Which statement describes the rule of split horizon?（） Only routers can split boundaries (horizons) between concentric networks.。 All distance vector protocols require fall back routers that may cause momentary loops as the topology changes.。 Networks can only remain fully converged if all information about routers is sent out all active interfaces.。 Information about a route should not be sent back in the direction from which the original update come.。 Each AS must keep routing tables converged to prevent dead routes from being advertised across the AS boundary.。
员工素质的提高是提高服务质量的重要保障。
You are the network administrator for ExamSheet.net. Two users, Peter and Keith, share a Windows 2000 Professional computer. The computer remains logged on with a shared user account named Kiosk at all times. Peter has limited dexterity, which prevents him from using the standard keyboard when completing his daily computing tasks. You configure his Windows 2000 Professional computer to use on-screen keyboard and ToggleKeys option. You have the accessibility option settings to the desktop. Keith does not want to use the on-screen keyboard when he uses the computer. You need to enable both users to quickly switch between their preferred settings. What should you do?（） Create a roaming user profile for the Kiosk user account.。 Create an .acw file containing Peter’s preferred settings and save it to the desktop.。 Run the Accessibility wizard and selectRestore Defaults.。 Use Task Manager to end the Explorer.exe process.。
货舱内所能容纳无包装的小块状，颗粒状，粉末状的货物的最大体积称为（） 货舱散装容积。 货舱包装容积。 液货舱容积。 液舱容积。
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煤料的堆密度最小时，配合煤的水分范围是（）。
