单项选择题

A system administrator thinks that a filesystem may be full and that is what caused the machine to crash. Which command will show the administrator if they are correct?（）

A. du
B. df
C. fsck
D. ncheck

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单项选择题

Which of the following procedures best explains how to enable the NIS name resolution to take precedence over DNS on a system-wide basis?（）

A. Add the following line to /etc/netsvc.conf: hosts = nis,bind,local
B. edit /etc/netsvc.conf to add the following: process /full/path/of/process \{ hosts = local,nis,dns}
C. In an NIS and DNS environment, NIS takes precedence over DNS in this environment resulting in no change
D. Change the NSORDER environment variable

单项选择题

A system must be upgraded from AIX 5.1 to 5.2. Which of the following scheduling processes should be performed? （）

A. Schedule enough down time to backup, upgrade and reboot.
B. Backup, upgrade, then schedule enough down time to reboot the system.
C. Backup, then schedule enough down time to upgrade and reboot the system.
D. No scheduling processes are necessary because no down time is required.

单项选择题

Where is the su log located?（）

A. /var
B. /var/adm
C. /var/perf
D. /var/spool