未知题型 In the following essay, each blank has four choices. Choose the best answer and write down on the answer sheet.In low - speed network, it is usually adequate to wait for congestion to occur and then react to it by telling the source of packets to slow down. In high - speed networks, this approach often works poorly, because in the(66)between sending the notification and notification arriving at the source, thousands of additional(67)may arrive. In ATM network, a major tool for preventing(68)is(69)control. When a host wants a new virtual(70), it must describe the traffic to be offered and the service expected.

未知题型 You are the administrator of a SQL server computer. The server is running SQL Server 6.5 and SQL Server 7.0.You install a named instance of SQL Server 2000, and then run the SQL server upgrade wizard. On the database selection screen, some of the SQL Server 6.5 databases are not listed.You cancel the SQL Server upgrade wizard.You need to ensure that the SQL Server 6.5 databases are listed in the wizard. What should you do?

未知题型 You are the administrator of a SQL Server 2000 computer. The server contains a database that has the torn page detection database option enabled. Backups of the database are made daily.The server loses power for one minute. When power is restored, torn pages are detected. You notice in SQL Server Enterprise Manager that the database is marked suspect.You need to correct the problem. What should you do?