LPI 101-500 Exam With Confidence Using Practice Dumps

The correct answer when talking about mount points is that every existing directory can be used as a mount point. A mount point is a directory in the Linux file-system where a file system, partition, or storage device can be attached and accessed1. To create a mount point, you need root privileges. Mounting means making the contents of the attached file system, partition, or storage device available in the mount point directory1.

The other options are incorrect for the following reasons:

Only empty directories can be used as a mount point. This is not true, as any directory can be used as a mount point, regardless of whether it contains files or not. However, if the directory is not empty, the files inside it will be hidden by the mounted file system until it is unmounted2. Therefore, it is recommended to use empty directories as mount points to avoid confusion and data loss2.

Directories need to have the SetUID flag set to be used as a mount point. This is not true, as the SetUID flag is a special permission that allows a file to be executed with the privileges of its owner, regardless of who runs it3. This flag has nothing to do with mounting file systems, and it is not required for a directory to be used as a mount point4.

Files within a directory are deleted when the directory is used as a mount point. This is not true, as the files within a directory are not deleted when the directory is used as a mount point. They are only hidden by the mounted file system until it is unmounted2. The files are still present on the disk and can be recovered by unmounting the file system or using another mount point to access them2.

 When using rpm --verify to check files created during the installation of RPM packages, the following information is taken into consideration:

Timestamps. RPM compares the modification time of the installed files with the original time stored in the RPM database. If the file has been modified after installation, the timestamp will differ and RPM will report it with an M flag1.

MD5 checksums. RPM calculates the MD5 checksum of the installed files and compares it with the original checksum stored in the RPM database. If the file has been altered in any way, the checksum will differ and RPM will report it with an 5 flag1.

File sizes. RPM compares the size of the installed files with the original size stored in the RPM database. If the file has been truncated or appended, the size will differ and RPM will report it with an S flag1.

RPM does not take into consideration the following information:

Inodes. RPM does not check the inode number of the installed files, as it is not a reliable indicator of file identity. The inode number can change if the file is moved, copied, or restored from a backup2.

GnuPG signatures. RPM does not verify the GnuPG signatures of the installed files, as they are not part of the RPM package format. The GnuPG signatures are used to verify the authenticity and integrity of the RPM package files before installation, not after3.

The cut command is used to extract selected fields from each line of a file. The -d option specifies the delimiter that separates the fields, and the -f option specifies the fields to print. The /etc/passwd file contains information about the users on the system, and each field is separated by a colon (:). Therefore, cut -d : -f 1,4 /etc/passwd will print the first and fourth fields of each line, which are the username and the primary group ID respectively. The other commands are either invalid or do not perform the desired task. The fmt command is used to reformat paragraphs of text, but it does not have a -f option. The split command is used to split a file into smaller files, but it does not have a -c option. The paste command is used to merge lines of files, but it does not have a -f option. References:

LPIC-1 Exam 101 Objectives, Topic 103: GNU and Unix Commands, 103.3 Perform basic file management

LPIC-1 Linux Administrator 101-500 Exam FAQ, LPIC-1 Exam 101 Objectives, GNU and Unix Commands (Total Weight: 25)