is ../ast/x?
Consider the directory tree of Fig. $4-8.$ If /usr/jim is the working directory, what is the absolute path name for the file whose relative path name is ../ast/x?
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82
Andrew S. Tanenbaum (OS) Edition 4 Exercise 4 Question 8 (Page No. 333)
A simple operating system supports only a single directory but allows it to have arbitrarily many files with arbitrarily long file names. Can something approximating a hierarchical file system be simulated? How?
A simple operating system supports only a single directory but allows it to have arbitrarily many files with arbitrarily long file names. Can something approximating a hi...
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83
Andrew S. Tanenbaum (OS) Edition 4 Exercise 4 Question 7 (Page No. 333)
In some systems it is possible to map part of a file into memory. What restrictions must such systems impose? How is this partial mapping implemented?
In some systems it is possible to map part of a file into memory. What restrictions must such systems impose? How is this partial mapping implemented?
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85
Andrew S. Tanenbaum (OS) Edition 4 Exercise 4 Question 5 (Page No. 333)
Systems that support sequential files always have an operation to rewind files. Do systems that support random-access files need this, too?
Systems that support sequential files always have an operation to rewind files. Do systems that support random-access files need this, too?
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86
Andrew S. Tanenbaum (OS) Edition 4 Exercise 4 Question 4 (Page No. 333)
Is the open system call in $UNIX$ absolutely essential? What would the consequences be of not having it?
Is the open system call in $UNIX$ absolutely essential? What would the consequences be of not having it?
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88
Andrew S. Tanenbaum (OS) Edition 4 Exercise 4 Question 2 (Page No. 332)
In Windows, when a user double clicks on a file listed by Windows Explorer, a program is run and given that file as a parameter. List two different ways the operating system could know which program to run.
In Windows, when a user double clicks on a file listed by Windows Explorer, a program is run and given that file as a parameter. List two different ways the operating sys...
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89
Andrew S. Tanenbaum (OS) Edition 4 Exercise 4 Question 1 (Page No. 332)
Give five different path names for the file /etc/passwd. (Hint: Think about the directory entries ‘‘.’’ and ‘‘..’’.)
Give five different path names for the file /etc/passwd. (Hint: Think about the directory entries ‘‘.’’ and ‘‘..’’.)
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90
Andrew S. Tanenbaum (OS) Edition 4 Exercise 1 Question 19 (Page No. 82)
Is there any reason why you might want to mount a file system on a nonempty directory? If so, what is it?
Is there any reason why you might want to mount a file system on a nonempty directory? If so, what is it?
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