LPI 102-500 Exam With Confidence Using Practice Dumps

The default name of the configuration file for the Xorg X11 server is xorg.conf. This file is used to store initial setup for X, such as settings for video cards, monitors, input devices, and other options. The Xorg X11 server is a display server that uses a configuration file called xorg.conf and files ending in the suffix .conf for its initial setup1. The xorg.conf file is typically located in /etc/X11/xorg.conf, but its location may vary across operating system distributions2. The xorg.conf file is not mandatory, as the Xorg X11 server can automatically configure most hardware and settings. However, it can be created and edited manually if needed3. References:

Xorg - ArchWiki

xorg.conf - Wikipedia

How to Configure X11 in Linux: 10 Steps (with Pictures) - wikiHow

The iconv command is used to convert the encoding of a file from one character set to another. A character set is a collection of characters that are assigned numerical values called code points. Different character sets may use different numbers of bytes to represent each character, and may have different mappings of code points to characters. For example, ASCII is a single-byte character set that encodes 128 characters, while UTF-8 is a variable-length character set that can encode over a million characters. The iconv command can convert between many different character sets, such as ASCII, UTF-8, ISO-8859-1, etc. The basic syntax for using the command is as follows:

iconv [options] -f from-encoding -t to-encoding input-file > output-file

The -f option specifies the encoding of the input file, and the -t option specifies the encoding of the output file. The input file is read from standard input, and the output file is written to standard output, unless specified otherwise. The iconv command can also list all the supported character sets with the -l option1234. References:

How To Use the iconv Command on Linux - How-To Geek

iconv command in Linux with Examples - GeeksforGeeks

iconv - convert file encoding from one character set to another | Linux …

Using iconv to change character encodings - FileFormat.Info

The /etc/passwd file stores local accounts of the system. It is a readable text file and uses colons (:) to separate the fields. This file helps with converting user IDs to names (and back). It is fine that all users can read this file, but they should not be able to change fields. Therefore, the most correct permissions for /etc/passwd are -rw-r–r–, which means that only the owner (root) can write to the file, and everyone can read it. The /etc/shadow file contains information about the system’s users’ passwords. It is owned by user root and group shadow, and has 640 permissions. The password is stored as a long string of characters, which is a combination of the hashing algorithm, optional salt applied, and the hashed password itself. Other users are not allowed to read the file directly, to prevent them from gathering hashed passwords of others. Therefore, the most correct permissions for /etc/shadow are -r--------, which means that only the owner (root) can read the file, and no one else can read or write to it. References: