Computer Networking
You have a network ID of 192.168.10.0 and require at least 25 host IDs for each subnet, with the largest amount of subnets available. Which subnet mask should you assign?

255.255.255.255
255.255.255.240
255.255.255.192
255.255.255.224
255.255.255.248

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Computer Networking
The packets switching concept was first proposed

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

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