Your network contains a single Active Directory domain. The functional level of the forest is Windows Server 2008 R2. You need to enable the Active Directory Recycle Bin. What should you use（）
A、the Dsmod tool
B、the Enable-ADOptionalFeature cmdlet
C、the Ntdsutil tool
D、the Set-ADDomainMode cmdlet
Your network consists of an Active Directory forest that contains one domain named contoso.com AlI domain controllers run Windows Server 2008 and are configured as DNS servers You have two Active Directory-integrated zones ： contoso.com and nwtraders.com You need to ensure a user is able to modify records in the contoso.com zone. You must prevent the user from modifying the SOA record in the nwtraders.com zone What should you do（）
A、From the DNS Manager console， modify the permissions of the contoso.com zone.
B、From the DNS Manager console， modify the permissions of the nwtraders.com zone.
C、From the Actrve Directory Users and Computers console， run the Delegation of Control Wizard.
D、From the Actrve Directory Users and Computers console， modify the permissions of the Domain Controllers organizational unit （OU）.
半抗原检测叙述正确的是（）。
A、反应模式与克隆酶供体免疫测定相同
B、属双位点一步法测定
C、可使用酶扩大免疫技术（EMIT）测定
D、乙型肝炎表面抗原属半抗原
E、可用双抗体夹心法测定
下列哪些物质是缩血管性的（）。
A、血栓素A2（TXA2）
B、前列环素（PGI2）
C、乙酰胆碱
D、激肽
E、以上都是
沙门菌的血清分型抗原是（）。
A、O抗原
B、H抗原
C、F抗原
D、K抗原
E、Vi抗原
Your network contains a single Active Directory domain. All client computers run Windows Vista Service Pack 2 （SP2）. You need to prevent all users from running an application named App1.exe. Which Group Policy settings should you configure（）
A、Application Compatibility
B、AppLocker
C、Software Installation
D、Software Restriction Policies