Computer Networking
Alex is required to provide information on how many people are using the network at any one time. Which network will enable him to do so?

Server-based
Star
Peer-to-peer
Ethernet
Token-Ring

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Computer Networking
The data-link layer, in reference to the OSI model, specifies

the interface between the X.25 network and packet mode device
data link procedures that provide for the exchange of data via frames that can be sent and received
None of these
the virtual circuit interface to packet-switched service
All of these

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