I see a question related to this in CCNA where host on network A has to know the hadware address of host B , so it sends a ARP request and the question is who will answer this question ?
the give answer is the default gateway of network A will send a resposne to thsi ARP ..
But I am not sure about this please clarify .
1 )Host must be configured with a default gateway .
2) let us presume that host has already resolved its arp address
3) looking at dest ip address host will know that this machine is not on local network A , so it has to send this packet to default gateway of network A
4) as it already has hardware address of defau;t gateway .it will simply build the packet and send it across to it .
5) it will never raise a ARP query for this
please suggest ? is somthing wroing in question or my understanding