21Which command terminates a process by PID?AexitBkillCendDstopView AnswerDiscussWorkspaceReportSaveEasy
22Which command shows free and used memory?AdfBfreeCmemDtop -dView AnswerDiscussWorkspaceReportSaveEasy
23Which command schedules recurring jobs?Aat onlyBjobsCsleepDcrontabView AnswerDiscussWorkspaceReportSaveEasy