SCADA（Supervisory Control And Data Acquisition）即（）。
SCADA（Supervisory Control And Data Acquisition）即（）。
相关考题：
The data station usually means a(71)unit that provides data for transmission, that accepts transmitted data, and that performs all functions necessary for communication with another functional unit. Data stations may be divided into two kinds, the primary stations and the secondary stations, (72)control functions.In(73)data link control, the primary station is the data station that supports the primary control functions of the data link, generates commands to be transmitted, and interprets received responses. Specific responsibilities assigned to the primary station include initialization of control signal interchange, organization of data flow and actions regarding error control and error recovery functions. The secondary station executes data link control functions as (74)by the primary station, interprets received commands and (75) responses to be transmitted.A．performanceB．functionalC．capacityD．quality
Network equipment supporting the use of flow control mechanisms has been recently installed. What is the purpose of flow control in a data network?() A. It ensures that data is retransmitted if an acknowledgment is not received.B. It reassembles segments in the correct order on the destination device.C. It provides a mechanism for the receiver to control the transmission speed.D. It regulates the size of each datagram segment.E. All of the above are functions of flow control
（）系统，是英语Supervisory Control and Data Acquisition的缩写，即监督控制和数据采集系统。它是一种以监督为基础的计算机控制系统。它能收集远处现场的操作信息，并通过通信线路将远方信息传送到控制中心进行显示和报告，控制中心的操作员监视这些信息，并能向远方的设备发布监督性质的命令。
SCADA的英文全称是：（）A、Super Control And Data AcquisitionB、Supervisory Control And Data AcquisitionC、Super Connect And Data AcquisitionD、Supervisory Connect And Data Asking
What are two benefits of control plane policing？（）A、protection against denial of service （DoS） attacks at infrastructure routers and switchesB、 protection against known worm attacks in routers and switchesC、quality of service （QoS） control for packets that are sourced from the data plane of Cisco routers and switchesD、quality of service control （QoS） for packets that are destined to the control plane of Cisco routers and switchesE、quality of service （QoS） control for packets that are destined to the data plane of Cisco routers and switches
在将格式化的文本文件导入oracle时我们经常采用的是SQLLOAD命令，下面正确的写法是（）。A、sqlldr username/password control=data_fileB、sqlldr username/password rows=128control=data_fileC、sqlldr username/password control=data_filerows=64D、sqlldr username/password control=data_file.ctl
Network equipment supporting the use of flow control mechanisms has been recently installed. What is the purpose of flow control in a data network?（）A、It ensures that data is retransmitted if an acknowledgment is not received.B、It reassembles segments in the correct order on the destination device.C、It provides a mechanism for the receiver to control the transmission speed.D、It regulates the size of each datagram segment.E、All of the above are functions of flow control
Your database is running in ARCHIVELOG mode, and the database is open. You execute an RMAN backupand specify the KEEP clause.Which components are backed up when this option is specified?（）A、only the control file, the current SPFILE, and data filesB、only the current SPFILE and data files if autobackup is disabledC、only the data files and the archived redo logsD、the control file, current SPFILE file, data files, and archived redo logs
You run a 16-bit scientific data analysis package on your Windows 2000 Professional computer. The package consists of three components. The first component is a data acquisition application that monitors continuous data output from scientific instruments. The second component is a data analysis application that receives data from the data acquisition application by using shared memory. The third component is a data graphing application that displays the processed data in real time. The data analysis application communicates with the data graphing application by using OLE. When you attempt to analyze large data sets, your computer is not able to display data in real time. You install a second processor in your computer; only one processor is used while the package is running, even though task manager shows both processors. You want your data analysis package to use both processors. What should you do?（）A、Configure the data acquisition application to run in its own virtual DOS machine (VDM).B、Configure the data analysis application to run in its own virtual DOS machine (VDM).C、Configure the data graphing application to run in its own virtual DOS machine (VDM).D、Configure the virtual DOS machine for the data acquisition and data analysis applications to.have a hard affinity for processor 0. Configure the VDM for the data graphing application to.have a hard affinity for processor1. E、Configure the virtual DOS machine for the data acquisition to have a hard affinity for processor 0. Configure the VDM for the data graphing application to have a hard affinity for processor1.
