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单选题
A technician at a company providing online, real-time media streaming to the Internet needs a network technology that will reduce bandwidth while delivering high throughput. Which of the following can the technician implement to fit these requirements?（）
A
Subnetting
B
Unicast
C
Broadcast
D
Multicast
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DHCPB
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SubnettingB
UnicastC
BroadcastD
Multicast
考题
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224.0.0.1B
255.0.0.0C
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255.255.255.0
考题
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Remotely connect to the user's laptop and review the network configuration settingsB
Ping the web server from inside the network to ensure it is still up and running.C
Check to make sure the company's website is accessible from the Internet.D
Ensure the Ethernet cable is securely plugged into the user's laptop
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Router#copy tftp flashB
Router(config)#restore flashC
Router(config)#repair flashD
Router#copy flash runE
Routercopy start flashF
Router#copy start flash
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单选题The user cannot access some Internet websites, but can connect to resources inside the local network. The technician successfully uses the ping command to test the user’s connectivity. Which of the following commands can the technician run NEXT to troubleshoot the issue?（）A
net /?B
ipconfig /flushdnsC
netstat -rD
nbtstat -R
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