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Lpi 202-450 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: File Sharing	13%	- Samba configuration 1. User authentication 2. SMB/CIFS shares 3. Access permissions - NFS configuration 1. Client access control 2. Exported file systems
Topic 2: Email Services	14%	- Mail Transfer Agent configuration 1. SMTP operation 2. Postfix configuration - Email security 1. Spam filtering 2. TLS encryption - Mail delivery and access 1. POP3 and IMAP services 2. Dovecot configuration
Topic 3: Web Services	11%	- Apache HTTP Server configuration 1. Modules and directives 2. Logging 3. Virtual hosts - HTTPS configuration 1. SSL/TLS certificates 2. Encryption settings - Nginx configuration 1. Load balancing 2. Reverse proxy
Topic 4: Domain Name Server	8%	- Secure DNS server 1. Access control 2. DNSSEC concepts - Create and maintain DNS zones 1. Forward zones 2. Reverse zones 3. Delegation - Basic DNS server configuration 1. Zone files 2. BIND configuration files 3. Resource records
Topic 5: System Security	12%	- VPN technologies 1. OpenVPN 2. IPSec concepts - Network security 1. Firewall configuration 2. Packet filtering - Host security 1. OpenSSH configuration 2. TCP Wrappers
Topic 6: Network Client Management	9%	- DHCP configuration 1. DHCP server setup 2. Dynamic address assignment - LDAP client usage 1. Directory queries 2. Authentication integration

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Lpi LPIC-2 - Exam 202 (part 2 of 2), version 4.5 Sample Questions (Q112-Q117):

NEW QUESTION # 112
Select the alternative that shows the correct way to disable a user login for all users except root.

A. The use of the pam_nologin module along with the /etc/nologin configuration file.
B. The use of the pam_block module along with the /etc/login configuration file.
C. The use of the pam_deny module along with the /etc/deny configuration file.
D. The use of the pam_pwdb module along with the /etc/pwdv.conf configuration file.

Answer: A

NEW QUESTION # 113
In a PAM configuration file, which of the following is true about the required control flag?

A. The success of the module is needed for the module-type facility to succeed. However, all remaining modules of the same type will be invoked
B. The module is not critical and whether it returns success or failure is not important
C. If the module returns success, no more modules of the same type will be invoked
D. The success of the module is needed for the module-type facility to succeed. If it returns a failure, control is returned to the calling application
E. If the module returns failure, no more modules of the same type will be invoked

Answer: A

Explanation:
Explanation
The required control flag means that the PAM module is essential for the authentication process. If the module fails, the whole authentication fails. However, unlike the requisite control flag, the required control flag does not stop the execution of the remaining modules of the same type. This allows the user to receive feedback from all the modules, such as password expiration warnings or account lockout messages.
References:
Linux Professional Institute LPIC-2 Exam 202-450 Objectives, Topic 211: System Security, Objective
211.2: Configuring PAM, Weight: 5
PAM Control Flags, System Administration Guide: Security Services, Oracle
10.2. About PAM Configuration Files, System-Level Authentication Guide, Red Hat Enterprise Linux 7, Red Hat Customer Portal
4. The Linux-PAM configuration file, SCO Group

NEW QUESTION # 114
The following Apache HTTPD configuration has been set up to create a virtual host available at www.example.com and www2.example.com:

Even though Apache HTTPD correctly processed the configuration file, requests to both names are not handled correctly. What should be changed in order to ensure correct operations?

A. The configuration must be split into two VirtualHost sections since each virtual host may only have one name.
B. Both virtual host names have to be placed as comma separated values in one ServerName declaration.
C. Both virtual host names have to be mentioned in the opening VirtualHost tag.
D. The port mentioned in opening VirtualHost tag has to be appended to the ServerName declaration's values.
E. Only one Server name declaration may exist, but additional names can be declared in ServerAlias options.

Answer: B

NEW QUESTION # 115
A user requests a "hidden" Samba share, named confidential, similar to the Windows Administration Share. How can this be configured?

A. Option C
B. Option B
C. Option E
D. Option D
E. Option A

Answer: C

NEW QUESTION # 116
For what purpose is TCP/IP stack fingerprinting used by nmap?

A. It is used to filter out responses from specific servers.
B. It is used to identify duplicate responses from the same remote server.
C. It is used to uniquely identify servers on the network for forensics.
D. It is used to determine the remote operating system.
E. It is used to masquerade the responses of remote servers.

Answer: D

Explanation:
Explanation
TCP/IP stack fingerprinting is a technique that allows nmap to remotely detect the characteristics of a TCP/IP stack implementation on a target host. By sending a series of probes (such as TCP and UDP packets) and analyzing the responses, nmap can infer the operating system (OS) of the target host based on a database of known OS fingerprints. Each OS has a unique way of setting certain parameters and flags in the TCP/IP headers, such as the initial packet size, the initial TTL, the window size, the max segment size, the window scaling value, and the "don't fragment", "sackOK", and "nop" flags. These values can be combined to form a signature or a fingerprint for the target host, which can then be compared to the nmap-os-db database that contains more than 2,600 OS fingerprints. If there is a match, nmap will print out the OS details, such as the name, the version, and the vendor. If there is no match, nmap will print out a message asking the user to submit the fingerprint to the nmap project for further analysis.
TCP/IP stack fingerprinting is useful for several purposes, such as network mapping, security auditing, vulnerability scanning, and penetration testing. By knowing the OS of the target host, nmap can tailor its scanning techniques and exploit the weaknesses of the specific OS. TCP/IP stack fingerprinting can also help identify rogue or unauthorized devices on a network, or detect OS spoofing attempts by the target host.
References:
OS Detection | Nmap Network Scanning
TCP/IP stack fingerprinting - Wikipedia
Cybersecurity | Nmap | OS Detection | Codecademy

NEW QUESTION # 117
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