CompTIA Network+

Answer: D - Mtr combines traceroute and ping into a single network diagnostic tool.

Key Takeaway: Mtr investigates the network connection between the host mtr runs on and a user-specified destination host. After it determines the address of each network hop between the machines, it sends a sequence of ICMP ECHO requests to each one to determine the quality of the link to each machine. As it does this, it prints running statistics about each machine. Nbtstat is designed to help troubleshoot NetBIOS name resolution problems. Ns lookup is a command-line administrative tool for testing and troubleshooting DNS servers.