The server room that an administrator manages has just caught fire. Which of the following is the FIRST thing that the administrator should do？（）
A、 Evacuate all personnel.
B、 Notify staff of the potential service outage.
C、 Use fire suppression techniques until the fire department arrives.
D、 Grab the backup tapes and exit the server room.
RIP有几个版本？它是基于什么路由算法，最大跳数为几跳.（）
A、2链路状态16
B、1链路状态15
C、2距离向量15
D、1距离向量16
GB/T16680-1996《软件文档管理指南》中将项目文档分为开发文档、产品文档和管理文档三类，（）属于产品文档.
A、可行性研究报告
B、开发计划
C、需求规格说明书
D、参考手册和用户指南
在任何时候，工作表中（）单元格是激活的（即当前单元格）。
A、有两个
B、有且仅有一个
C、可以有一个以上
D、至少有一个
Which three are well-known mandatory BGP attributes? （）
AOrigin
BAS path
CNext hop
DCommunity
EMultiple exit discriminator
An administrator needs to implement a security patch policy on the network that adheres to aninternal SLA. Which of the following actions BEST achieves this task？（）
A、 Define a test server group， install the patches and if successful schedule installation on production servers.
B、 Define a test server group， schedule installation on production servers and then install all updates and patches.
C、 Install the patches during a non-working hour.
D、 Send an email to all company users and request the best time for installation.