Which is a supported method to upgrade firmware on an IBM Power Systems 570?（）

A、Use the /usr/sbin/invscout AIX command

B、Use the 'Updates' panel on the managing HMC

C、Boot the 570 using an IBM-provided microcode CD

D、Use the /usr/lpp/diagnostics/bin/update_flash AIX command

边界曲面EDGESURF命令是通过指定（）作为边界线构造边界的表面。

A、四条任意曲线

B、三条封闭曲线

C、任意多条曲线

D、四条端点相连的封闭曲线

熔断器的作用有（）。

A、过流保护

B、短路保护

C、过压保护

D、欠压保护

View the Exhibit and examine the disk groups created at the time of migrating the database storage to Automatic Storage Management （ASM）.  Why does the FRA disk group initially have more free space even though both DATA and FRA disk groups are provided with the same size？（）

A、 Because the FRA disk group will not support dynamic rebalancing

B、 Because the FRA disk group is not configured to support mirroring

C、 Because disks in the FRA disk group are not formatted at this stage

D、 Because the FRA disk group will support only a single size of allocation unit

Which of the following protocols allow the set up, teardown and streaming of VoIP traffic? （）(SelectTWO)

NTP

VNC

RTP

SIP

TLS

Which of the following protocols is commonly used for VoIP technology?（）

A、Telnet

B、SMTP

C、SIP

D、SNMP