What is the purpose of ARP?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Prepare for the Cyber Fundamentals Block 3 Test with our engaging quiz. Tackle multiple choice questions featuring hints and detailed explanations. Enhance your cyber security expertise and feel confident on exam day!

Multiple Choice

What is the purpose of ARP?

Explanation:
ARP translates an IPv4 address into the MAC address of the device on the local network. On an Ethernet LAN, devices need the hardware (MAC) address to actually deliver a frame, even though routing uses the IP address. When a host wants to send to a certain IP, it first checks its ARP cache. If it doesn’t know the MAC, it broadcasts an ARP request asking, “Who has this IP? tell me your MAC.” The device that owns that IP replies with its MAC address, and the sender caches this mapping for future use. This lets IP traffic be carried over the local link by the correct hardware address. ARP is not about domain names (DNS), encrypting traffic, or assigning IPs (DHCP).

ARP translates an IPv4 address into the MAC address of the device on the local network. On an Ethernet LAN, devices need the hardware (MAC) address to actually deliver a frame, even though routing uses the IP address. When a host wants to send to a certain IP, it first checks its ARP cache. If it doesn’t know the MAC, it broadcasts an ARP request asking, “Who has this IP? tell me your MAC.” The device that owns that IP replies with its MAC address, and the sender caches this mapping for future use. This lets IP traffic be carried over the local link by the correct hardware address. ARP is not about domain names (DNS), encrypting traffic, or assigning IPs (DHCP).

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy