Pass Using 102-500 Exam Dumps

The useradd command is used to create new user accounts in Linux. It has many options that can be specified to customize the user creation process. Two of these options are:

-d, --home HOME_DIR: This option allows the user to specify the absolute path to the user’s home directory. The default is to append the username to the base directory specified by the HOME variable in /etc/default/useradd, or /home by default. The directory does not have to exist but will not be created if it is missing12

-u, --uid UID: This option allows the user to specify the numeric user ID (UID) of the user. The UID must be unique and not already in use by another user. The default is to use the next available UID from the range specified by the UID_MIN and UID_MAX variables in /etc/login.defs13

References: 1: useradd(8) - Linux man page 2: How to Create Users in Linux (useradd Command) | Linuxize 3: Linux Useradd Command Help and Examples - Computer Hope

 The nsswitch.conf file is a configuration file that determines the sources and the order of the sources that are queried for various system databases, such as user information, group information, host names, network services, and more. The C library uses this file to look up various system information when a program or a command requests it. For example, when a user logs in, the C library will use the nsswitch.conf file to determine where to find the user’s password, whether it is in the local /etc/passwd file, or in a remote LDAP server, or both. The nsswitch.conf file allows the system administrator to configure the system databases in a flexible and modular way. References:

[LPI Linux Essentials - Topic 106: The Linux Operating System]

[LPI Linux Administrator - Exam 102 Objectives - Topic 110: Security]

[Linux man page for nsswitch.conf]

 The traceroute command will help identify a broken router between the local and the remote machine. The traceroute command sends a series of packets with increasing time-to-live (TTL) values to a destination and displays the routers that the packets pass through along the way. If a router is broken or unreachable, the traceroute command will show a * symbol or a timeout message. The traceroute command is part of the topic 109.1: Fundamentals of internet protocols, which is one of the objectives of the LPI Linux Administrator - 102 exam12. References: 1: https://learning.lpi.org/en/learning-materials/102-500/  2: https://www.lpi.org/our-certifications/exam-102-objectives/

The netstat utility is a command-line tool that displays network connections, routing tables, interface statistics, masquerade connections, and multicast memberships. It can be used with various options to filter and customize the output. However, it does not provide any information about broadcast services, which are a type of network communication that sends data to all devices on a network segment. Broadcast services are usually handled by other tools, such as ping, traceroute, or arp.

References:

netstat | Microsoft Learn

28 Netstat Commands {A Comprehensive List With Examples} - phoenixNAP