Question 1

What is the reason to design an operating system which recognizes the type of a file?

Accepted Answer

Because it can then operate on the file in reasonable ways, i.e., the system uses the type of the file and the type of operations that can be done on that file.

Question 2

UNIX rm command can delete non-empty directory

Accepted Answer

A) True 
 B)False  False

Question 3

Manipulating files through memory rather than using the read() and write() system calls_________________

Accepted Answer

A)  simplifies, but retards file access and usage 
B)  simplifies and speeds up file access and usage 
C)  is not recommended for single-processor operating systems 
D)  complicates, but retards file access and usage 
A)  simplifies, but retards file access and usage 
B)  simplifies and speeds up file access and usage 
C)  is not recommended for single-processor operating systems 
D)  complicates, but retards file access and usage B

Question 4

The following information is presented for the prog.c -rwxr-xr-- 1 Jim staff 130 May 25 22:13 prog.c
Users Jim, Sara and Mike are the members of the group staff

Accepted Answer

A)  Jim can invoke read and execute operation on prog.c 
B)  Mike can read and write to prog.c 
C)  Alan can read prog.c 
D)  Sara can modify prog.c 
A)  Jim can invoke read and execute operation on prog.c 
B)  Mike can read and write to prog.c 
C)  Alan can read prog.c 
D)  Sara can modify prog.c

Question 5

Truncating a file operation resets values of all its attributes and releases its file space.

Accepted Answer

A) True 
 B)False

Question 6

The garbage collection is necessary _____

Accepted Answer

A)  in each implementation of the directory structure 
B)  in tree-based directory structure only 
C)  in acyclic-graph directory structure only 
D)  in general graph directory structure only 
A)  in each implementation of the directory structure 
B)  in tree-based directory structure only 
C)  in acyclic-graph directory structure only 
D)  in general graph directory structure only

Question 7

close() operation _____ an open count associated with a given file.

Accepted Answer

A)  decreases 
B)  increases 
C)  resets 
D)  does not change 
A)  decreases 
B)  increases 
C)  resets 
D)  does not change

Question 8

What are the main disadvantages of associating a password with each file?

Accepted Answer

(1) the number of passwords that a user

Question 9

Is it possible that read_next() operation is used in direct access method?

Accepted Answer

Yes, it is. One of the approaches propos

Question 10

Why is open() call implemented?

Accepted Answer

Most of the file operations involve sear

Question 11

In two-level directory structure, the system's master file directory (MFD) is searched when a user logs in.

Accepted Answer

A) True 
 B)False

Question 12

A relative path name defines a path from_________________________

Accepted Answer

A)  the root directory 
B)  the current directory 
C)  from the UFD (user file directory) 
D)  from the MFD (master file directory) 
A)  the root directory 
B)  the current directory 
C)  from the UFD (user file directory) 
D)  from the MFD (master file directory)

Question 13

With _______ locking, once a process acquires an exclusive lock, the operating system will prevent any other process from accessing the locked file.

Accepted Answer

A)  temporary 
B)  mandatory 
C)  shared 
D)  exclusive 
A)  temporary 
B)  mandatory 
C)  shared 
D)  exclusive

Question 14

What does it mean internal fragmentation associated with the internal file structure?

Accepted Answer

Because disk space is always allocated i

Question 15

Is an extension a part of a file name?

Accepted Answer

A) True 
 B)False

Question 16

Some binary files can include a magic number. This mechanism is used by __________.

Accepted Answer

A)  MS Windows 
B)  UNIX 
C)  macOS 
D)  JavaVM 
A)  MS Windows 
B)  UNIX 
C)  macOS 
D)  JavaVM

Question 17

Sequential access to a file is based on a disk model of a file.

Accepted Answer

A) True 
 B)False

Question 18

What steps are necessary to create a file?

Accepted Answer

A)  allocating a space in the file system 
B)  making an entry for the file in the directory 
C)  all of the above 
D)  none of the above 
A)  allocating a space in the file system 
B)  making an entry for the file in the directory 
C)  all of the above 
D)  none of the above

Question 19

The length of a logical record is fixed for a given operating system.

Accepted Answer

A) True 
 B)False

Question 20

When the exclusive lock is applied to a file then _____________

Accepted Answer

A)  only one process can use this file 
B)  only one process can write to this file, but many processes can read it concurrently 
C)  many processes can read and write to this file concurrently 
D)  processes can write to this file only 
A)  only one process can use this file 
B)  only one process can write to this file, but many processes can read it concurrently 
C)  many processes can read and write to this file concurrently 
D)  processes can write to this file only

What is the reason to design an operating system which recognizes the type of a file?

UNIX rm command can delete non-empty directory

Manipulating files through memory rather than using the read() and write() system calls_________________

The following information is presented for the prog.c -rwxr-xr-- 1 Jim staff 130 May 25 22:13 prog.c Users Jim, Sara and Mike are the members of the group staff

Truncating a file operation resets values of all its attributes and releases its file space.

The garbage collection is necessary _____

close() operation _____ an open count associated with a given file.

What are the main disadvantages of associating a password with each file?

Is it possible that read_next() operation is used in direct access method?

Why is open() call implemented?

In two-level directory structure, the system's master file directory (MFD) is searched when a user logs in.

A relative path name defines a path from_________________________

With _______ locking, once a process acquires an exclusive lock, the operating system will prevent any other process from accessing the locked file.

What does it mean internal fragmentation associated with the internal file structure?

Is an extension a part of a file name?

Some binary files can include a magic number. This mechanism is used by __________.

Sequential access to a file is based on a disk model of a file.

What steps are necessary to create a file?

The length of a logical record is fixed for a given operating system.

When the exclusive lock is applied to a file then _____________

Introduction

Operating-System Structures

Processes

Threads Concurrency

Cpu Scheduling

Synchronization Tools

Synchronization Examples

Deadlocks

Main Memory

Virtual Memory

Mass-Storage Structure

Io Systems

File-System Implementation

File-System Internals

Security

Protection

Filters

Exam 13: File-System Interface

What is the reason to design an operating system which recognizes the type of a file?

UNIX rm command can delete non-empty directory

Manipulating files through memory rather than using the read() and write() system calls_________________

The following information is presented for the prog.c -rwxr-xr-- 1 Jim staff 130 May 25 22:13 prog.c Users Jim, Sara and Mike are the members of the group staff

Truncating a file operation resets values of all its attributes and releases its file space.

The garbage collection is necessary _____

close() operation _____ an open count associated with a given file.

What are the main disadvantages of associating a password with each file?

Is it possible that read_next() operation is used in direct access method?

Why is open() call implemented?

In two-level directory structure, the system's master file directory (MFD) is searched when a user logs in.

A relative path name defines a path from_________________________

With _______ locking, once a process acquires an exclusive lock, the operating system will prevent any other process from accessing the locked file.

What does it mean internal fragmentation associated with the internal file structure?

Is an extension a part of a file name?

Some binary files can include a magic number. This mechanism is used by __________.

Sequential access to a file is based on a disk model of a file.

What steps are necessary to create a file?

The length of a logical record is fixed for a given operating system.

When the exclusive lock is applied to a file then _____________

Introduction

Operating-System Structures

Processes

Threads Concurrency

Cpu Scheduling

Synchronization Tools

Synchronization Examples

Deadlocks

Main Memory

Virtual Memory

Mass-Storage Structure

Io Systems

File-System Implementation

File-System Internals

Security

Protection

Filters