You run a 16-bit scientific data analysis package on your Windows 2000 Professional computer. Thepackage consists of three components.The first component is a data acquisition application that monitors continuous data output fromscientific instruments. The second component is a data analysis application that receives data from thedata acquisition application by using shared memory. The third component is a data graphingapplication that displays the processed data in real time.The data analysis application communicates with the data graphing application by using OLE. When youattempt to analyze large data sets, your computer is not able to display data in real time. You install asecond processor in your computer. Only one processor is used while the package is running, even thoughtask manager shows both processors.You want your data analysis package to use both processors. What should you do?（）A、Configure the data acquisition application to run in its own virtual DOS machine (VDM). B、Configure the data analysis application to run in its own virtual DOS machine (VDM). C、Configure the data graphing application to run in its own virtual DOS machine (VDM). D、Configure the virtual DOS machine for the data acquisition and data analysis applications to have a hard affinity for processor 0. Configure the VDM for the data graphing application to have a hard affinity for processor1. E、Configure the virtual DOS machine for the data acquisition to have a hard affinity for processor 0.Configure the VDM for the data graphing application to have a hard affinity for processor1.
You are implementing an ASP.NET page that will retrieve large sets of data from a data source. You add a ListView control and a DataPager control to the page. You need to ensure that the data can be viewed one page at a time. What should you do？（）A、Set the DataPager control’s PageSize property to the number of rows to view at one time.B、Set the DataPager control’s PagedControlID property to the ID of the ListView control.C、In the code-behind file， set the DataPager control’s Parent property to the ListView control.D、In the code-behind file， set the ListView control’s Parent property to the DataPager control.
ou create a page in an ASP.NET Web application. The page retrieves and displays data from a Microsoft SQL Server database. You need to create a data source that can connect to the database. What are two possible ways to achieve this goal？（）A、Use an ObjectDataSource control and set its TypeName property to System.Data.SqlClient.SqlConnection.B、Use a SqlDataSource control and configure its ConnectionString in the web.config file.C、Use an XmlDataSource control together with an Xml control that represents the database.D、Use a LinqDataSource control with entity classes that represent the elements in the database.
CPDLC的英文全文是（）。A、controller-pilot data link communicationsB、control pilot using data link communicationsC、communications passed by data link circuitD、control pilot using long distancecommunicationstechnology
单选题Which ARPA data should you use in order to determine if a close quarters situation will develop with a target vessel? （）ASet and drift of the currentBRelative track informationCPredicted time of CPADInitial range of acquisition
填空题（）系统，是英语Supervisory Control and Data Acquisition的缩写，即监督控制和数据采集系统。它是一种以监督为基础的计算机控制系统。它能收集远处现场的操作信息，并通过通信线路将远方信息传送到控制中心进行显示和报告，控制中心的操作员监视这些信息，并能向远方的设备发布监督性质的命令。
单选题Which control allows you to bind to data items that are returned from a data source and display them？（）AListView Web Server ControlBDetailsView Web Server ControlCDataList Web Server ControlDData Web Server Control
单选题如果要建立多人在线的服务器，以下代码正确的是（）AcreateServer（SinglePlayer，control/data/maps/book_ch4.mis）；BcreateServer（MultiPlayer，control/data/maps/book_ch4.mis）；CcreateServer（MultiPlayer，control/data/maps/book_ch4.mis）；DcreateServer（SinglePlayer，control/data/maps/book_ch4.mis）；
单选题You are operating your database in NOARCHIVELOG mode. Your most recent backup includes a copy of all of the data files and the control files taken when the current log sequence number was 45. You experience disk failure on the drive on which your SYSTEM tablespace data files are stored. At the time of the failure， the current log sequence number is 98. Which files should you restore to recover from the loss of the SYSTEM tablespace data files？（）AOnly the data files.BAll of the data files and the control files.COnly the data files belonging to the SYSTEM tablespace.DOnly the data files belonging to the SYSTEM tablespace and the control files.
多选题What are two benefits of control plane policing？（）Aprotection against denial of service （DoS） attacks at infrastructure routers and switchesBprotection against known worm attacks in routers and switchesCquality of service （QoS） control for packets that are sourced from the data plane of Cisco routers and switchesDquality of service control （QoS） for packets that are destined to the control plane of Cisco routers and switchesEquality of service （QoS） control for packets that are destined to the data plane of Cisco routers and switches
单选题You are implementing an ASP.NET page that will retrieve large sets of data from a data source. You add a ListView control and a DataPager control to the page. You need to ensure that the data can be viewed one page at a time. What should you do？（）ASet the DataPager control’s PageSize property to the number of rows to view at one time.BSet the DataPager control’s PagedControlID property to the ID of the ListView control.CIn the code-behind file， set the DataPager control’s Parent property to the ListView control.DIn the code-behind file， set the ListView control’s Parent property to the DataPager control.