/etc/timezone, /etc/localtime, /usr/share/zoneinfo, environment variables (LC_*, LC_ALL, LANG, TZ), /usr/bin/locale, tzselect, tzconfig, date, iconv, UTF-8, ISO-8859, ASCII, Unicode
108 Essential System Services
108.1 Maintain system time ( Chapter 7 )
● Set the system date and time
● Set the hardware clock to the correct time in UTC
● Configure the correct time zone
● Basic NTP configuration
● Knowledge of using the pool.ntp.org service
● Awareness of the ntpq command
● The following is a partial list of the files, terms, and utilities covered in this objective: /usr/share/zoneinfo, /etc/timezone, /etc/localtime, /etc/ntp.conf, date, hwclock, ntpd, ntpdate, pool.ntp.org
108.2 System logging ( Chapter 7 )
● Configuration of the syslog daemon
● Understanding of standard facilities, priorities, and actions
● Configuration of logrotate
● Awareness of rsyslog and syslog-ng
● The following is a partial list of the files, terms, and utilities covered in this objective: syslog.conf, syslogd, klogd, /var/log, logger, logrotate, /etc/logrotate.conf, /etc/logrotate.d/, journalctl, /etc/system/journal.conf, /var/log/journal/
108.3 Mail Transfer Agent (MTA) basics ( Chapter 9 )
● Create email aliases
● Configure email forwarding
● Knowledge of commonly available MTA programs (postfix, sendmail, qmail, exim) (no configuration)
● The following is a partial list of the files, terms, and utilities covered in this objective: ∼/.forward, sendmail emulation layer commands, newaliases, mail, mailq, postfix, sendmail, exim, qmail
108.4 Manage printers and printing ( Chapter 6 )
● Basic CUPS configuration (for local and remote printers)
● Manage user print queues
● Troubleshoot general printing problems
● Add and remove jobs from configured printer queues
● The following is a partial list of the files, terms, and utilities covered in this objective: CUPS configuration files, tools and utilities; /etc/cups; lpd legacy interface (lpr, lprm, lpq)
109 Networking Fundamentals
109.1 Fundamentals of Internet protocols ( Chapter 8 )
● Demonstrate an understanding of network masks and CIDR notation
● Knowledge of the differences between private and public “dotted quad” IP addresses
● Knowledge about common TCP and UDP ports (20, 21, 22, 23, 25, 53, 80, 110, 123, 139, 143, 161, 162, 389, 443, 465, 514, 636, 993, 995)
● Knowledge about the differences and major features of UDP, TCP, and ICMP
● Knowledge of the major differences between IPv4 and IPV6
● Knowledge of the basic features of IPv6
● The following is a partial list of the files, terms, and utilities covered in this objective: /etc/services, IPv4, IPv6, subnetting, TCP, UDP, ICMP
109.2 Basic network configuration ( Chapter 8 )
● Manually and automatically configure network interfaces
● Basic TCP/IP host configuration
● Setting a default route
● The following is a partial list of the files, terms, and utilities covered in this objective: /etc/hostname, /etc/hosts, /etc/nsswitch.conf, ifconfig, ifup, ifdown, ip, route, ping
109.3 Basic network troubleshooting ( Chapter 8 )
● Manually and automatically configure network interfaces and routing tables to include adding, starting, stopping, restarting, deleting, or reconfiguring network interfaces
● Change, view, or configure the routing table and correct an improperly set default route manually
● Debug problems associated with the network configuration
● The following is a partial list of the files, terms, and utilities covered in this objective: ifconfig, ip, ifup, ifdown, route, host, hostname, dig, netstat, ping, ping6, traceroute, traceroute6, tracepath, tracepath6, netcat
109.4 Configure client-side DNS ( Chapter 8 )
● Query remote DNS servers
● Configure local name resolution and use remote DNS servers
● Modify the order in which name resolution is done
● The following is a partial list of the files, terms, and utilities covered in this objective: /etc/hosts, /etc/resolv.conf, /etc/nsswitch.conf, host, dig, getent
110 Security
110.1 Perform security administration tasks ( Chapter 10 )
● Audit a system to find files with the SUID/SGID bit set
● Set or change user passwords and password aging information
● Be able to use nmap and netstat to discover open ports on a system
● Set up limits on user logins, processes, and memory usage
● Determine which users have logged in to the system or are currently logged in
● Basic sudo configuration and usage
● The following is a partial list of the files, terms, and utilities covered in this objective: find, passwd, lsof, nmap, chage, netstat, sudo, /etc/sudoers, su, usermod, ulimit, who, w, last
110.2