Question

which of these is not a potential cause of data loss?
firewall
using the arp protocol
network congestion
human error

Explanation:

A firewall is a security - device that monitors and controls incoming and outgoing network traffic. It is designed to protect data, not cause data loss. The ARP protocol can be misused in attacks leading to data issues, network congestion can cause packets to be dropped (data loss), and human error like accidental deletion can lead to data loss.

Answer:

A. firewall