検証済みの202-450テスト問題集と解答で正確な120問
Lpi 202-450テストエンジンPDFで全問無料問題集
Lpi 202-450試験はLPIC-2認定の一部であり、IT業界でスキルセットを拡大してキャリアアップしたい上級Linuxプロフェッショナル向けに設計されています。この試験はLPIC-2認定プログラムの第二部であり、ファイルシステムとストレージ、ネットワーク構成、ドメインネームシステム、電子メールサービス、Webサービス、システムセキュリティなどのトピックにおける候補者の知識とスキルを試験するために設計されています。
Lpi 202-450（LPIC-2 Exam 202、Part 2 of 2、バージョン4.5）は、LinuxオペレーティングシステムにおけるITプロフェッショナルの知識とスキルをテストする認定試験です。この試験は、ネットワーク、セキュリティ、ストレージを含むLinuxシステムの管理とトラブルシューティングの能力を評価するために設計されています。LPIC-2認定は、Linux Professional Instituteによって提供される2番目の認定レベルであり、Linuxプロフェッショナルのキャリアにおいて重要なマイルストーンです。
質問 # 29
Which of the following statements is INCORRECT regarding the LDIF file format?
- A. The LDIF file accepts any type of file encoding.
- B. If an attribute contains binary data, some specific configurations must be made for this entry.
- C. It contains a dn line that indicates where the attributes listed in the following lines of the file must be added.
- D. In the file, a blank line separates one entry from another one.
正解：A
解説：
Explanation
The LDIF file format does not accept any type of file encoding. It requires the file to be encoded in UTF-8, which is a Unicode encoding that supports all characters and languages. If the file contains non-UTF-8 characters, it may cause errors or data loss when importing or exporting LDIF data. Therefore, it is important to ensure that the LDIF file is encoded in UTF-8 before using it with LDAP tools or servers. References:
LDIF File (What It Is and How to Open One) - Lifewire
RFC 2849 - The LDAP Data Interchange Format (LDIF) - Technical Specification
質問 # 30
Which option within the ISC DHCPD configuration file defines the IPv4 DNS server address(es) to be sent to the DHCP clients?
- A. domain-server
- B. servers
- C. domain-name-servers
- D. name-server
正解：C
質問 # 31
There is a restricted area in a site hosted by Apache HTTPD, which requires users to authenticate against the file /srv/www/security/site*passwd.
Which command is used to CHANGE the password of existing users, without losing data, when Basic authentication is being used?
- A. htpasswd -c /srv/www/security/site*passwd user
- B. htpasswd -n /srv/www/security/site*passwd user
- C. htpasswd -D /srv/www/security/site*passwd user
- D. htpasswd /srv/www/security/site*passwd user
正解：A
質問 # 32
A company is transitioning to a new DNS domain name and wants to accept e-mail for both domains for all of its users on a Postfix server.
Which configuration option should be updated to accomplish this?
- A. mylocations
- B. mydomain
- C. myhosts
- D. mydestination
- E. mydomains
正解：D
解説：
Explanation
質問 # 33
What word is missing from the following excerpt of a named.conf file?
- A. net
- B. acl
- C. list
- D. group
- E. networks
正解：B
質問 # 34
Using its standard configuration, how does fail2ban block offending SSH clients?
- A. By modifying and adjusting the TCP Wrapper configuration for SSHD.
- B. By creating and maintaining netfilter rules.
- C. By creating null routes that drop any answer packets sent to the client.
- D. By rejecting connections due to its role as a proxy in front of SSHD.
- E. By modifying and adjusting the SSHD configuration.
正解：E
質問 # 35
To allow X connections to be forwarded from or through an SSH server, what configuration keyword must be set to yes in the sshd configuration file?
- A. XllForwarding
- B. AllowForwarding
- C. XllForwardingAllow
- D. ForwardingAllow
正解：A
解説：
Explanation
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
質問 # 36
Which FTP names are recognized as anonymous users in vsftp when the option anonymous_enableis set to yes in the configuration files? (Choose two.)
- A. guest
- B. In the described configuration, any username which neither belongs to an existing user nor has another special meaning is treated as anonymous user.
- C. nobody
- D. anonymous
- E. ftp
正解：D、E
解説：
Explanation/Reference:
Reference: http://vsftpd.beasts.org/vsftpd_conf.html#lbAE
質問 # 37
FILL BLANK
What is the name of the root element of the LDAP tree holding the configuration of an OpenLDAP server that is using directory based configuration? (Specify ONLY the element's name without any additional information.)
