DATA LINK LAYER WIRED NETWORKS
INTRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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DHCP
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NAT
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DNS
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ARP
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Detailed explanation-1: -Address Resolution Protocol (ARP) The Address Resolution Protocol is a layer 2 protocol used to map MAC addresses to IP addresses. All hosts on a network are located by their IP address, but NICs do not have IP addresses, they have MAC addresses. ARP is the protocol used to associate the IP address to a MAC address.
Detailed explanation-2: -ARP and RARP ARP is the Address Resolution Protocol, used to translate between Layer 2 MAC addresses and Layer 3 IP addresses. ARP resolves IPs to MAC addresses by asking, “Who has IP address 192.168. 2.140, tell me.” An example of an ARP reply is “192.168. 2.140 is at 00:0c:29:69:19:66.”
Detailed explanation-3: -The ARP request packet contains the source MAC address and the source IP address and the destination IP address. Each host in the local network receives this packet.