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Site Reliability Engineer (SRE) - Interview Questions
Explain APR. Also, what are the stages of this?
ARP stands for Address Resolution Protocol. ARP is a protocol that allows devices on local networks to communicate with each other. It enables devices on the same network to find each other’s IP address, MAC address, and other network information. In short, it is used to automatically assign IP addresses to network devices so they can talk to each other.

This process occurs in 3 main stages :

* Discovering an IP address (ARP packets are sent out).

* Resolving an IP address (the device looks up the IP address using its own IP address table).

* Using a MAC address (the device looks up the MAC address using its own MAC address table).

ARP packets work by sending out a request to find any devices that have an IP address associated with them. The device receiving the packet will reply with its own list of IP addresses and other information. Each device maintains a table of known addresses so it knows how to resolve IP addresses when necessary.
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