chapter 1, section six:
Looks like the writer was very interested in the DNS operator! XD
Jokes apart, thanks for the report! I'll add the issue to the course tasks, and this will surely be fixed in the next release of the course.
another minor errate in summary of chapter 2, last summary lines reads
"The oc get node, oc adm top, oc adm node-logs, and oc adm debug commands provide troubleshooting information about OpenShift nodes."
The correction is : command for debug is oc debug Not oc adm debug
another minor errate in Chapter 3 "Guides exercise Guided Exercise: Configuring Identity Providers"
the last line before task 1: "
The command ensures that the cluster API is reachable, the httpd-utils package is installed, and that the authentication settings are configured to the installation defaults."
Correction: the package is http-tools not httpd-utils