CompTIA Cloud+ Practice Test

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What command can be used to diagnose packet loss when troubleshooting network connectivity issues?

traceroute
ipconfig
arp
ping

The correct answer is: traceroute

The command that can effectively diagnose packet loss when troubleshooting network connectivity issues is ping. This command sends Internet Control Message Protocol (ICMP) echo request packets to a specified destination and waits for an echo reply. By doing so, it measures the round-trip time for these packets to travel to the destination and back. Additionally, ping provides insights into packet loss by displaying how many packets were sent and how many were received, allowing a user to understand whether there are any connectivity issues affecting the network. While traceroute can help identify routing paths and potential bottlenecks along the route, it does not specifically measure packet loss. The ipconfig command is used to display network configuration details for the network interfaces on a system, which can be useful in troubleshooting but does not diagnose packet loss directly. The arp command is for viewing and modifying the ARP (Address Resolution Protocol) cache, which relates to mapping IP addresses to MAC addresses but is not directly involved in diagnosing packet loss. Hence, utilizing the ping command is the most effective way to diagnose packet loss in a network.