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29、使用send和receive命令的通信属于（）。
A．管道通信系统
B．直接消息传递系统
C．间接消息传递系统
D．客户-服务器系统
参考答案和解析
直接消息传递系统
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In a run sparse-dense-mode multicast network， when rendezvous point down ， will the recipient receive the packets send by the source？why？
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What is the reason for configuring a passive interface on a router?（）A、Allows interfaces to share common IP addresses.B、Allows an interface to remain up without the aid of keepalives.C、Allows a router to send routing and not receive updates via that interface.D、Allows a routing protocol to forward updates that is missing its IP address.E、Allows a router to receive routing updates on an interface but not send updates via that interface.
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You have an Exchange Server 2010 Hub Transport server named Hub1. You install an application on a third-party server named Server1. You discover that the application cannot authenticate to remote servers. You need to ensure that the application can relay e-mail messages by using Hub1. What should you do？（）A、.Create a new Send connector.Add the TCP/IP address of Server1 to the Send connector .Modify the permissions for the Send connectorB、.Create a new Receive connector.Add the TCP/IP address of Server1 to the Receive connector .Modify the permissions for the Receive connectorC、.Add the TCP/IP address of Server1 to the default Receive connector .Create a message classification.Create a transport ruleD、.Add the TCP/IP address of Server1 to the Client Receive connector .Create a remote domain.Create a transport rule
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单选题You have an Exchange Server 2003 organization. You install an Exchange Server 2010 Service Pack 1 （SP1） Edge Transport server on the network. You need to ensure that the Edge Transport server can send and receive e-mail messages from the Internet for the organization. You configure the Exchange Server 2003 servers to send all e-mail for external recipients to the Edge Transport servers. What should you do on the Edge Transport servers？（）A
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考题
单选题You have an Exchange Server 2010 Hub Transport server named Hub1. You install an application on a third-party server named Server1. You discover that the application cannot authenticate to remote servers. You need to ensure that the application can relay e-mail messages by using Hub1. What should you do？（）A
.Create a new Send connector.Add the TCP/IP address of Server1 to the Send connector .Modify the permissions for the Send connectorB
.Create a new Receive connector.Add the TCP/IP address of Server1 to the Receive connector .Modify the permissions for the Receive connectorC
.Add the TCP/IP address of Server1 to the default Receive connector .Create a message classification.Create a transport ruleD
.Add the TCP/IP address of Server1 to the Client Receive connector.Create a remote domain.Create a transport rule
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考题
单选题What is the use of ERSPAN on N1kv？（）A
Send monitored traffic to a VLANB
Send monitored traffic to a remote VEM over L2C
Receive monitored traffic on a vEthernet interfaceD
Send monitored traffic to an IP destination
考题
填空题消息缓冲通信时，当发送者要发信息时，执行send系统调用命令，产生（）进入操作系统核心。
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