Refer to the topology and switching table shown in the graphic.
Host B sends a frame to Host C. What will the switch do with the frame?
A.
Drop the frame
B.
Send the frame out all ports except port 0/2
C.
Return the frame to Host B
D.
Send an ARP request for Host C
E.
Send an ICMP Host Unreachable message to Host B
F.
Record the destination MAC address in the switching table and send the frame directly to Host
C
Explanation:
why not D
Send an ARP request for Host C ?
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A switch does not know any connected device, unless the layer 2″mac address” is in it’s cam table. In this case, Host B is in the table and the switch sends out a arp request ff:ff:ff:ff:ff:ff:ff:ff to all connected interfaces, except f0/2. After Host C responds with it’s mac address, the packet will go to Host C. If Host B was not in the cam table, it would be added and the same process would occur.
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TOOK ICND 1 TODAY. QUESTION IS STILL VALID AS OF 30/06/2016.
Also, Jon is correct.
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