Responsibility of Data Link Layer

RZetlinRZetlin Inactive Imported Users Posts: 155
in Network+
I have this question on layer 2 which I am stumped on:

Which one of the following is not a responsibility of the data link layer?

1) Node Addressing
2) Guaranteed delivery of the data
3) Flow Control
4) Error detection

I can confirm that it's not 3 or 4.

I have no idea what is node addressing is.

Isn't guaranteed delivery of the data done by TCP, the transport layer?
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