正解：
解説：
slapd
質問 # 38
Which of the following services belongs to NFSv4 and does not exist in NFSv3?
- A. rpc.statd
- B. nfsd
- C. rpc.idmapd
- D. rpc.mountd
正解：C
解説：
Explanation/Reference: https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/5/html/ deployment_guide/ch-nfs
質問 # 39
Which of the following information has to be submitted to a certification authority in order to request a web server certificate?
- A. The list of ciphers supported by the web server.
- B. The web server's private key.
- C. The IP address of the web server.
- D. The certificate signing request.
- E. The web server's SSL configuration file.
正解：D
解説：
Explanation/Reference:
Reference: https://help.ubuntu.com/lts/serverguide/certificates-and-security.html.en
質問 # 40
Which attitude of an object in LDAP defines which other attributes can be set for the object?
(Specify ONLY the attribute name without any values.)
正解：
解説：
class
質問 # 41
Which of the following values can be used in the OpenLDAP attribute olcBackendfor any object of the class olcBackendConfigto specify a backend? (Choose three.)
- A. passwd
- B. text
- C. ldap
- D. xml
- E. bdb
正解：B、C、E
解説：
Explanation/Reference:
質問 # 42
Which directive in a Nginx server configuration block defines the TCP ports on which the virtual host will be available, and which protocols it will use?
(Specify ONLY the option name without any values.)
正解：
解説：
listen
質問 # 43
Which of the following PAM modules allows the system administrator to use an arbitrary file containing a list of user and group names with restrictions on the system resources available to them?
- A. pam_listfile
- B. pam_unix
- C. pam_filter
- D. pam_limits
正解：A
解説：
Explanation
The pam_listfile module is a PAM module that allows the system administrator to use an arbitrary file containing a list of user and group names with restrictions on the system resources available to them. The module can be used to deny or allow access to services based on the contents of the file. The file can contain items such as usernames, group names, terminal names, remote host names, remote user names, or shell names. The module can be configured to match the item against the file and take the appropriate action, such as allowing or denying access, or ignoring the request. The module can also be restricted to apply only to a specific user or group class. The file should be a plain text file with one item per line and not be world writable12.
References:
pam_listfile(8) - Linux man page: A manual page for the pam_listfile module, which explains its syntax, options, and examples.
pam_listfile(8) - Linux manual page - man7.org: Another manual page for the pam_listfile module, which provides similar information as the previous reference.
質問 # 44
On a Linux router, packet forwarding for IPv4 has been enabled. After a reboot, the machine no longer forwards IP packets from other hosts. The command:
echo 1 > /proc/sys/net/ipv4/ip_forward
temporarily resolves this issue.
Which one of the following options is the best way to ensure this setting is saved across system restarts?
- A. In /etc/rc.local add net.ipv4.ip_forward = 1
- B. Add echo 1 > /proc/sys/net/ipv4/ip_forward to the root user login script
- C. In /etc/sysct1.conf change net.ipv4.ip_forward to 1
- D. Add echo 1 > /proc/sys/net/ipv4/ip_forward to any user login script
- E. In /etc/sysconfig/iptables-config add ipv4.ip_forward = 1
正解：C
質問 # 45
To allow X connections to be forwarded from or through an SSH server, what configuration keyword must be set to yesin the sshdconfiguration file?
- A. XllForwarding
- B. AllowForwarding
- C. XllForwardingAllow
- D. ForwardingAllow
正解：A
解説：
Explanation/Reference:
Reference: https://help.ubuntu.com/community/SSH/OpenSSH/Configuring
質問 # 46
In order to protect a directory on an Apache HTTPD web server with a password, this configuration was added to an .htaccess file in the respective directory:
Furthermore, a file /var/www/dir/ .htpasswd was created with the following content:
usera:S3cr3t
Given that all these files were correctly processed by the web server processes, which of the following statements is true about requests to the directory?
- A. The browser prompts the visitor for a username and password but logins for usera do not seem to work
- B. The user usera can access the site using the password s3cr3t
- C. Accessing the directory as usera raises HTTP error code 442 (User Not Existent)
- D. The web server delivers the content of the directory without requesting authentication
- E. Requests are answered with HTTP error code 500 (Internal Server Error)
正解：B
質問 # 47
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