最新なLpi 202-450問題集（120題）、真実試験の問題を全部にカバー！

質問 1：
Which FTP names are recognized as anonymous users in vsftp when the option anonymous_enable is set to yes in the configuration files? (Choose two.)
A. In the described configuration, any username which neither belongs to an existing user nor has another special meaning is treated as anonymous user.
B. guest
C. ftp
D. anonymous
E. nobody
正解：C,D
解説: (Pass4Test メンバーにのみ表示されます)

質問 2：
What information can be found in the file specified by the status parameter in an OpenVPN server configuration file? (Choose two.)
A. A history of all clients who have connected at some point
B. Errors and warnings generated by the openvpn daemon
C. Statistical information regarding the currently running openvpn daemon
D. A list of currently connected clients
E. Routing information
正解：D,E
解説: (Pass4Test メンバーにのみ表示されます)

質問 3：
What option in the sshd configuration file instructs sshd to permit only specific user names to log in to a system?
(Specify ONLY the option name without any values.)
正解：
AllowUsers
Explanation:
The option in the sshd configuration file that instructs sshd to permit only specific user names to log in to a system is AllowUsers.
This option can be followed by a list of user name patterns, separated by spaces, that are allowed to log in.
For example:
AllowUsers alice bob
This will allow only alice and bob to log in via ssh. Any other user will be denied access. The AllowUsers option can also take the form USER@HOST to restrict logins to particular users from particular hosts. For example:
AllowUsers [email protected].* [email protected]
This will allow alice to log in from any host in the 192.168.1.0/24 network, and bob to log in from the host example.com. The AllowUsers option can be used in conjunction with the DenyUsers option, which does the opposite. The allow/deny directives are processed in the following order: DenyUsers, AllowUsers, DenyGroups, and finally AllowGroups.
References:
sshd_config - OpenSSH SSH daemon configuration file
Allow Or Deny SSH Access To A Particular User Or Group In Linux - OSTechNix

質問 4：
Which of the following commands can be used to connect and interact with remote TCP network services?
(Choose two.)
A. nc
B. cat
C. nettalk
D. telnet
E. netmap
正解：A,D
解説: (Pass4Test メンバーにのみ表示されます)

質問 5：
What option for BIND is required in the global options to disable recursive queries on the DNS server by default?
A. recursion {disabled; };
B. recursion no;
C. allow-recursive-query (none; );
D. allow-recursive-query off;
E. recursion {none; };
正解：B
解説: (Pass4Test メンバーにのみ表示されます)

質問 6：
Which option in the Postfix configuration makes Postfix pass email to external destinations to another SMTP-server?
(Specify ONLY the option name without any values.)
正解：
relayhost
Explanation:
The relayhost parameter in the Postfix configuration file (/etc/postfix/main.cf) specifies the hostname or IP address of an external SMTP server that will handle the outgoing emails for Postfix. This server is also known as a smarthost or a relayhost. By using a relayhost, Postfix can delegate the responsibility of delivering emails to remote destinations to another server that may have better network connectivity, security, or reputation. A relayhost can also provide authentication, encryption, or filtering services for Postfix. References:
Postfix Standard Configuration Examples
How to configure Postfix relayhost (smarthost) to send eMail using an external smptd

質問 7：
Which OpenLDAP client command can be used to change the password for an LDAP entry?
(Specify ONLY the command without any path or parameters.)
正解：
ldappasswd
Explanation:
The ldappasswd command is an OpenLDAP client tool that can be used to change the password for an LDAP entry. It can be used to change the password of the user who is binding to the LDAP server, or the password of another user if the bind user has sufficient privileges. The ldappasswd command requires the user to specify the LDAP server location, the bind DN and password, the old password, and the new password. The old and new passwords can be given on the command line, through prompts, or from files. The ldappasswd command can also use SASL authentication mechanisms instead of simple authentication. The ldappasswd command follows the general syntax of:
ldappasswd [options] [user]
where user is the DN of the entry whose password is to be changed. If omitted, the bind DN is used.
References:
LPIC-2 Exam 202 Objectives, Objective 207.3: LDAP Operations
How To Change Account Passwords on an OpenLDAP Server, DigitalOcean
ldappasswd: change the password of an LDAP entry, openldap-clients Manual Page How To Change an OpenLDAP Password, Tyler's Guides

質問 8：
In a BIND zone file, what does the @ character indicate?
A. It's the name of the zone as defined in the zone statement in named.conf
B. It's the fully qualified host name of the DNS server
C. It's an alias for the e-mail address of the zone master
D. It's used to create an alias between two CNAME entries
正解：A
解説: (Pass4Test メンバーにのみ表示されます)