Computer Networking
The standard suit of protocols used by the Internet, intranets, extranets, and some other networks.

TCP/IP
Internetwork processor
Protocol
Open Systems
Hybrid hub

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Computer Networking
The packets switching concept was first proposed

in the late 1980s for the Defense Ministry of US.
in the early 1960s for military communication systems, mainly to handle speech
in the late 1950s for Defense Ministry of US
None of these
All of these

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Computer Networking
You are working with a network that has the network ID 10.9.0.0 and contains 73 networks. In the next year, you will be adding an additional 27 branch offices to your company. For simplified management, you want to keep the most possible hosts per subnet. Which subnet mask should you management, you want to keep the most possible hosts per subnet. Which subnet mask should you use?

255.240.0.0
255.224.0.0
255.254.0.0
255.252.0.0
255.248.0.0

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