【单选题】
Which of the following server roles provides a common time to all computers?()
A、NTP
B、SNMP
C、SMTP
D、RAS
A、NTP
B、SNMP
C、SMTP
D、RAS
A、cat /proc/usr/lparchk B、cat /proc/ppc64/lparcfg C、/var/adm/tools/res_list D、/var/adm/tools/lparalloc