202-450 Exam Dumps : LPIC-2 - Exam 202 (part 2 of 2), version 4.5

To allow X connections to be forwarded from or through an SSH server, the configuration keyword that must be set to yes in the sshd configuration file is XllForwarding. This keyword enables X11 forwarding, which is a mechanism that allows graphical applications to be run on a remote host and displayed on a local host. The sshd configuration file is usually located at /etc/ssh/sshd_config, and the XllForwarding keyword can be set globally or per host. For example:

XllForwarding yes

This will enable X11 forwarding for all hosts. To enable X11 forwarding for a specific host, use the Match directive, followed by the Host keyword and the host name or pattern. For example:

Match Host example.com XllForwarding yes

This will enable X11 forwarding only for the host example.com.

References:

• X11 Forwarding using SSH
• sshd_config - OpenSSH SSH daemon configuration file
• How To Configure X11 Forwarding Using SSH In Linux

The security option in the smb.conf file determines how Samba authenticates users who try to access its shares. The value of security = share means that Samba does not require a valid username and password for each connection, but only for each share. This allows users to access shares anonymously, without providing any credentials. This is useful for setting up a guest printer service, where anyone can print to a shared printer without logging in. However, this option is deprecated and not recommended for security reasons. The other options are either invalid or irrelevant for this question.

The tool dig, which stands for domain information groper, is a command-line utility that provides the most information when performing DNS queries, without any options. Dig can query any type of DNS record and display the full response from the DNS server, including the header, question, answer, authority, and additional sections. Dig can also show the query time, server address, response code, flags, and statistics. Dig is a versatile and powerful tool that can be used for troubleshooting, testing, and debugging DNS issues123 References:

• dig(1) - Linux manual page
• How to Use the Dig Command on Linux
• How to use the dig command for DNS queries on Linux