Computer Networking
Start and stop bits are used in serial communication for

Error correction
Synchronization
Slowing down the communication
Error detection

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

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

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Computer Networking
The packets switching concept was first proposed

None of these
in the early 1960s for military communication systems, mainly to handle speech
All of these
in the late 1950s for Defense Ministry of US
in the late 1980s for the Defense Ministry of US.

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