You need to enable the web server (running as the www-data user and group) to write into a directory called /home/webfiles. Which commands will accomplish this task in the most secure manner?

1. chgrp www-data /home/webfiles ; chmod 775 /home/webfiles
2. chmod 777 /home/webfiles
3. chgrp www-data /home/webfiles ; chmod 711 /home/webfiles
4. chmod 707 /home/webfiles

Which of the following will execute a job through cron at 12:15 a.m. and 12:15 p.m. every day?

1. 0,12 15 * * *
2. 15 0,12 * * *
3. 15 * * * 0/12
4. */12 * * * 15

Which file is used to indicate the local time zone on a Linux server?

1. /etc/timez
2. /etc/timezoneconfig
3. /etc/localtime
4. /etc/localtz

When importing entries into the LDAP database using ldapadd -f <filename>, in which format should the file be?

1. LDAP
2. TXT
3. CSV
4. LDIF

Which of the following commands removes an expiration from an account?

1. sudo chage -l username
2. sudo chage -E -1 username
3. sudo chage -E now username
4. sudo chage --noexpire username

Within which directory will you find files related to the time zone for various regions?

1. /etc/timezoneinfo
2. /etc/zoneinfo
3. /var/zoneinfo
4. /usr/share/zoneinfo

Which of the following commands schedules a series of commands to execute 1 hour from now?

1. atq +1hr
2. at now + 1 hour
3. atq
4. at -1

You need to delete a user from the system, including their home directory. Which of the following commands accomplishes this task?

1. userdel
2. userdel -r
3. userdel -R
4. deluser

Which file contains a list of usernames, UIDs, and encrypted passwords?

1. /etc/passwd
2. /etc/shadow
3. /etc/encpass
4. /etc/grouppass

Which job scheduler should you use if the computer on which you need to schedule the job is powered down at various times?

1. cron.d
2. cron.hourly
3. anacron
4. at

Which of the following commands provides the current date and time in a format of seconds since the epoch?

1. date +%seconds
2. date +%s
3. date --seconds
4. date --now

Which option to the iconv command shows the available character sets on a given system?

1. --showchar
2. --show
3. --list
4. --all

Which environment variable controls the format of dates and times, such as a 12-hour or 24-hour formatted clock?

1. LOCALE_DATE
2. DATE_FORMAT
3. LC_TIME
4. LC_DATE

Which command is recommended for configuration of slapd for OpenLDAP versions 2.3 and later?

1. slapd-conf
2. config-slapd
3. openldap-config
4. slapd-config

Which shortcut within cron enables running of a task every day at midnight?

1. @daily
2. @daybegin
3. @topday
4. @beginday

Which of the following encoding provides a multibyte representation of characters?

1. ISO-8859
2. UTF-8
3. ISO-L
4. UFTMulti

Which of the following commands changes a group called DomainAdmins to DomainUsers?

1. groupmod -n DomainAdmins DomainUsers
2. groupchg DomainAdmins DomainUsers
3. chgroup DomainAdmins DomainUsers
4. group -N DomainAdmins DomainUsers

Which file stores group information on a Linux server?

1. /etc/groupinfo
2. /etc/groups
3. /etc/roles
4. /etc/group

Which command can be used to create an LDIF file from the current LDAP database?

1. slapdump
2. ldapdump
3. slapcat
4. catldap

You are looking for a scheduled job that is not found in /etc/crontab, through systemd timers, or within /var/spool/cron. What is another location in which the scheduled job might be stored?

1. /etc/crontabs
2. /etc/cron.conf
3. /etc/cron.d/
4. /etc/sked

You need to determine if LDAP integration is working correctly. In order to do so, you would like to obtain a list of users, as read by /etc/nsswitch.conf. Which command can be used for this purpose?

1. getuser
2. getent
3. usermod
4. userlist

What is the name of the configuration file that contains information about group and user addition, such as the maximum and minimum user and group IDs, to be used when adding users and groups?

1. /etc/groupinfo
2. /etc/login.defs
3. /etc/login.info
4. /etc/loginlist

Which environment variable is used for localization related to measurement units such as metric?

1. LC_METRIC
2. LC_MEASURE
3. LC_MEASUREMENT
4. LC_MEASUREUNITS

Which of the following lines added to .profile in a user’s home directory will set their time zone to Central time?

1. TZ=/Central ; export TZ
2. TIMEZONE='America/Chicago' ; export TIMEZONE
3. set TZ=/Central
4. TZ='America/Chicago'; export TZ

Within which directory will you find scripts that are scheduled to run through cron every 24 hours?

1. /etc/cron.daily
2. /etc/cron.weekly
3. /etc/cron.hourly24
4. /etc/crontab

Which of the following values for the LANG variable will configure the system to bypass locale translations where possible?

1. LANG=COMPAT
2. LANG=NONE
3. LANG=C
4. LANG=END

When running useradd, which option needs to be specified in order for the user’s home directory to be created?

1. -h
2. -m
3. -x
4. -a

Which of the following commands locks out password-based login for a user but does not prevent other forms of login?

