You were recently hired by Certkiller .com as a database administrator. You are asked to find out whether the currently functional listener process, named L1, has been password protected or not. You are not familiar with the file system of the new organization. How would you accomplish the task?() by using the STATUS command of the Listener control utility。 by using the STATUS L1 command of the Listener control utility。 by using the SHOW RULES command of the Listener control utility。 by using the SET PASSWORD command of the Listener control utility。 by searching for the PASSWORD_LISTENER entry in the listener.ora file。
什么是无损检测?
What characteristics make ADSL the likely choice among DSL technologies for Teleworker?() most widely deployed by service providers 。 provides asymmetrical bandwidth, including high speed downlink。 data rate is affected by distance to the Central Office。 provides the furthest reach at T1 speeds 。 supports connection of two routers without the use of a DSL access concentrator。
叙述成本法应用的前提条件。
在常用的数据控件中,只需指定DataSource而不需指定DataField的控件有哪些?
Which two statements are correct about database transportation?()