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The address resolution protocol (ARP) is used for:

  1. Finding the IP address from the DNS
  2. Finding the IP address of the default gateway
  3. Finding the IP address that corresponds to a MAC address
  4. Finding the MAC address that corresponds to an IP address
in Computer Networks by Veteran (52.2k points) | 2.3k views
+1
One additional question -->

Just think "IP and Port No" are enough to identify a process on a host  then what is the requirement of ARP ?
0
and RARP does option C?
+1
at router we dont know port number rt ... so ip+port could not identify

RARP Is option c
0
which protocol can be used for getting default gateway's IP???

3 Answers

+12 votes
Best answer

The address resolution protocol (ARP) is a protocol used by the Internet Protocol (IP) specifically IPv4, to map IP network addresses to the hardware addresses used by a data link protocol.

Show that option D is correct.

Ref: http://www.erg.abdn.ac.uk/users/gorry/course/inet-pages/arp.html

by Active (2.2k points)
selected by
+9 votes
ans d)
by Loyal (5.2k points)
+6
U should explain ur answers...
–2 votes
d.. finding the MAC address that correspondes to an IP address
by Active (2.3k points)
Answer:

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