Question

question 3
1 pts
i exist on the data link layer of the osi model. i discover ipv4 addresses associated with private networks. i also map network addresses to physical hardware. what protocol am i?
hypertext transfer protocol (http)
address resolution protocol (arp)
internet control message protocol (icmp)
dynamic host configuration protocol (dhcp)

Explanation:

• HTTP: It is an application - layer protocol for transferring hypertext (web pages). It has nothing to do with mapping network addresses to hardware or working at the data - link layer.
• ARP: The Address Resolution Protocol (ARP) operates at the data - link layer. Its main function is to map IPv4 addresses (network addresses) to Media Access Control (MAC) addresses (physical hardware addresses).
• ICMP: The Internet Control Message Protocol (ICMP) is a network - layer protocol. It is used for diagnostic and error - reporting purposes in IP networks, not for address mapping.
• DHCP: The Dynamic Host Configuration Protocol (DHCP) is an application - layer protocol. It is used to assign IP addresses and other network configuration parameters to devices on a network, not for mapping network addresses to physical hardware.

Answer:

B. Address Resolution Protocol (ARP)