What two functions are provided by ARP? (Choose two.)
Question
What two functions are provided by ARP? (Choose two.)
Solution
The Address Resolution Protocol (ARP) provides two main functions:
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Resolving IPv4 addresses to MAC addresses: When a device needs to send data to another device on the same network, it needs to know the recipient's MAC address. If it only knows the recipient's IP address, it uses ARP to find out the corresponding MAC address.
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Maintaining a cache of mappings: Once ARP has resolved an IP address to a MAC address, it stores this information in an ARP cache. This means that if the device needs to send data to the same recipient in the future, it can simply look up the MAC address in the ARP cache, rather than having to send out a new ARP request. This makes the process more efficient.
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