Computer Networking
You have a class A network address 10.0.0.0 with 40 subnets, but are required to add 60 new subnets very soon. You would like to still allow for the largest possible number of host IDs per subnet. Which subnet mask should you assign?

255.254.0.0
255.255.255.255
255.248.0.0
255.240.0.0
255.252.0.0

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Computer Networking
The difference between a multiplexer and a statistical multiplexer is

Multiplexers often waste the output link capacity while statistical multiplexers optimize its use
None of these
Multiplexers use Time Division Multiplexing (TDM) while statistical multiplexers use Frequency Division Multiplexing (FDM)
Statistical multiplexers need buffers while multiplexers do not need buffers
Multiplexer use X.25 protocol, while statistical multiplexers use the Aloha protocol

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