1. usermod -L
2. userdel -r
3. useradd -h
4. userlock

If you need to temporarily reconfigure all locale variables and settings for a given session, which environment variable can be used?

1. LC_LIST
2. LC_GLOBAL
3. LC_ALL
4. ALL_LOCALE

Which of the following will run a command called /usr/local/bin/changehome.sh as the www-data user when placed in /etc/crontab?

1. 1 1 * * * www-data /usr/local/bin/changehome.sh
2. www-data changehome.sh
3. */1 www-data changehome.sh
4. * * */www-data /usr/local/bin/changehome.sh

Which of the following commands produces a report listing the last password change date for all users on the system?

1. passwd -a
2. passwd -S
3. passwd -a -S
4. passwd --all

Assume that passwords must be changed every 60 days. Which command will change the date of the user’s last password change without the user actually changing the account password?

1. chage -f
2. chage -W
3. chage -l
4. chage -d

Which of the following files is used by anacron for reading configuration information related to jobs?

1. /etc/anacron.d
2. /etc/anacrontab
3. /etc/anacron.config
4. /etc/anacron.conf

Which of the following commands is used to add entries to the OpenLDAP database?

1. ldapd
2. adduser
3. addldap
4. ldapadd

Which file contains a list of users who are not allowed to create cron scheduled tasks?

1. /etc/cron.users
2. /etc/cron.deny
3. /etc/cron.denyusers
4. /etc/cron.userlist

You are viewing the /etc/passwd file and see a * where the password should be. What does the presence of a * indicate within the password file?

1. The system uses forward password aging.
2. The system uses shadow passwords.
3. The system has been compromised.
4. Users have a * for their passwords.

Which of the following best describes the relationship between UIDs and GIDs on a Linux system?

1. The UID and GID are the same across the system for a given user.
2. Each user has a UID and GID that are the same and are created when the user is created.
3. The UID represents the user whereas the GID is a globally unique user ID.
4. There is no direct relationship between UID and GID.

Which of the following commands is used to re-create indexes based on existing slapd databases?

1. ldapind
2. ldapindex
3. slapindex
4. indexldap

Which command is used to change a user’s home directory to /srv/data/username and move the contents at the same time?

1. usermod -md /srv/data/username <username>
2. homedir -m /srv/data/username <username>
3. userex -m /srv/data/username <username>
4. userchg /m /srv/data/username -d <username>

Which option to useradd will add groups for a user?

1. -g
2. -x
3. -l
4. -G

Which command will list the cron entries for a given user as denoted by <username>?

1. crontab -l -u <username>
2. crontab -u <username>
3. cron -u <username>
4. cronent -u <username>

Which option to useradd creates a system user rather than a normal user?

1. -r
2. -s
3. -a
4. -S

Which file contains encrypted password information for groups?

1. /etc/group
2. /etc/gshadow
3. /etc/gsecure
4. /etc/group.conf

Which of the following commands can be used to help with recovery of a corrupted OpenLDAP database?

1. openldap-recover
2. oreco
3. slapd-recover
4. slapd_db_recover

Which of the following best describes the use of the groupdel command?

1. You may force group deletion with the -f option.
2. If a user’s primary group is to be deleted, that user must be deleted first or have their primary group changed.
3. groupdel can be run at any time, regardless of group membership.
4. The -r option for groupdel will recursively change user’s GIDs after group deletion.

Which of the following commands displays the UID, primary group, and supplemental groups for a given user?

1. id
2. getid
3. passwd
4. chage

Which option to the usermod command is used to change a given user’s real name?

1. -R
2. -n
3. -d
4. -c

Assume that you have deleted a user account with UID 1501, including the -r option. Which command should you also run to look for other files that might have been owned by the user?

1. find -id 1501
2. grep 1501 *
3. grep -u 1501 *
4. find / -uid 1501

On which port does the slapd LDAP daemon listen for connections?

1. 389
2. 3389
3. 3306
4. 110

Which of the following commands will set the systemwide time zone to America/Los_Angeles?

1. ln -sf /usr/share/zoneinfo/America/Los_Angeles /etc/localtime
2. ln -sf America/Los_Angeles ; /etc/localtime
3. ln -sd /etc/localtime /usr/share/timezone/America/Los_Angeles
4. ln -sf /etc/localtime /usr/share/zoneinfo/America/Los_Angeles

Which locale-related variable is used for currency-related localization?

1. LC_MONE
2. LC_CURRENCY
3. LC_MONETARY
4. LC_CURR

Which option to systemd-run adds a timed event?

1. --timed
2. --add-timer
3. --on-calendar
4. --on-time

Which file is used to provide a list of users who can add and delete cron jobs?

1. /etc/cron.job
2. /etc/cron.allow
3. /etc/cron.users
4. /etc/crontab

Which debug level for slapd is used to provide debugging of configuration file processing?

1. 1
2. 64
3. 8
4. 0

Which command deletes an at job with an ID of 3?

