I recently passed my Sys Admin cert from Linux Foundation and 50% of things by me were done on the fly:

• View to what website the cerficate has been issued
• Git commiting and pushing
• Smart finding and deleting / moving
• NFS and SSHFS mounting
• Firewall redirection probably using iptables
• Overall user management
• Docker container management
• Sysctl kernel parameters persistence
• Systemctl server managing
• AppArmor which I failed
• LVM disk extending
• From source compilation using make
• NTP time synchronisation

that’s all I remember. Overall I find that typicall Linux Desktop differs from these certs and the job.