Computer Networking
The main difference between synchronous and asynchronous transmission is

None of these
the clocking is derived from the data in synchronous transmission
the pulse height is different.
the bandwidth required is different
the clocking is mixed with the data in asynchronous transmission

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

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

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