Computer Networking
Which three commands can be used to check LAN connectivity problems on a router?1. show interfaces2. show ip route3. tracert4. ping5. dns lookups

None of these
2 and 5
1 ,2 and 4
3 and 5

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

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

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Computer Networking
What is a stub network?

A network with more than one exit and entry point.
A network with more than one exit point.
A network with only one entry and no exit point.
A network that has only one entry and exit point.

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