Improved 102-500 Training Materials 2021

NEW QUESTION 1

You are looking into a new script you received from your senior administrator. In the very first line you notice a #! followed by a file path. This indicates that:

• A. The file at that location was used to make the script.
• B. This script provides identical functionality as the file at that location.
• C. This script will self-extract into a file at that location.
• D. The program at that location will be used to process the script.

Answer: D

NEW QUESTION 2

Which command can be used to delete a group from a Linux system?

• A. groupdel
• B. groupmod
• C. groups
• D. groupedit

Answer: A

NEW QUESTION 3

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

NEW QUESTION 4

Which of the following is observed and corrected by a NTP client?

• A. The skew in time between the system clock and the hardware clock.
• B. The skew in time between the system clock and the reference clock.
• C. Changes in the time zone of the current computer's location.
• D. Adjustments needed to support Daylight Saving Time.

Answer: B

NEW QUESTION 5

For accessibility assistance, which of the following programs is an on-screen keyboard?

• A. xkb
• B. atkb
• C. GOK
• D. xOSK

Answer: C

NEW QUESTION 6
What is true regarding a default route?

• A. The default route is always used firs
• B. When the default route is not available more specific routes are tried.
• C. When a default route is set, all other routes are disabled until the default route is deleted.
• D. The default route is only used if there is not a more specific route to a destination host or network.
• E. Without a default route, no network communication even in directly attached networks is possible.

Answer: C

NEW QUESTION 7

What is the purpose of the nsswitch.conf file?

• A. It is used to configure where the C library looks for system information such as host names and user passwords.
• B. It is used to configure network protocol port numbers such as for HTTP or SMTP.
• C. It is used to configure LDAP authentication services for the local system.
• D. It is used to configure which network services will be turned on during the next system boot.

Answer: A

NEW QUESTION 8

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

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
hostname

NEW QUESTION 9

Given the following routing table:

How would an outgoing packet to the destination 192.168.2.150 be handled?

• A. It would be passed to the default router 192.168.178.1 on wlan0.
• B. It would be directly transmitted on the device eth0.
• C. It would be passed to the default router 255.255.255.0 on eth0.
• D. It would be directly transmitted on the device wlan0.
• E. It would be passed to the router 192.168.1.1 on eth0.

Answer: E

NEW QUESTION 10

What is the command to delete the default gateway from the system IP routing table? (Choose TWO correct answers.)

• A. route del default
• B. ifconfig unset default
• C. netstat -r default
• D. ip route del default
• E. sysctl ipv4.default_gw=0

Answer: AD

NEW QUESTION 11

Which of the following files assigns a user to its primary group?

• A. /etc/pgroup
• B. /etc/shadow
• C. /etc/group
• D. /etc/passwd
• E. /etc/gshadow

Answer: D

NEW QUESTION 12

Which of the following crontab entries will execute myscript at 30 minutes past every hour on Sundays?

• A. 0 * * * 30 myscript
• B. 30 * * * 6 myscript
• C. 30 0 * * 0 myscript
• D. 30 0-23 * * 0 myscript
• E. 0 0-23 * * 30 myscript

Answer: D

NEW QUESTION 13

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 14

With X11 forwarding in ssh, what environment variable is automatically set in the remote host shell that is not set when X11 forwarding is not enabled? (Specify only the environment variable without any additional commands or values.)

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
DISPLAY, $DISPLAY

NEW QUESTION 15

The X11 configuration file xorg.conf is grouped into sections. How is the content of the section SectionName associated with that section?

• A. It is placed in curly brackets as in Section SectionName { ... }.
• B. It is placed between a line containing Section "SectionName" and a line containing EndSection.
• C. It is placed between the tags <Section name="SectionName"> and </Section>
• D. It is placed after the row [SectionName].
• E. It is placed after an initial unindented Section "SectionName" and must be indented by exactly one tab character.

Answer: B

NEW QUESTION 16

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: E

NEW QUESTION 17

Which of the following commands shows the current color depth of the X Server?

• A. xcd
• B. xcdepth
• C. xwininfo
• D. xcolordepth
• E. cat /etc/X11

Answer: C

NEW QUESTION 18

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 19

A user was not given permission to use the CRON scheduling system. What file needs to be modified to provide that access? (Please specify the full path to the file)

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
/etc/cron.allow

NEW QUESTION 20

What is the name of the simple graphical login manager that comes with a vanilla X11 installation? (Specify ONLY the command without any path or parameters.)

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
xdm

NEW QUESTION 21

Which of the following is a valid IPv6 address?

• A. 2001:db8:3241::1
• B. 2001::db8:4581::1
• C. 2001:db8:0g41::1
• D. 2001%db8%9990%%1
• E. 2001.db8.819f..1

Answer: A

NEW QUESTION 22

What command displays all aliases defined in the current shell? (Specify the command without any path information)

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
alias, alias -p

NEW QUESTION 23
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