Cisco Certified Network Professional Practice Test 2026 – Your All-in-One Guide to Exam Success!

ARP throttling refers to a strategy designed to limit the number of Address Resolution Protocol (ARP) requests on a network. By doing so, it helps to mitigate issues such as ARP flooding, which can lead to network congestion and performance degradation. When a device needs to determine the MAC address associated with a particular IP address, it sends out ARP requests. If these requests are sent too frequently, it can create unnecessary traffic on the network and disrupt performance.

The concept of throttling involves setting a threshold for the maximum number of ARP requests that can be processed or sent over a certain period. When the threshold is reached, excess requests may be delayed or dropped, preventing overwhelming the network. This can be particularly important in larger networks where many devices are communicating simultaneously, and excessive ARP traffic can lead to a degradation of network performance.

While other options refer to different methods related to ARP, they do not accurately describe ARP throttling. Disabling ARP would hinder the fundamental function of mapping IP addresses to MAC addresses entirely, which is counterproductive. Techniques enhancing ARP replies could improve the efficiency of ARP without addressing traffic control. Similarly, enabling redundancy in ARP focuses on ensuring backup methods are available in case of failures but does