2022 Latest 102-500 DUMPS Q&As with Explanations Verified & Correct Answers
102-500 dumps Exam Material with 195 Questions
NEW QUESTION 81
What is true regarding the file ~/.forward?
- A. When configured correctly ~/.forward can be used to forward each incoming mail to one or more other recipients.
- B. Using ~/.forward, root may configure any email address whereas all other users may configure only their own addresses.
- C. By default, only ~/.forward files of users in the group mailq are processed while all other user's ~/
.forward files are ignored. - D. As ~/.forward is owned by the MTA and not writable by the user, it must be edited using the editaliases command.
- E. After editing ~/.forward the user must run newaliases to make the mail server aware of the changes.
Answer: A
NEW QUESTION 82
On a Linux workstation, the route command takes a long time before printing out the routing table. Which of the following errors does that indicate?
- A. 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.
- B. The Linux Kernel Routing Daemon (LKRD) is not running and should be started using its init script or systemd unit.
- C. 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.
- D. The local routing information may be corrupted and must be re-validated using a routing protocol.
- E. 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: E
NEW QUESTION 83
How many IP addresses can be used for unique hosts inside the IPv4 subnet 192.168.2.128/26?
- A. 0
- B. 1
- C. 2
- D. 3
- E. 4
Answer: E
NEW QUESTION 84
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. The program at that location will be used to process the script.
- C. This script provides identical functionality as the file at that location.
- D. This script will self-extract into a file at that location.
Answer: B
NEW QUESTION 85
Which of the following fields are available in the standard format of both the global /etc/crontab file as well as in user-specific crontabfiles? (Choose two.)
- A. Command
- B. Effective group ID
- C. Year
- D. Minute
- E. Username
Answer: B,D
Explanation:
Explanation/Reference:
NEW QUESTION 86
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:
Explanation:
newaliases, sendmail -bi
NEW QUESTION 87
Which of the following commands displays all environment and shell variables?
getargs
- A. lsshell
- B. ls
- C. lsenv
- D. env
Answer: A
NEW QUESTION 88
Which of the following states can NetworkManager show regarding the system's network connectivity? (Choose two.)
- A. firewalled
- B. login-required
- C. up
- D. full
- E. portal
Answer: D,E
NEW QUESTION 89
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 90
On a system running the KDE Display Manager, when is the /etc/kde4/kdm/Xreset script automatically executed?
- A. When X is restarted
- B. When X crashes
- C. When KDM starts
- D. When a user's X session exits
- E. When KDM crashes
Answer: D
NEW QUESTION 91
When the command echo $ outputs 1, which of the following statements is true?
- A. It is the exit value of the command executed immediately before echo.
- B. It is the process ID of the current shell.
- C. It is the exit value of the echo command.
- D. It is the process ID of the echo command.
Answer: A
NEW QUESTION 92
Which of the following commands sets the system's time zone to the Canadian Eastern Time?
- A. sysctl -w clock.tz='Canada/Eastern'
- B. tzconf /etc/localtime
- C. modprobe tz_ca_est
- D. ln -sf /usr/share/zoneinfo/Canada/Eastern /etc/localtime
- E. localegen -t -f /usr/share/zoneinfo/Canada/Eastern > /etc/locate.tz
Answer: D
NEW QUESTION 93
What is NOT contained in the locale setting of the operating system?
- A. currency symbol
- B. timezone
- C. language
- D. thousands separator
Answer: B
NEW QUESTION 94
Given the following routing table:
How would an outgoing packet to the destination 192.168.2.150 be handled?
- A. It would be directly transmitted on the device wlan0.
- B. It would be passed to the router 192.168.1.1 on eth0.
- C. It would be directly transmitted on the device eth0.
- D. It would be passed to the default router 192.168.178.1 on wlan0.
- E. It would be passed to the default router 255.255.255.0 on eth0.
Answer: B
NEW QUESTION 95
Which parameter must be passed to ifconfig to activate a previously inactive network interface? (Specify the parameter only without any command, path or additional options)
Answer:
Explanation:
up
NEW QUESTION 96
Which of the following is a valid IPv6 address?
- A. 2001.db8.819f..1
- B. 2001%db8%9990%%1
- C. 2001::db8:4581::1
- D. 2001:db8:3241::1
- E. 2001:db8:0g21::1
Answer: D
NEW QUESTION 97
Which of the following crontab entries will execute myscript at 30 minutes past every hour on Sundays?
- A. 30 * * * 6 myscript
- B. 30 0-23 * * 0 myscript
- C. 30 0 * * 0 myscript
- D. 0 * * * 30 myscript
- E. 0 0-23 * * 30 myscript
Answer: B
NEW QUESTION 98
FILL BLANK
Which directory holds configuration files for xinetd services? (Specify the full path to the directory.)
Answer:
Explanation:
/etc/xinetd.d/
NEW QUESTION 99
Which directory in /etc is used to keep a sample copy of files and directories for when a new user has a home directory created? (Please provide the full path)
Answer:
Explanation:
/etc/skel, /etc/skel/
NEW QUESTION 100
What is true about the Hop Limit field in the IPv6 header?
- A. Each router forwarding the packet decreases the field's value.
- B. The field is transmitted within a hop-by-hop extension header.
- C. For multicast packages, the field's value is always 1.
- D. Each router forwarding the packet increases the field's value.
- E. The field is not changed during the transport of a package.
Answer: A
NEW QUESTION 101
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 after the row [SectionName].
- B. It is placed in curly brackets as in Section SectionName { ... }.
- C. It is placed between a line containing Section "SectionName" and a line containing EndSection.
- D. It is placed between the tags <Section name="SectionName"> and </Section>
- E. It is placed after an initial unindented Section "SectionName" and must be indented by exactly one tab character.
Answer: C
NEW QUESTION 102
FILL BLANK
Which command included in systemd supports selecting messages from the systemd journal by criteria such as time or unit name? (Specify only the command without any path or parameters.)
Answer:
Explanation:
journalctl
NEW QUESTION 103
Which of the following keywords can be used in the file /etc/resolv.conf? (Choose TWO correct answers.)
- A. nameserver
- B. search
- C. lookup
- D. method
- E. substitute
Answer: A,B
NEW QUESTION 104
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.)
Answer:
Explanation:
DISPLAY, $DISPLAY
NEW QUESTION 105
Which file, if present, must contain all users that are allowed to use the cron scheduling system? (Specify the full name of the file, including path.)
Answer:
Explanation:
crontab
NEW QUESTION 106
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