1. atdt
2. at -l
3. atrm 3
4. rmat 3

Which command on a Debian-based system can be used to change the time zone using the package-based tools?

1. dpkg-reconfigure time
2. dpkg-reconfigure tzdata
3. apt-select tzdata
4. apt-config timezone

What will be logged with the loglevel set to 0x10 in a slapd.conf configuration file?

1. No debugging
2. Trace debugging
3. Stats logging
4. Packets sent and received

Within which directory should you place files in order for the files to be copied to a user’s home directory when the user is created?

1. /etc/skel
2. /etc/homedir
3. /home/usertemplate
4. /etc/template

Which command displays a list of jobs currently scheduled with at?

1. atlist
2. atq
3. atl
4. at --jobs

On which port does LDAP over SSL listen for connections?

1. 389
2. 443
3. 636
4. 3128

Which scheduler can be used to schedule a command to run once at a certain time?

1. at
2. cron
3. job
4. jobctl

Which file provides a list of users who are allowed to create at jobs?

1. /etc/at.users
2. /etc/at.scheduler
3. /etc/at.conf
4. /etc/at.allow

Which file extension is used for systemd timer units?

1. .conf
2. .timer
3. .timerd
4. .timeevent

Within which directory would you find a list of files corresponding to the users who have current cron jobs on the system?

1. /var/spool/cron/crontabs
2. /var/spool/jobs
3. /etc/cron
4. /etc/cron.users

When using slapadd for a large import, an error occurs at roughly 90 percent completion. Which option to slapadd enables specification of a line number from which the import will be restarted?

1. -l
2. -f
3. -q
4. -j

Which argument to the locale command displays currently available locales for a given system?

1. -c
2. -a
3. -p
4. -s

Which option to timedatectl sets the system clock?

1. --adjust-system-clock
2. -s
3. -c
4. -a

Which option to the file command displays information on the MIME type of the file being interrogated?

1. -i
2. -m
3. -l
4. -a

Which environment variable is used to set the paper size?

1. LC_PAPERSIZE
2. LC_PAPER
3. LC_PRINTERQ
4. LC_PRINTSIZE

Which of the following is used as a systemwide cron file?

1. /etc/cron.d
2. /etc/cron.sys
3. /etc/crontab
4. /etc/cron.tab

Which command can be used to view the available timezones on a system and obtain output that can be used in scripts for setting the time zone?

1. tzd
2. /etc/locale
3. tzdata
4. tzselect

Which option within a systemd timer unit will start a timer 90 minutes after boot?

1. OnBootSec=90min
2. OnBoot=90min
3. OnBootHour=1.5
4. StartOnBoot=90min

Which abbreviation is another name for information like the user’s full name, telephone number, and other contact information found in /etc/passwd?

1. USERINFO
2. GECOS
3. HOMEINFO
4. CDATA

Which option to the groupadd command specifies the GID for the group?

1. -g
2. -a
3. -h
4. -k

When working with systemd timer units, which option to systemctl displays the active timers?

1. list-timerunits
2. show-timers
3. list-timers
4. list-activetimers

Which shortcut to the OnCalendar systemd timer function indicates that the timer unit should run once a week?

1. OnceAWeek
2. weekly
3. everyweek
4. oneperweek

Which option to the crontab command removes the current crontab?

1. -r
2. -l
3. -g
4. -f

Which variable in /etc/default/useradd controls the location of the skeleton home directory?

1. SKELETON
2. SKEL
3. SKELDIR
4. SKELLOC

Which option to getent enumerates the password database for a given system?

1. password
2. listpass
3. passwd
4. showpassdb

Which directory contains the jobs scheduled with at?

1. /var/spool/cron/atjobs
2. /var/spool/at
3. /var/spool/cron/at
4. /var/spool/atjobs

Which variable in /etc/login.defs controls the minimum group ID to use on the system?

1. GIDMIN
2. GROUPID_MIN
3. GID_MIN
4. MIN_GID

Which variable in /etc/login.defs contains the location of a user’s email directory for use by programs such as userdel?

1. EMAILDIR
2. DIR_EMAIL
3. MAILDIR
4. MAIL_DIR

Which file contains user information such as username and real name and is readable by all users of the system?

1. /etc/pass
2. /etc/shadow
3. /etc/passwd
4. /etc/userinfo

Which shortcut can be used to indicate that a cron job should be executed on restart?

1. @restart
2. @startup
3. @reboot
4. @onboot

Which option to groupadd specifies that the group will be a system group?

1. -r
2. -m
3. -j
4. -b

Within which directory are databases stored for OpenLDAP?

1. /var/lib/ldap
2. /var/cache/openldap
3. /var/share/ldap
4. /usr/share/openldap

When listing systemd timer units, which option to list-timers shows both active and inactive units?

1. --all
2. --active-and-inactive
3. --inactive
4. All are shown by default.

Which file provides a list of users who are not allowed to create at jobs?

1. /etc/at.allow
2. /etc/at.deny
3. /etc/at.denyusers
4. /etc/at.conf.deny