LX0-104 answers(11 to 20) for IT candidates: May 2017 Edition


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Q11. CORRECT TEXT - (Topic 5) 

What is the lowest numbered unprivileged TCP port? (Specify the number in digits only.) 

Answer: 1024 


Q12. - (Topic 3) 

What is true about the file /etc/localtime? 

A. It is a plain text file containing a string such as Europe/Berlin. 

B. It is created and maintained by the NTP service based on the geolocation of the system's IP address. 

C. It is a symlink to /sys/device/clock/ltime and always contains the current local time. 

D. It is either a symlink to or a copy of a timezone information file such as /usr/share/zoneinfo/Europe/Berlin. 

Answer:


Q13. CORRECT TEXT - (Topic 5) 

Which command, depending on its options, can display the open network connections, the routing tables, as well as network interface statistics. (Specify ONLY the command without any path or parameters.) 

Answer: netstat, /bin/netstat, ss, /usr/bin/ss 


Q14. - (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:


Q15. - (Topic 3) 

Each entry in a crontab must end with what character? 

A. Tab 

B. Space 

C. Backslash 

D. Newline 

Answer:


Q16. - (Topic 5) 

Which of the following tools used for DNS debugging, reports not only the response from the name server but also details about the query? 

A. dnsq 

B. dig 

C. hostname 

D. dnslookup 

E. zoneinfo 

Answer:


Q17. CORRECT TEXT - (Topic 3) 

Which environment variable should be set in order to change the time zone for the commands run from within the environment variable's scope? (Specify the variable name only.) 

Answer: TZ 


Q18. CORRECT TEXT - (Topic 1) 

What word is missing from the following SQL statement? 

insert into tablename ________(909, 'text'); 

(Please specify the missing word using lower-case letters only.) 

Answer: VALUES, values 


Q19. - (Topic 1) 

What output will the command seq 10 produce? 

A. A continuous stream of numbers increasing in increments of 10 until stopped. 

B. The numbers 1 through 10 with one number per line. 

C. The numbers 0 through 9 with one number per line. 

D. The number 10 to standard output. 

Answer:


Q20. - (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: