Question 1

A file system may be mounted:
A) during the boot time only.
B) during the boot time or when the operating system is running.
C) when the operating system is running.
D) Only files systems included in a file systems table may be mounted when the operating system is running.

Accepted Answer

A file system can be mounted during the boot time or when the operating system is running. This allows for flexibility in managing data storage and accessing files as needed. However, a file system table or configuration file is typically used to specify which file systems are available for mounting when the operating system is running.

Question 2

The NFS protocol:
A) provides concurrency control mechanisms.
B) does not provide concurrency control mechanisms.
C) does not provide concurrency control mechanisms except file locking.
D) may provide concurrency control mechanisms.

Accepted Answer

NFS does not inherently provide concurrency control mechanisms, such as locking or transaction controls, to manage simultaneous access or modifications to files by multiple clients. It primarily focuses on allowing file access and sharing over a network.

Question 3

The file owner:
A) is the user who cannot change the file attributes, but can execute the file.
B) is the user who can change the file attributes and grant access to the file.
C) is the user who can change the file attributes, but cannot grant access to the file.
D) is the only user who can execute the file.

Accepted Answer

The file owner is the user who has the highest level of control over the file. This user can change the file attributes such as permissions and ownership, and can also grant access to other users. This user also has the ability to execute the file if they have the necessary permissions. Therefore, option B is the most correct choice.

Question 4

Mounting a file systems means that:
A) the file system is removed from the disk space.
B) the file system is being created in the disk space.
C) the file system is becoming available within the file system name space.
D) the file system is becoming unavailable within the file system name space.

Accepted Answer

When you mount a file system, you are making it available within the file system name space. This means that the operating system can access and interact with the files and directories within that file system as if they were part of the main file system on the disk.

Question 5

The root-partition:
A) contains an operating system kernel and it is not necessary to be mounted.
B) contains an operating system kernel and it is mounted during boot time.
C) contains a list of the operating systems which may be booted.
D) does not contain the operating system kernel, but it is the first mounted file system during the boot time.

Accepted Answer

The root-partition is the partition that contains the operating system kernel and is mounted during boot time. It is the first file system to be mounted and is required for the system to function properly.

Question 6

What does it mean that a system is dual-booted?

Accepted Answer

The answer of What does it mean that a system...

Question 7

Enumerate the layers of the virtual file system.

Accepted Answer

The answer of Enumerate the layers of the virtual file...

Question 8

Which UNIX inodes and/or vnodes used by the Virtual File System (VFS) have a file representation structure?
A) UNIX inodes and vnodes are unique designators within a single file system only.
B) UNIX inodes are not unique designators for a single file system.
C) vnodes are wide network unique file designators.
D) vnodes are unique file designators for remote file systems only.

Accepted Answer

The answer of Which UNIX inodes and/or vnodes used by...

Question 9

In file systems consistent with UNIX semantics:
A) users cannot share the pointer of current location into a file.
B) writes to a file by a user are immediately visible to other users that have this file open.
C) writes performed by one user are not seen by other users .
D) a file cannot be opened by one user only.

Accepted Answer

In UNIX file systems, writes to a file are immediately visible to other users that have the file open. However, users cannot share the pointer of current location into a file and writes performed by one user are not isolated from other users. And, a file can be opened by one user only or multiple users depending on the access permissions set for that file.

Question 10

What does a mount point mean?

Accepted Answer

The answer of What does a mount point mean?...

Question 11

Stateless File Servers:
A) require that each client request is self-contained, i.e., all information needed to locate the file and perform the requested operation is given.
B) track which clients have exported volumes.
C) are very secure.
D) maintain states of all open files.

Accepted Answer

Stateless file servers require that each client request is self-contained, which means that all the necessary information to locate the file and perform the requested operation is provided by the client in the request. Stateless servers do not maintain any information about the states of open files or which clients have exported volumes, nor are they inherently more secure than stateful servers.

Question 12

NFS (Network File System):
A) is consistent with UNIX Semantics.
B) is consistent with Session Semantics.
C) is consistent with Immutable-Shared-Files Semantics.
D) is not fully consistent with UNIX Semantics.

Accepted Answer

The answer of NFS (Network File System):
A) is consistent with...

Question 13

When is the raw disk used?

Accepted Answer

The answer of When is the raw disk used?...

Question 14

Why should the boot loader understand the file system structure?

Accepted Answer

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Question 15

The virtual file system layer is dedicated to allow access to:
A) different types of locally mounted file systems and remote file systems.
B) locally mounted file systems only.
C) remote file systems only.
D) locally mounted file systems or remote ones, but for one type of file system only.

Accepted Answer

The virtual file system layer is designed to provide access to both locally mounted file systems and remote file systems of different types. Therefore, option A is the correct choice.

Question 16

A file may be associated with several images at the same time in:
A) file systems consistent with UNIX Semantics.
B) file systems consistent with Windows Semantics.
C) file systems consistent with Session Semantics.
D) file systems consistent with NFS (Network File System) Semantics.

Accepted Answer

Session semantics allow multiple images or views of a file to exist simultaneously, as changes are not immediately visible to other sessions.

Question 17

Why the directories are used in the file systems?

Accepted Answer

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Question 18

What information is stored in an in-memory mount table?

Accepted Answer

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Question 19

Why may operating system disallow a mount over a directory that contains files?

Accepted Answer

The answer of Why may operating system disallow a mount...

Question 20

What conditions on user and group ids have to be fulfilled when a new file system is mounted?

Accepted Answer

The answer of What conditions on user and group ids...

Quiz 15: File-System Internals

A file system may be mounted:

The NFS protocol:

The file owner:

Mounting a file systems means that:

The root-partition:

What does it mean that a system is dual-booted?

Enumerate the layers of the virtual file system.

Which UNIX inodes and/or vnodes used by the Virtual File System (VFS) have a file representation structure?

In file systems consistent with UNIX semantics:

What does a mount point mean?

Stateless File Servers:

NFS (Network File System) :