As with all ITU standards，reduce energy consumption is a key factor taken into account at development stage.Indeed NGNs are believed to offer significant saving（）traditional networks.A．of B．over C．at D．in
As with all ITU standards，reduce energy consumption is a key factor taken into account at development stage.Indeed NGNs are believed to offer significant saving（）traditional networks.
A．of B．over C．at D．in
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GivenanHttpServletRequestrequest,whichretrievesanobjectoftypeAccountwithanIdof“account”?() A.Accountaccount=request.getResource（”account”）：B.Accountaccount=request.getAttribute（“account”）：C.Accountaccount=request.getParameter（account”）：D.Accountaccount=（Account）request.getResource（“account”）：E.Accountaccount=（Account）request.getAttribute（“account”）：F.Accountaccount=（Account）request.getParamter（“account”）：
You are the administrator of a Windows Server 2003 computer named Testking1.Backups of the System State data of Testking1 occur each day by using the localAdministrator account.A new requirement restricts you from running services by using theAdministrator account. To meet the requirement, you create a new service accountnamed BackupTestking1 to be used for backups. You want this account to have theminimum permissions necessary to perform backups.You need to grant the appropriate permissions to the BackupTestking1 account andto configure the backup job to use the BackupTestking1 account.What should you do?（）A. Add the BackupTestking1 account to the Server Operators group. Modify the backup Scheduled Task to use the BackupTestking1 account.B. Add the BackupTestking1 account to the Backup Operators group. Modify the backup Scheduled Task to use the BackupTesking1 account.C. Add the BackupTestking1 account to the Server Operators group. Modify the Task Scheduler service to use the BackupTestking1 account.D. Add the BackupTestking1 account to the Backup Operators group. Modify the Task Scheduler service to use the BackupTestking1 account.
13、以下关于MapReduce编程模型的描述正确的有哪些？A．MapReduce的编程模型包含Map和Reduce两个函数处理过程。B．对于map和reduce每个过程都由不同的计算机进行并行计算处理。C．Map的输出结果是一组＜key,value＞对，这是经过Map操作后所产生的中间结果。D．Reduce的工作是对相同key的value值进行归并处理。
以下关于MapReduce编程模型的描述正确的有哪些？A．MapReduce的编程模型包含Map和Reduce两个函数处理过程。B．对于map和reduce每个过程都由不同的计算机进行并行计算处理。C．Map的输出结果是一组＜key,value＞对，这是经过Map操作后所产生的中间结果。D．Reduce的工作是对相同key的value值进行归并处理。
MapReduce计算文件词频的例子中描述不正确的是A．包括了Split，Map，Shuffle，Reduce几个过程。在计算过程中数据始终以键值对的形式存在。B．Split就是将输入文件中的内容按行分割为key和value的形式。Map阶段对每块的每一个单词为key，单词个数作为value排序进行输出。C．在Shuffle阶段，会对map的输出按照key进行合并和排序。D．Reduce的过程将所属key下的value进行了叠加，计算出单词key的次数。
29. 以下关于MapReduce编程模型的描述正确的有哪些？A．MapReduce的编程模型包含Map和Reduce两个函数处理过程。B．对于map和reduce每个过程都由不同的计算机进行并行计算处理。C．Map的输出结果是一组＜key,value＞对，这是经过Map操作后所产生的中间结果。D．Reduce的工作是对相同key的value值进行归并处理。