102-500 Valid Test Bootcamp - Lpi LPIC-1 Exam 102, Part 2 of 2, version 5.0 - High Pass-Rate 102-500 New Exam Materials

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Security

Like any other security concept, Linux security covers the objectives as follow:

Setting diverse passwords, utilize nmap as well as netstat to explore system ports that are open;
Securing data through encryption;
Getting the gist of the TCP wrappers and shadow passwords;
Setting up host security;
Grasp the GnuPG features & SSH port tunnels as well as their usage

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Lpi LPIC-1 Exam 102, Part 2 of 2, version 5.0 Sample Questions (Q208-Q213):

NEW QUESTION # 208
What output is produced by the following command sequence?
echo '1 2 3 4 5 6' | while read a b c; do
echo result $c $b $a;
done

A. result: 3 2 1
B. result: 6 5 4
C. result: 3 4 5 6 2 1
D. result: 6 5 4 3 2 1
E. result: 1 2 3 4 5 6

Answer: B

Explanation:
The command sequence uses a while loop to read the input from the echo command and assign the values to the variables a, b, and c. The read command reads one line of input at a time and splits it into words according to the IFS variable, which is a space by default. The first word is assigned to the first variable, the second word to the second variable, and so on. If there are more words than variables, the remaining words are assigned to the last variable. In this case, the input line has six words, so the read command assigns 1 to a, 2 to b, and 3 4 5 6 to c. Then, the echo command prints the result with the variables in reverse order, i.e., $c $b $a. Therefore, the output is result: 6 5 4 3 2 1. However, the answer choices only show the first three words of the output, so the correct answer is A. result: 6 5 4. Reference: [LPI 102-500 Exam Objectives], Topic 105.3: Customize and use the shell environment, Weight: 4. [LPI Linux Essentials Study Guide], Chapter 7: The Linux Operating System, Section 7.2: Shell Scripting.

NEW QUESTION # 209
Which of the following commands configure network interfaces based on the system's existing distribution-specific configuration files? (Choose two.)

A. ifconf
B. ifup
C. ifdown
D. ifpause
E. ifstart

Answer: B,C

Explanation:
The commands ifdown and ifup are used to configure network interfaces based on the system's existing distribution-specific configuration files. These files are typically located in /etc/network/interfaces or
/etc/sysconfig/network-scripts, depending on the Linux distribution. The ifdown command shuts down a network interface, while the ifup command brings up a network interface. These commands can be used to apply changes made to the configuration files without rebooting the system12.
The other commands are not related to network interface configuration. The ifconf command does not exist in Linux. The ifpause and ifstart commands are not standard Linux commands, but they may be aliases or scripts defined by some users or distributions. References: 1: NetworkConfigurationCommandLine - Community Help Wiki. 2: [How to Configure Network Static IP Address on RHEL/CentOS 8/7/6].

NEW QUESTION # 210
Which of the following configuration files should be modified to set default shell variables for all users?

A. /etc/.bashrc
B. /etc/bashrc
C. /etc/profile
D. ~/.bash_profile

Answer: C

Explanation:
The /etc/profile file is a configuration file that is read by the Bash shell when a user logs in. It contains commands and settings that apply to all users of the system, such as environment variables, PATH information, terminal settings, and security commands. Environment variables are variables that affect the behavior of programs and processes. For example, the PATH variable defines the directories where the shell looks for executable files, and the JAVA_HOME variable defines the location of the Java installation. The /etc/profile file can also source other files from the /etc/profile.d/ directory, which can contain additional scripts for setting environment variables or other system-wide settings. The /etc/profile file is the best option for setting default shell variables for all users, as it is executed before any user-specific files. The other options are not suitable for this purpose, because:
/etc/bashrc is a configuration file that is read by the Bash shell when it is started as an interactive non-login shell. It contains commands and settings that apply to all interactive shells of the system, such as aliases, functions, and prompt settings. It is not executed when the shell is started as a login shell, which is the case when a user logs in. Therefore, it is not a good place to set default shell variables for all users.
~/.bash_profile is a configuration file that is read by the Bash shell when it is started as a login shell for a specific user. It contains commands and settings that apply only to that user, such as environment variables, PATH information, and startup programs. It can also source other files, such as ~/.bashrc, which is read by the shell when it is started as an interactive non-login shell for that user. It is not a good place to set default shell variables for all users, as it only affects the user who owns the file.
/etc/.bashrc is not a valid configuration file for the Bash shell. The dot (.) at the beginning of the file name indicates that it is a hidden file, which means that it is not visible by default in the file system. The Bash shell does not look for this file when it is started, and it does not execute any commands or settings from it. Therefore, it is not a good place to set default shell variables for all users.
Reference:
1 2

NEW QUESTION # 211
Which of the following configuration files should be modified to globally set shell variables for all users?

A. /etc/.bashrc
B. /etc/bashrc
C. /etc/profile
D. ~/.bash_profil
E. /etc/shellenv

Answer: C

NEW QUESTION # 212
Which of the following statements is true regarding systemd timer units?

A. Each systemd timer unit controls a specific systemd service unit.
B. Timer units only exist in the system scope and are not available for users.
C. Timer units can only be defined within a service unit's file.
D. The command executed by the timer is specified in the timer unit's [Cmd]section.
E. A dedicated system service, systemd-cron, handles the execution of timer units.

Answer: A

Explanation:
Explanation/Reference:

NEW QUESTION # 213
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102-500 Valid Test Bootcamp - Lpi LPIC-1 Exam 102, Part 2 of 2, version 5.0 - High Pass-Rate 102-500 New Exam Materials

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Lpi LPIC-1 Exam 102, Part 2 of 2, version 5.0 Sample Questions (Q208-Q213):

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