启动DNS服务的守护进程()
A. httpd start
B.httpd stop
C. named start
D. named stop
A.kill-USR253
B.kill-USR153
C.kill-INT53
D.kill–HUP53
A.cli dns clear cache
B.cli dns cacheclear
C.cli dns clearcache
D.cli dns cache clear
假设系统中所有进程是同时到达,则使进程平均周转时间最短的是()调度算法。
A.先来先服务
B.短进程优先
C.时间片轮转
D.优先级