108 Essential System Services KA

Question 1

108.1 Maintain system time

Answer 1

Key Knowledge Areas:

Set the system date and time.
Set the hardware clock to the correct time in UTC.
Configure the correct timezone.
Basic NTP configuration using ntpd and chrony.
Knowledge of using the pool.ntp.org service.
Awareness of the ntpq command.

Question 2

Set the system date and time.

Answer 2

a

Question 3

Set the hardware clock to the correct time in UTC.

Answer 3

a

Question 4

Configure the correct timezone.

Answer 4

a

Question 5

Basic NTP configuration using ntpd and chrony.

Answer 5

a

Question 6

Knowledge of using the pool.ntp.org service.

Answer 6

a

Question 7

Awareness of the ntpq command.

Answer 7

a

Question 8

108.2 System logging

Answer 8

Key Knowledge Areas:

Basic configuration of rsyslog.
Understanding of standard facilities, priorities and actions.
Query the systemd journal.
Filter systemd journal data by criteria such as date, service or priority.
Configure persistent systemd journal storage and journal size.
Delete old systemd journal data.
Retrieve systemd journal data from a rescue system or file system copy.
Understand interaction of rsyslog with systemd-journald.
Configuration of logrotate.
Awareness of syslog and syslog-ng.

Question 9

Basic configuration of rsyslog.

Answer 9

a

Question 10

Understanding of standard facilities, priorities and actions.

Answer 10

a

Question 11

Query the systemd journal.

Answer 11

a

Question 12

Filter systemd journal data by criteria such as date, service or priority.

Answer 12

a

Question 13

Configure persistent systemd journal storage and journal size.

Answer 13

a

Question 14

Delete old systemd journal data.

Answer 14

a

Question 15

Retrieve systemd journal data from a rescue system or file system copy.

Answer 15

a

Question 16

Understand interaction of rsyslog with systemd-journald.

Answer 16

a

Question 17

Configuration of logrotate.

Answer 17

a

Question 18

Awareness of syslog and syslog-ng.

Answer 18

a

Question 19

108.3 Mail Transfer Agent (MTA) basics

Answer 19

Key Knowledge Areas:

Create e-mail aliases.
Configure e-mail forwarding.
Knowledge of commonly available MTA programs (postfix, sendmail, exim) (no configuration).

Question 20

Create e-mail aliases.

Answer 20

a

Question 21

Configure e-mail forwarding.

Answer 21

a

Question 22

Knowledge of commonly available MTA programs (postfix, sendmail, exim) (no configuration).

Answer 22

a

Question 23

108.4 Manage printers and printing

Answer 23

Key Knowledge Areas:

Basic CUPS configuration (for local and remote printers).
Manage user print queues.
Troubleshoot general printing problems.
Add and remove jobs from configured printer queues.

Question 24

Basic CUPS configuration (for local and remote printers).

Answer 24

a

Question 25

Manage user print queues.

Answer 25

a

Question 26

Troubleshoot general printing problems.

Answer 26

a

Question 27

Add and remove jobs from configured printer queues.

Answer 27

a