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GATE Overflow Test Series | Mixed Subjects | Test 4 | Question: 29

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Which of the following is correct? (Mark all the appropriate choices)

  1. Through Address Resolution Potocol (ARP), $(32-\text{bit})$ IP address is mapped into $(48-\text{bit})$ MAC address.
  2. In ARP, broadcast MAC address is used.
  3. ARP is used in $IPv4$ and $IPv6.$
  4. If the destination IP address is on a remote subnet, then ARP is not used.
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Options A and B are true.

C is false as in $IPv6,$ ARP is replaced by Neighbor Discovery Protocol.

Reference: https://superuser.com/questions/969831/why-is-arp-replaced-by-ndp-in-ipv6

D is false as in ARP, if the destination IP address is on a remote subnet, then ARP will be used to determine the hardware address of the default gateway.

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