Computer Networking
What does the passive command provide to dynamic routing protocols?

Stops the router from receiving any dynamic updates.
Stops the router from sending any dynamic updates.
Stops an interface from sending or receiving periodic dynamic updates.
Stops an interface from sending periodic dynamic updates but not from receiving updates.

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

the virtual circuit interface to packet-switched service
None of these
All of these
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

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