架空煤气管道与水管、热力管、燃油管、和不燃气体管在同一支柱或桥架上下的垂直距离宜小于（）mm。 250。 500。 750。 1000。
Your network contains a server that runs Windows Server 2008 R2. The server is configured as an enterprise root certification authority （CA）. You have a Web site that uses x.509 certificates for authentication. The Web site is configured to use a many-to-one mapping. You revoke a certificate issued to an external partner. You need to prevent the external partner from accessing the Web site. What should you do（） Run certutil.exe -crl.。 Run certutil.exe -delkey.。 From Active Directory Users and Computers， modify the membership of the IIS_IUSRS group.。 From Active Directory Users and Computers， modify the Contact object for the external partner.。
您需要设计战略符合电子邮件的公司的要求。您应该做什么？（） 为S/MIME配置和发布适当的证书模板。部署组策略（GPO）以便基于这块模板的证书自动地是发布到所有的域用户。 指定组策略（GPO）和IPSec政策要求所有客户计算机使用Kerberos认证连接到邮件服务器。 为各邮件服务器， 从已经被信任的根CA获取一份SSL服务器证书。 要求IPSec加密被用于发送或接收电子邮件的所有TCP连接。
Your company has a main office and 15 branch offices. The company has a single Active Directory domain. All servers run Windows Server 2008 R2.You need to ensure that the VPN connections between the main office and the branch offices meet the following requirements: ¡¤All data must be encrypted by using en-to-end encryption. ¡¤The VPN connection must use compute-level authentication. ¡¤User names and passwords cannot be used for authentication What should you do？（） Configure an IPsec connection to use tunnel mode and preshared key authentication.。 Configure a PPTP connection to use version 2 of the MS-CHAP v2 authentication.。 Configure a L2TP/IPsec connection to use the EAP-TLS authentication.。 Configure a L2TP/IPsec connection to use version 2 of the MS-CHAP v2 authentication.。
圆锥台表面积为（）分之π乘以圆锥台斜高再乘以大圆外径加小圆外径之和。 5。 2d。 2π。 2。
You are preparing for a new installation of SQL Server 2005. You need to select the protocols that client computers might use to connect to the server.
Which two protocols can you use to achieve this goal？（）
