在可信任计算机标准评估准则中,安全等级最低的是()
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当今网络的管理协议是:()
A. SNMP
B. NMS
C. SMTP
D. HTTP
网络层中用于传送有关通信问题消息的是:()
A. TCP
B. ICMP
C. UDP
D. SNMP
利用 Access 2010 创建的数据库文件,其默认的扩展名为()
A. mdf
B. dbf
C. mdb
D. accdb
Helen go on the trip with us, but she isn’t quite sure yet.shllB.mustC.myD.cnHelen\ go on the trip with us, but she isn’t quite sure yet.shll B.must C.my D.cn
A. shall
B. must
C. may
D. can