I have 2 questions to submit here...
1) If there are several nodes attached to a 10/100 switch, and all NICs are
in full duplex mode, this means that CSMA/CD is not in effect, loopback is
turned off, and any station can transmit and receive concurrently. But what
happens when 2 or 3 of these stations want to transmit to one particular
station concurrently? Is the traffic buffered in the switch? Or is CSMA/CD
still in effect, even in full duplex mode, where they will sense the wire
and wait if busy?
2) In the diagram below of an 802.3 frame, what does the "SD" potion
signify?
| Preamble | SD | Dest. Add. | Source Add. | Length | DSAP | SSAP | Control
| Data | FCS |
Thank you in advance.
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