按照电子商务的模式，电子商务网站又可以分为以下几种类型：
What does a Layer 2 switch do if it receives a frame with a destination MAC address that is not found in its MAC address table?（） [" The frame is dropped."," The frame is addressed with a broadcast MAC address and sent out all ports."," The frame is sent out all ports except the receiving port."," An ARP request is sent out all ports except the receiving port."," A destination unreachable message is sent back to the source address."," None of the above."]
You are the network administrator for All servers run Windows Server 2003. You are creating a backup schedule for the main file server. You need to create a schedule so that backup jobs are completed in the shortest amount of time possible. What should you do?（） [" Schedule a normal backup every Sunday. Schedule incremental backups every Monday through Saturday."," Schedule a normal backup every Sunday. Schedule differential backups every Monday through Saturday."," Schedule a copy backup every day."," Schedule a normal backup every day."]
You are an administrator of a small business network. You have one dial-up account at an ISP and want all computers on your network connect to the Internet. You have enabled Internet connection sharing. You do not want to initiate this connection automatically when a request for Internet reaches your computer. What should you do? （） ["You should uncheck “Enable on demand dialing","Enable on-demand dialing","Enable sharing a modem on one computer on the network","Configure a DHCP Server","Disable Internet Connection Sharing"]
市场经济条件下政府经济职能有哪些？
韦伯·扬为培训广告人才撰写了《怎样成为广告人》和（）两部名著。
