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QUESTION 31
What is true about the ntpdate command?
A.   It is the primary management command for the NTP time server.
B.   It updates the local system’s date (i.e. day, month and year) but not the time (i.e. hours, minutes, seconds).
C.   It queries one or more NTP time servers and adjusts the system time accordingly.
D.   It sends the local system time to one or many remote NTP time servers for redistribution.
E.   It can be used by any user to set the user clock independently of the system clock.
Answer: C
QUESTION 32
Which command is used to sync the hardware clock to the system clock? (Specify ONLY the command without any path or parameters.)
Answer:
hwclock, /sbin/hwclock, /usr/sbin/hwclock
QUESTION 33
Which of the following is a legacy program provided by CUPS for sending files to the printer queues on the command line?
A.   lpd
B.   lpp
C.   lpq
D.   lpr
Answer: D
QUESTION 34
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.)
Answer:
server
QUESTION 35
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.)
Answer:
lpq, /usr/bin/lpq, lpstat, /usr/bin/lpstat
QUESTION 36
Which of the following commands is used to rotate, compress, and mail system logs?
A.   rotatelog
B.   striplog
C.   syslogd –rotate
D.   logrotate
E.   logger
Answer: D
QUESTION 37
What is the purpose of the command mailq?
A.   It fetches new emails from a remote server using POP3 or IMAP.
B.   It is a multi-user mailing list manager.
C.   It is a proprietary tool contained only in the qmail MTA.
D.   It queries the mail queue of the local MTA.
E.   It is a command-line based tool for reading and writing emails.
Answer: D
QUESTION 38
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
QUESTION 39
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:
newaliases, sendmail -bi
QUESTION 40
Please specify the top directory containing the configuration files for the CUPS printing system. (Specify the full path to the directory.)
Answer:
/etc/cups, /etc/cups/
QUESTION 41
Why is the correct configuration of a system’s time zone important?
A.   Because the conversion of Unix timestamps to local time relies on the time zone configuration.
B.   Because the time zone is saved as part of the modification times of files and cannot be changed after a file is created.
C.   Because the environment variables LANG and LC_MESSAGES are, by default, set according to the time zone.
D.   Because NTP chooses servers nearby based on the configured time zone.
Answer: A
QUESTION 42
Which of the following are commonly used Mail Transfer Agent (MTA) applications? (Select THREE.)
A.   Postfix
B.   Procmail
C.   Sendmail
D.   Exim
E.   SMTPd
Answer: ACD
QUESTION 43
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
QUESTION 44
Which file inside the CUPS configuration directory contains the definition of the printers?
A.   cups-devices.conf
B.   snmp.conf
C.   printcap.conf
D.   printers.conf
E.   cupsd.conf
Answer: D
QUESTION 45
What is true regarding the file ~/.forward?
A.   As it is owned by the MTA and not writable by the user, it must be edited using the editaliases command.
B.   After editing ~/.forward the user must run newaliases to make the mail server aware of the changes.
C.   Using ~/.forward, root may configure any email address whereas all other users may configure only their own addresses.
D.   When configured correctly, ~/.forward can be used to forward each incoming mail to more than one other recipient.
Answer: D
QUESTION 46
What entry can be added to the syslog.conf file to have all syslog messages generated by a system displayed on console 12?
A.   *.* /dev/tty12
B.   /var/log/messages | /dev/tty12
C.   | /dev/tty12
D.   syslog tty12
E.   mail.* /dev/tty12
Answer: A
QUESTION 47
Which of the following tasks can be accomplished using the command date? (Select TWO.)
A.   Synchronize the hardware and system clocks.
B.   Output date and time in different formats.
C.   Set the system clock.
D.   Set the hardware clock.
E.   Update the time via NTP.
Answer: BC
QUESTION 48
Which of the following parameters are used for journalctl to limit the time frame of the output? (Select TWO.)
A.   –from=
B.   –since=
C.   –until=
D.   –upto=
E.   –date=
Answer: BC
QUESTION 49
Which of the following are syslog facilities? (Select TWO.)
A.   local7
B.   mail
C.   advanced
D.   postmaster
E.   remote
Answer: AB
QUESTION 50
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.)
Answer:
mailq, /usr/bin/mailq, sendmail -bp, /usr/sbin/sendmail -bp, /usr/lib/sendmail -bp,
QUESTION 51
Which of the following IPv4 networks are reserved by IANA for private address assignment and private routing? (Select THREE.)
A.   127.0.0.0/8
B.   10.0.0.0/8
C.   169.255.0.0/16
D.   172.16.0.0/12
E.   192.168.0.0/16
Answer: BDE
QUESTION 52
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 53
Which of the following lines are valid in the file /etc/hosts? (Select TWO.)
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
QUESTION 54
Which of the following keywords can be used in the file /etc/resolv.conf? (Select TWO.)
A.   substitute
B.   nameserver
C.   search
D.   lookup
E.   method
Answer: BC
QUESTION 55
With IPv6, how many bits have been used for the interface identifier of an unicast address? (Specify the number using digits only.)
Answer:
64
QUESTION 56
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
QUESTION 57
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
QUESTION 58
Which of the following details is NOT provided in any output from the netstat utility?
A.   broadcast services
B.   interface statistics
C.   masquerading connections
D.   network connections
E.   routing tables
Answer: A
QUESTION 59
Which of the following keywords can be used in the file /etc/nsswitch.conf to specify a source for host name lookups? (Select TWO.)
A.   resolv
B.   dns
C.   remote
D.   files
E.   hosts
Answer: BD
QUESTION 60
What is the command to delete the default gateway from the system IP routing table? (Select TWO.)
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
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