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IT Interview Questions:What is ARP?
Information Technology (IT) Interview Questions and Answers
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IT Interview Questions:What is ARP?
What is ARP Cache Poisoning?
Address Resolution Protocol (ARP) is a protocol
for mapping an Internet Protocol address (IP address) to a physical machine
address that is recognized in the local network. For example, in IP Version
4, the most common level of IP in use today, an address is 32 bits long. In
an Ethernet local area network, however, addresses for attached devices are
48 bits long. (The physical machine address is also known as a Media Access
Control or MAC address.) A table, usually called the ARP cache, is used to
maintain a correlation between each MAC address and its corresponding IP
address. ARP provides the protocol rules for making this correlation and
providing address conversion in both directions.
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