MCTSMCTS(70-528)單項選擇題每日一練(2019.01.10)

來源：考試資料網(wǎng)

1 你正在使用如下的代碼段去創(chuàng)建一個 DataTable：（行號只作為標(biāo)識）
你需要確保當(dāng)新的行被增加或修改時Total列的值為Price列乘以Quantity列的值。你該如何做？（）

2 You have an SQL query that takes one minute to execute. You use the following code segment to execute the SQL query asynchronously.Dim ar As IAsyncResult = cmd.BeginExecuteReader()You need to execute a method named DoWork() that takes one second to run while the SQL query is executing. DoWork() must run as many times as possible while the SQL query is executing. Which code segment should you use?（）

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3 你有一個需要大約執(zhí)行一分鐘的 SQL 查詢。為此，你使用如下的代碼段異步執(zhí)行這個查詢：IAsyncResult ar = cmd.BeginExecuteReader()。當(dāng)上面SQL查詢在執(zhí)行的過程中，你需要同時執(zhí)行一個方法Do Work()，這個方法大約需要1秒鐘的執(zhí)行時間。而且在SQL 查詢執(zhí)行的過程中需要盡可能的多次執(zhí)行Do Work()方法，你應(yīng)該使用下面那個代碼段？（）

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4 You are deploying a Web site to a server managed by a hosting company. The only access you have to the server is through FTP. You need to precompile and deploy the Web site without its source files. What should you do? （）

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5 You create a Web Form that contains a button named btnCancel that enables users to exit the page. When users click this button, validation must not occur. During testing you learn that clicking the Cancel button does not enable users to exit the page. You need to ensure that users can always exit the page.What should you do? （）

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