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New LPI 102-400 Exam Dumps Collection (Question 7 - Question 16)

Question No: 7

CORRECT TEXTWhich 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

Question No: 8

After issuing:

function myfunction { echo $1 $2 ; } in Bash, which output does: myfunction A B C

Produce?

A. A B

B. A B C

C. A C

D. B C

E. C B A

Answer: A

Question No: 9

CORRECT TEXTWhich 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

Question No: 10

Which of the following commands can be used to limit the amount of memory a user may use?

A. umask

B. usermod

C. ulimit

D. passwd

E. chage

Answer: C

Question No: 11

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

Answer: 1024

Question No: 12

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

Question No: 13

In case neither cron.allow nor cron.deny exist in /etc/, which of the following is true?

A. Without additional configuration, no users may have user specific crontabs.

B. Without additional configuration, all users may have user specific crontabs.

C. The cron daemon will refuse to start and report missing files in the system's logfile.

D. When a user creates a user specific crontab the system administrator must approve it explicitly.

Answer: A

Question No: 14

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

Answer: hostname

Question No: 15

What is true regarding TCP port 23?

A. Port 23 is the well known port for the telnet service which is a plain text protocol that should no longer be used.

B. Port 23 is the well known port for the SSH service which provides secure logins.

C. Port 23 is the well known port for the rlogin service which is SSL secured by default.

D. Port 23 is the well known port for the system login services which are encrypted when the user runs the starttls command in his login shell.

Answer: A

Question No: 16

CORRECT TEXTWhich port is the default server port for the HTTPS protocol? (Specify the port number using digits.)

Answer: 443

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