Computer Networking
What can cause a problem with communication with a client by name but not by IP address?

The default gateway
None of these
The IP address
Static files such as an LMHOSTS file or a DNS database
Subnet mask

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Computer Networking
The network layer, in reference to the OSI model, provide

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

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