安装卫星天线时,一般情况下要保证天线的南向净空。如果周围存在高大建筑物或山峰等遮挡物体,需保证在向南方向上,天线顶部与遮挡物顶部任意连线,该线与天线垂直向上的中轴线之间夹角不小于()。
A、45度
B、60度
C、50度
D、55度
什么是结构化综合布线系统,它包含哪几个部分?
IBM DS5000 systems supports RAID 6. RAID 6 support has two parity bits so that the system cansupport two drive failures. Which of the following items is the IBM designation for this feature onthe DS5000?()
A、6 P+Q
B、6 D+P
C、6 D P
D、RAID DP
提高记忆能力的方法主要有()。
A、地点法
B、韵律法
C、记笔记
D、组块
A customer has two locations located 7 kilometers apart. The production site has a Cisco 9509chassis with 48 Fibre Channel ports activated, and the disaster recovery site has a Cisco 9509chassis with 48 Ethernet ports activated. Which of the following products will be used to get thedata from one location to the other?()
A、IBM SAN40-B4
B、Cisco MDS 9222i
C、Cisco MDS 9148
D、IBM SAN32B-E4 with encryption
从短时记忆向长时记忆转化的重要条件是()。
A、复述
B、视觉编码
C、声音编码
D、感觉寄存