正解:C
* The command tracert (or traceroute in some operating systems) is used to trace the route that a packet takes from the source to the destination. It displays the IP addresses and hostnames of the routers and devices along the path, as well as the time it takes for each hop.
* The command can help identify the issue of extreme latency by showing where the delay occurs in the network. For example, if the latency is high between the source and the first router, it may indicate a problem with the local network or the ISP. If the latency is high between two distant routers, it may indicate a problem with the intermediate network or the website's server.
* The command ipconfig is used to display the IP configuration of the local device, such as the IP address, subnet mask, default gateway, and DNS servers. It does not show the route or the latency of the packets to the destination.
* The command netstat is used to display the active connections and listening ports on the local device, as well as the protocol, local address, foreign address, and state of each connection. It does not show the route or the latency of the packets to the destination.
* The command ping is used to test the connectivity and the round-trip time of the packets to the destination. It does not show the route or the latency of each hop along the path. References:
* CompTIA Network+ N10-008 Study Guide, Chapter 3: Network Operations, Section 3.2:
Troubleshooting Methodology and Tools, Page 147-148
* Professor Messer's Network+ N10-008 Course Notes, Page 18
* Professor Messer's Network+ N10-008 Video Training Course, Section 3.2: Network Troubleshooting Tools, Video 3.2.2: Command Line Tools