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System Administrator
A system administrator (or sysadmin) is an IT professional responsible for the maintenance, configuration, and reliable operation of an organization's computer systems, including servers, operating systems, software, and networks
Quiz Questions
Q172: Troubleshooting: What is 'OOM killer'?
Related to selinux
Related to tcpdump
process that kills tasks when system runs out of memory
Related to sfc /scannow
Related to bootloader (grub)
Q173: Backup/DR: What does 'RTO' refer to?
Related to rpo
recovery time objective — acceptable downtime
Related to offsite replication
Related to snapshots
Related to incremental backup
Q174: Virtualization: What does 'container vs VM' mean?
Related to vm snapshot
containers share kernel, lighter-weight than VMs
Related to paravirtualization
Related to vmotion/live migration
Related to hypervisor type 2
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