Refresh LX0-104: Actualtests real Q&A from 51 to 60

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Q51. CORRECT TEXT - (Topic 4) 

Which command, available with all MTAs, is used to list the contents of the MTA's mail queue? (Specify ONLY the command without any path or parameters.) 

Answer: mailq, /usr/bin/mailq, sendmail -bp, /usr/sbin/sendmail -bp, /usr/lib/sendmail -bp, sendmail, /usr/sbin/sendmail, /usr/lib/sendmail 


Q52. - (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:


Q53. CORRECT TEXT - (Topic 4) 

After adding a new email alias to the configuration, which command must be run in order to ensure the MTA knows about it? (Specify the command without any path but including all required parameters.) 

Answer: newaliases, sendmail -bi 


Q54. - (Topic 4) 

What is the purpose of the command mailq? 

A. It fetches new emails from a remote server using POP3 or IMAP. 

B. It is a multi-user mailing list manager. 

C. It is a proprietary tool contained only in the qmail MTA. 

D. It queries the mail queue of the local MTA. 

E. It is a command-line based tool for reading and writing emails. 

Answer:


Q55. - (Topic 5) 

Which of the following programs can be used to determine the routing path to a given destination? 

A. dig 

B. netstat 

C. ping 

D. route 

E. traceroute 

Answer:


Q56. - (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:


Q57. - (Topic 4) 

Which of the following parameters are used for journalctl to limit the time frame of the output? (Choose TWO correct answers.) 

A. --from= 

B. --since= 

C. --until= 

D. --upto= 

E. --date= 

Answer: B,C 


Q58. - (Topic 1) 

Which of the following commands puts the output of the command date into the shell variable mydate? 

A. mydate="$(date)" 

B. mydate="exec date" 

C. mydate="$((date))" 

D. mydate="date" 

E. mydate="${date}" 

Answer:


Q59. CORRECT TEXT - (Topic 5) 

Which command is used to set the hostname of the local system? (Specify ONLY the command without any path or parameters.) 

Answer: hostname 


Q60. CORRECT TEXT - (Topic 3) 

In which file, if present, must all users be listed that are allowed to use the cron scheduling system? (Specify the full name of the file, including path.) 

Answer: /etc/cron.allow