Which statement best describes tracert/traceroute?

Which statement best describes tracert/traceroute?

• A. A command that tests whether a host is reachable and shows its path.
• B. A command that shows the path between two devices; Windows uses tracert and Unix uses traceroute.
• C. A command that only pings without showing path.
• D. A command that updates routing tables automatically.

Answer: (B)

Traceroute reveals the path data takes from your machine to a destination by listing each hop (router) along the route and the time it takes to reach each hop. It works by sending probe packets with gradually increasing TTL values; when a router forwards a packet and its TTL expires, it sends back an ICMP Time Exceeded message, letting your tool record that hop and its round-trip time. This makes traceroute a path-discovery tool, showing the route rather than just answering “is it reachable.” Windows implements this as tracert, while Unix-like systems typically implement it as traceroute, which is why that statement is correct. The other descriptions miss the essential point that traceroute maps the route and provides per-hop timing, and they either imply only a ping or assert automatic routing changes, which traceroute does not do.

Traceroute reveals the path data takes from your machine to a destination by listing each hop (router) along the route and the time it takes to reach each hop. It works by sending probe packets with gradually increasing TTL values; when a router forwards a packet and its TTL expires, it sends back an ICMP Time Exceeded message, letting your tool record that hop and its round-trip time. This makes traceroute a path-discovery tool, showing the route rather than just answering “is it reachable.” Windows implements this as tracert, while Unix-like systems typically implement it as traceroute, which is why that statement is correct. The other descriptions miss the essential point that traceroute maps the route and provides per-hop timing, and they either imply only a ping or assert automatic routing changes, which traceroute does not do.