LPI 102-500 Rapidshare 2021

NEW QUESTION 1

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

NEW QUESTION 2

An administrator wants to determine the geometry of a particular window in X, so she issues the_____ -metric command and then clicks on the window.

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
/usr/bin/xwininfo, xwininfo

NEW QUESTION 3

With IPv6, how many bits have been used for the interface identifier of an unicast address? (Specify the number using digits only.)

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
64

NEW QUESTION 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.)

• A. Mastered
• B. Not Mastered

Answer: A

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

NEW QUESTION 5

On a regular users workstation the route command takes a long time before printing out the routing table. Which of the following errors does that indicate?

• A. The local routing information may be corrupted and must be re-validated using a routing protocol.
• B. One of the routers in the routing table is not available which causes the automatic router failure detection mechanism (ARF-D) to wait for a timeout.
• C. There may accidentally be more than one default router in which case a default router election has to be done on the network in order to choose one router as the default.
• D. DNS resolution may not be working as route by default tries to resolve names of routers and destinations and may run into a timeout.

Answer: D

NEW QUESTION 6

Which configuration file would be edited to change default options for the OpenSSH server?

• A. /etc/ssh/sshd_config
• B. /etc/ssh/ssh
• C. /etc/ssh/server
• D. /etc/ssh/ssh_config
• E. /etc/ssh/ssh_server

Answer: A

NEW QUESTION 7

After configuring printing on a Linux server, the administrator sends a test file to one of the printers and it fails to print. What command can be used to display the status of the printer's queue? (Specify ONLY the command without any path or parameters.)

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
lpq, /usr/bin/lpq, lpstat, /usr/bin/lpstat

NEW QUESTION 8

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

NEW QUESTION 9

Which option in the /etc/ntp.conf file specifies an external NTP source to be queried for time information? (Specify ONLY the option without any values or parameters.)

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
server

NEW QUESTION 10

Which character in the password field of /etc/passwd is used to indicate that the encrypted password is stored in /etc/shadow?

• A. *
• B. -
• C. s
• D. x

Answer: D

NEW QUESTION 11

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

NEW QUESTION 12

What is NOT contained in the locale setting of the operating system?

• A. currency symbol
• B. language
• C. timezone
• D. thousands separator

Answer: C

NEW QUESTION 13

What is the default name of the configuration file for the Xorg X11 server? (Specify the file name only without any path.)

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
xorg.conf

NEW QUESTION 14

Of the ways listed, which is the best way to temporarily suspend a single user's ability to interactively login?

• A. Add the user name to /etc/nologin.
• B. Change the user's password.
• C. Change the user name in /etc/passwd.
• D. Use change to expire the user account.
• E. Place the command logout in the user's profile.

Answer: D

NEW QUESTION 15

Which of the following SQL queries counts the number of occurrences for each value of the field order_type in the table orders?

• A. SELECT order_type,COUNT(*) FROM orders WHERE order_type=order_type;
• B. SELECT order_type,COUNT(*) FROM orders GROUP BY order_type;
• C. COUNT(SELECT order_type FROM orders);
• D. SELECT COUNT(*) FROM orders ORDER BY order_type;
• E. SELECT AUTO_COUNT FROM orders COUNT order_type;

Answer: B

NEW QUESTION 16

Which command can be used to investigate the properties for a particular window in X by clicking that window? (Specify ONLY the command without any path or parameters.)

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
/usr/bin/xwininfo, xwininfo

NEW QUESTION 17

Which of the following words is used to restrict the records that are returned from a SELECT SQL query based on a supplied criteria for the values in the records?

• A. CASE
• B. FROM
• C. WHERE
• D. IF

Answer: C

NEW QUESTION 18

Which of the following lines are valid in the file /etc/hosts? (Choose TWO correct answers.)

• A. 2001:db8::15 www.example.com www
• B. www.example.com www 203.0.13.15
• C. 203.0.113.15 www.example.com www
• D. www.example.com,www 203.0.13.15,2001:db8::15
• E. 2003.0.113.15,2001:db8::15 www.example.com www

Answer: AC

NEW QUESTION 19

Which of the following configuration files should be modified to set default shell variables for all users?

• A. /etc/bashrc
• B. /etc/profile
• C. ~/.bash_profile
• D. /etc/.bashrc

Answer: B

NEW QUESTION 20

Why is the xhost program considered dangerous to use?

• A. It makes it difficult to uniquely identify a computer on the network.
• B. It allows easy access to your X server by other users.
• C. It logs sensitive information to syslog.
• D. It makes your computer share network resources without any authentication.
• E. It is a graphical DNS tool with known exploits.

Answer: B

NEW QUESTION 21

What command will display the group names and GIDs to which a user belongs? (Provide only the command name with or without path information)

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
id, /usr/bin/id

NEW QUESTION 22

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

NEW QUESTION 23

Which of the following are commonly used Mail Transfer Agent (MTA) applications? (Choose THREE correct answers.)

• A. Postfix
• B. Procmail
• C. Sendmail
• D. Exim
• E. SMTPd

Answer: ACD

NEW QUESTION 24

Which command is used to add an empty group to the system? (Specify ONLY the command without any path or parameters.)

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
groupadd, /usr/sbin/groupadd

NEW QUESTION 25

Which of the following steps prevents a user from obtaining an interactive login session?

• A. Run the command chsh -s /bin/false with the user name.
• B. Set the UID for the user to 0.
• C. Remove the user from the group staff.
• D. Add the user to /etc/noaccess.
• E. Create a .nologin file in the user's home directory.

Answer: A

NEW QUESTION 26
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