I met a question on the CCNA exam which I got wrong and even though I found it on different websites with a few explanations available, I'm still confused about it.
The question is about what
arp entry will a host have in its
arp table after a successful ping to a another host on a different router. Now, through all my CCNA studies so far I've always been taught that the IP source and destination addresses do not change in the packet during the routing process, but only the MAC source and destination addresses change. However, the correct answer was indicating that both the
MAC addresses of the gateway were present in the
arp table of the sending host, and no sign of host B.
This got me confused. And if this is the case, how will the default-gateway router know the destination IP of the other host? It's probably just a tricky question but still... Any clear thoughts on that?
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