You have a server that runs Windows Server 2008.You need to configure the server as a VPN server. What should you install on the server？ （）
A. Windows Deployment Services server role and Deployment Server role service.
B. Windows Deployment Services server role and Transport role Service.
C. Network Policy and Access Services server role and Routing and Remote Access Services role service.
D. Network Policy and Access Services server role and Host Credential Authorization Protocol role.
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You work as an application developer at Certkiller .com. You have recently created a Windows service application and need to define a Windows service class. What should you do？（）
A
B
C
D
Company has a Catalyst 6500 and you need to configure redundancy between the supervisormodules. With route processor redundancy （RPR+）， the redundant supervisor engine is fullyinitialized and configured， which shortens the switchover time if the active supervisor engine fails.Which three statements are true about the RPR + operations when the redundant supervisorengine switched over the failed primary supervisor engine？（）
A. Static IP routes are maintained across a switchover because they are configured from entries inthe configuration file
B. Information about dynamic routing states， maintained on the active supervisor engine， issynchronized to the redundant supervisor engine and is transferred during the switchover
C. Information about dynamic routing states， maintained on the active supervisor engine， is notsynchronized to the redundant supervisor engine and is lost on switchover
D. The Forwarding Information Base （FIB） tables are cleared on a switchover. As a result， routedtraffic is interrupted until route tables reconverge
E. Static IP routes are cleared across a switchover and recreated from entries in the configurationfile on the redundant supervisor engine
F. The Forwarding Information Base （FIB） tables are maintained during the switchover. As aresult， routed traffic continues without any interruption when the failover occurs
You are implementing an ASP.NET MVC 2 Web application that contains the following class. You create a strongly typed view that displays details for a Department instance. You want the view to also include a listing of department employees. You need to write a code segment that will call the ListEmployees action method and output the results in place. Which code segment should you use？（）
A. <%= Html.Action("ListEmployees", Model) %>
B. <%= Html.ActionLink("ListEmployees", "Department", "DepartmentController") %>
C. <% Html.RenderPartial("ListEmployees", Model); %>
D. <%= Html.DisplayForModel("ListEmployees") %>
CSMA是显著特点是一个设备要向网络发送数据，首先侦听网络上是否有数据发送，如果发现网络上有其设备正在发送数据，然后（）
A. 先暂停自己的发送动作
B. 固定的时间，然后直接发送
C. 直接发送，由其他设备负责安排发送
D. 此次发送
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