CompTIA Linux+ Powered by Linux Professional Institute Study Guide. Richard Blum

The following is a partial list of the files, terms, and utilities covered in this objective: /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