Computer Networking
What is the main reason the OSI model was created?

So Cisco could use the model.
So application developers can change only one layer's protocols at a time.
So different networks could communicate.
To create a layered model larger than the DoD model.

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Computer Networking
UDP is:

Connection oriented and unreliable
Connectionless and unreliable
Not a part of the TCP/IP suite
None of these
Connection orientated and reliable

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