[单选] You are creating a Windows Communication Foundation (WCF) service based on WSHttpBinding. New audit requirements dictate that callers must be authenticated on every call to ensure that their credentials have not been revoked.You need to ensure that the service will not cache the security request token. What should you do?（）

关键字之间使用（）分隔。 冒号。 顿号。 逗号。 分号。 买卖合同规定：“交货数量5000吨，2009年9月或10月份装运”，那么在9月1日至10月31日这段时间内任何一天将货物装运出口都可以，但不得分批装运。 A new router is added to an existing HSRP standby group. One of the existing routers is in anactive state， the other is in a standby state. Under what circumstance will the new router becomethe active router？（） The new router will become active immediately because it’s the newest router introduced intothe group。 The new router can become active only when the existing active router and the existing standbyrouter become unavailable。 The new router has a lower priority value。 The new router will never become active unless the existing active router becomes unavailable。 The new router has preempt configured and a higher priority。 The new router has a higher priority value。 Linux有哪些特点？ Certkiller .com has a server that runs on Windows Server 2008. The server also has an instance of Active Directory Lightweight Directory Services （AD LDS） running.  In order to test AD LDS， you need to replicate the AD LDS instance on a test computer located on the network.  What should you do to achieve this objective（） Execute AD LDS Setup wizard on the test computer to create and install a replica of AD LDS.。 Execute repadmin/bs  command on the test computer。 Install and configure a new AD LDS instance on the test computer by copy and pasting the entire partition on the test computer。 Execute the Dsmgmt command on the test computer and create a naming context。 You are creating a Windows Communication Foundation (WCF) service based on WSHttpBinding. New audit requirements dictate that callers must be authenticated on every call to ensure that their credentials have not been revoked.You need to ensure that the service will not cache the security request token. What should you do?（）