TELNET远程登陆服务为了解决系统之间的差异,引入了一个概念,这个概念是()。
A、模拟网络
B、虚拟设备
C、网络虚拟终端
D、仿真设备
SQL语句中删除视图的命令是( )。
A、DROP TABLE
B、DROP VIEW
C、ERASE TABLE
D、ERASE VIEW
活动目录的数据库文件不包括以下哪种类型()。
A、Ntds.dit
B、EdB.log
C、Temp.edb
D、SYSTEM.dll
Which of the following commands must be issued to remove a stored script from the recovery catalog?()
A、DELETE SCRIPT
B、ERASE SCRIPT
C、REMOVE SCRIPT
D、UNCATALOG SCRIPT
Which of the following steps is incorrect in the following sequence of enabling the ARCHIVELOG mode of a database?()
A、Shut down the database.
B、Set the appropriate parameters in init.ora file.
C、Start the database in NOMOUNT state.
D、Issue the ALTER DATABASE ARCHIVELOG command.
E、Open the database.
F、Take a full closed backup.
Which two are equivalent?()
A3/2
B3<2
C3*4
D3<<2
E3*2^2
F3<<<2