You are creating a Windows Communication Foundation (WCF) service to process orders.The data contract for the order is defined as follows:[DataContract]public class Order{ [DataMember] public string CardHolderName { get; set; } [DataMember] public string CreditCardNumber { get; set; }}You have the following requirements: Enable the transmission of the contents of Order from the clients to the service. Ensure that the contents of CreditCardNumber are not sent across the network in clear text. Ensure that the contents of CreditCardNumber are accessible by the service to process the order.You need to implement the service to meet these requirements. What should you do?（） [" Add a DataProtectionPermission attribute to the CreditCardNumber property and set the ProtectData property to true."," Convert the DataContract to a MessageContract and set the ProtectionLevel property to SignAndEncrypt."," Change the data type of CreditCardNumber from string to SecureString."," Implement the CreditCardNumber property getter and setter In the setter, run the value of the CreditCardNumber through the MD5CryptoServiceProvider class TransformBlock method."]
从安全生产的角度考虑，签订劳动合同时应注意哪些事项？
Your network consists of a single Active Directory domain. The network contains 20 file servers that run Windows Server 2008 R2. Each file server contains two volumes. One volume contains the operating system. The other volume contains all data files. You need to plan a recovery strategy that meets the following requirements： èAllows the operating system to be restored èAllows the data files to be restored èEnsures business continuity èMinimizes the amount of time to restore the server What should you include in your plan？（） ["Windows Deployment Services （WDS）","Windows Automated Installation Kit （Windows AIK） and folder redirection","the Multipath I\/O feature and Volume Shadow Copies","the Windows Server Backup feature and System Image Recovery"]
Certkiller.COM已在北美和亚洲设有办事处。它有两个域的Active Directory林中。您被指派的任务，以减少所需的时间来验证用户从el.as. Certkiller.com域时，他们访问tests.na资源。 Certkiller.COM域。来实现这个任务，你应该怎么做呢（） ["创建一个从tests.na单向快捷信任。 Certkiller.COM到el.as. Certkiller.COM。","增加DEFAULTIPSITELINK站点链接的复制间隔","创建一个从el.as.单向快捷信任Certkiller.tests.na. Certkiller。","增加的所有连接对象的复制间隔。"]
关于封闭式基金的价格，下列说法正确的有（） ["当基金上市交易后，投资者只需关心其市价","在基金封闭以后，投资者应该主要关注其净值","存在溢价交易和折价交易","有发行价格和交易价格之分"]
管理信息系统按照管理应用层次分类可分为事务型管理信息系统、管理型管理信息系统和（）管理信息系统。
