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2021 Mar LX0-104 exams
Q1. - (Topic 6)
What is a purpose of an SSH host key?
A. It must be sent by any SSH client in addition to a user key in order to identify the client's host.
B. It provides the server's identity information to connecting SSH clients.
C. It is the root key by which all user SSH keys must be signed.
D. It authenticates any user that logs into a remote machine from the key's host.
E. It is used by system services like cron, syslog or a backup job to automatically connect to remote hosts.
Answer: B
Q2. - (Topic 6)
Which of the following commands preloads and manages keys that are used for automatic authentication while logging in to other machines using SSH?
A. sshd
B. ssh-agent
C. ssh-keygen
D. ssh-add
Answer: B
Q3. - (Topic 6)
Which of the following programs uses the hosts.allow file to perform its main task of checking for access control restrictions to system services?
A. tcpd
B. inetd
C. fingerd
D. mountd
E. xinetd
Answer: A
Q4. - (Topic 2)
How is a display manager started?
A. It is started by a user using the command startx.
B. It is started like any other system service by the init system.
C. It is started by inetd when a remote hosts connects to the X11 port.
D. It is started automatically when a X11 user logs in to the system console.
Answer: B
Q5. - (Topic 4)
Which of the following tasks can be accomplished using the command date? (Choose TWO correct answers.)
A. Synchronize the hardware and system clocks.
B. Output date and time in different formats.
C. Set the system clock.
D. Set the hardware clock.
E. Update the time via NTP.
Answer: B,C
Renewal LX0-104 testing engine:
Q6. CORRECT TEXT - (Topic 5)
How many IP-addresses can be used for unique hosts inside the IPv4 subnet 192.168.2.128/28? (Specify the number only without any additional information.)
Answer: 14
Q7. - (Topic 1)
How can the existing environment variable FOOBAR be suppressed for the execution of the script./myscript only?
A. unset -v FOOBAR;./myscript
B. set -a FOOBAR="";./myscript
C. env -u FOOBAR./myscript
D. env -i FOOBAR./myscript
Answer: C
Q8. CORRECT TEXT - (Topic 6)
Which file lists which users can execute commands using sudo? (Specify the full name of the file, including path.)
Answer: /etc/sudoers
Q9. - (Topic 6)
Which command is used to set restrictions on the size of a core file that is created for a user when a program crashes?
A. core
B. edquota
C. ulimit
D. quota
Answer: C
Q10. - (Topic 4)
What is true regarding the command sendmail?
A. With any MTA, the sendmail command must be run periodically by the cron daemon.
B. All MTAs, including Postfix and Exim, provide a sendmail command.
C. The sendmail command prints the MTAs queue history of which mails have been sent successfully.
D. It is only available when the sendmail MTA is installed.
Answer: B