최신 102-500 Deutsch 무료덤프 - Lpi LPIC-1 Exam 102, Part 2 of 2, version 5.0 (102-500 Deutsch Version)
Welcher Befehl aktiviert eine Netzwerkschnittstelle gemäß der distributionsspezifischen Konfiguration, wie etwa /etc/network/interfaces oder /etc/sysconflg/network-scripts/ifcfg-etho? (Geben Sie NUR den Befehl ohne Pfad oder Parameter an.)
정답:
UP
Nach dem Bearbeiten der TCP-Wrapper-Konfiguration, um bestimmten Hosts Zugriff auf einen Dienst zu gewähren. Wann werden diese Änderungen wirksam?
정답: D
Was ist mit Network Manager auf einem Linux-System, das die Mechanismen seiner Distribution zum Konfigurieren von Netzwerkschnittstellen verwendet? (Wählen Sie ZWEI richtige Antworten.)
정답: B,D
Jeder Eintrag in einer Crontab muss mit welchem Zeichen enden?
정답: B
설명: (DumpTOP 회원만 볼 수 있음)
Welche der folgenden Optionen in der Chrony-Konfigurationsdatei definieren Remote-Lime-Quellen? (Wählen Sie ZWEI richtige Antworten.)
정답: A,E
Welcher Befehl macht die Shell-Variable mit dem Namen VARIABLE für Sub-Shells sichtbar?
정답: E
설명: (DumpTOP 회원만 볼 수 있음)
Welches der folgenden Programme ist eine Bildschirmtastatur für die Unterstützung der Barrierefreiheit?
정답: D
설명: (DumpTOP 회원만 볼 수 있음)
Was ist der Zweck von TCP-Wrapper?
정답: C
설명: (DumpTOP 회원만 볼 수 있음)
Einem Benutzer wurde keine Berechtigung zur Verwendung des CRON-Scheduling-Systems erteilt. Welche Datei muss geändert werden, um diesen Zugriff zu ermöglichen? (Bitte geben Sie den vollständigen Pfad zur Datei an)
정답:
etccronallow
Explanation:
The /etc/cron.d/cron.allow file is a text file that contains the names of the users who are allowed to use the crontab command to create and manage their own cron jobs12. If this file exists, only the users listed in it can use the crontab command, and all other users are denied access12. If this file does not exist, the /etc/cron.d/cron.deny file is checked to see which users are not allowed to use the crontab command12. If neither file exists, only the root user can use the crontab command12.
To modify the /etc/cron.d/cron.allow file, the root user can use any text editor to add or remove the names of the users who will be allowed to use the crontab command1234. For example, to allow the user frank to use the crontab command, the root user can append the name frank to the /etc/cron.d/cron.allow file1234. The root user must always be included in this file, otherwise the superuser access to the crontab command will be denied4.
Explanation:
The /etc/cron.d/cron.allow file is a text file that contains the names of the users who are allowed to use the crontab command to create and manage their own cron jobs12. If this file exists, only the users listed in it can use the crontab command, and all other users are denied access12. If this file does not exist, the /etc/cron.d/cron.deny file is checked to see which users are not allowed to use the crontab command12. If neither file exists, only the root user can use the crontab command12.
To modify the /etc/cron.d/cron.allow file, the root user can use any text editor to add or remove the names of the users who will be allowed to use the crontab command1234. For example, to allow the user frank to use the crontab command, the root user can append the name frank to the /etc/cron.d/cron.allow file1234. The root user must always be included in this file, otherwise the superuser access to the crontab command will be denied4.
Welcher der aufgeführten Wege ist der beste Weg, um die interaktive Anmeldung eines einzelnen Benutzers vorübergehend zu unterbrechen?
정답: D
설명: (DumpTOP 회원만 볼 수 있음)
Welche von XDM verwendete Datei gibt das Standard-Hintergrundbild an?
정답: B
설명: (DumpTOP 회원만 볼 수 있음)
Welche Datei enthält eine Reihe von Diensten und Hosts, die über ein TCP-Wrapper-Programm wie tcpd eine Verbindung zum Server herstellen dürfen? (Geben Sie den vollständigen Namen der Datei einschließlich Pfad an.)https://lh3.googleusercontent.com/-5cd-clmKnbk/AAAAAAAAAAAI/AAAAAAAAAADM/-SXesH19Ido/s46-ck-no/photo.jpg
정답:
etchostsallow
Explanation:
The /etc/hosts.allow file contains a set of rules that specify which services and hosts are allowed to connect to the server by going through a TCP Wrapper program such as tcpd. TCP Wrappers are a security mechanism that can filter incoming requests based on the source address, destination address, and service name. TCP Wrappers can also perform logging, redirection, and execution of commands based on the rules.
The /etc/hosts.allow file has the following format:
service_list : host_list [ : option_list ]
The service_list is a comma-separated list of service names, such as sshd, telnet, or ftp. The host_list is a comma-separated list of host names, IP addresses, or network masks that are allowed to access the services. The option_list is an optional list of keywords that can modify the behavior of the rule, such as twist, spawn, deny, or allow.
For example, the following rule in /etc/hosts.allow allows ssh access from any host in the 192.168.1.0/24 network, and logs the connection attempt:
sshd : 192.168.1.0/255.255.255.0 : spawn /bin/echo %a from %h attempted to access %d >> /var/log/sshd.log The /etc/hosts.allow file is processed before the /etc/hosts.deny file, which contains the rules for denying access to the server. If a request matches a rule in /etc/hosts.allow, it is granted access and the processing stops. If it does not match any rule in /etc/hosts.allow, it is checked against the rules in /etc/hosts.deny. If it matches a rule in /etc/hosts.deny, it is denied access and the processing stops. If it does not match any rule in either file, it is granted access by default.
Reference:
LPI 102-500 Exam Objectives, Topic 110.3: Implement host security
LPI 102-500 Study Guide, Chapter 10: Securing Your System, Section 10.3: TCP Wrappers hosts.allow man page
Explanation:
The /etc/hosts.allow file contains a set of rules that specify which services and hosts are allowed to connect to the server by going through a TCP Wrapper program such as tcpd. TCP Wrappers are a security mechanism that can filter incoming requests based on the source address, destination address, and service name. TCP Wrappers can also perform logging, redirection, and execution of commands based on the rules.
The /etc/hosts.allow file has the following format:
service_list : host_list [ : option_list ]
The service_list is a comma-separated list of service names, such as sshd, telnet, or ftp. The host_list is a comma-separated list of host names, IP addresses, or network masks that are allowed to access the services. The option_list is an optional list of keywords that can modify the behavior of the rule, such as twist, spawn, deny, or allow.
For example, the following rule in /etc/hosts.allow allows ssh access from any host in the 192.168.1.0/24 network, and logs the connection attempt:
sshd : 192.168.1.0/255.255.255.0 : spawn /bin/echo %a from %h attempted to access %d >> /var/log/sshd.log The /etc/hosts.allow file is processed before the /etc/hosts.deny file, which contains the rules for denying access to the server. If a request matches a rule in /etc/hosts.allow, it is granted access and the processing stops. If it does not match any rule in /etc/hosts.allow, it is checked against the rules in /etc/hosts.deny. If it matches a rule in /etc/hosts.deny, it is denied access and the processing stops. If it does not match any rule in either file, it is granted access by default.
Reference:
LPI 102-500 Exam Objectives, Topic 110.3: Implement host security
LPI 102-500 Study Guide, Chapter 10: Securing Your System, Section 10.3: TCP Wrappers hosts.allow man page