CompTIA 220-802 Certification Practice Test

Answer: B -When troubleshooting a connection to a site, you can use tracert or traceroute to count the number of hops from the source to the destination host.

Key Takeaway: Tracert works by increasing the "time-to-live" value of each successive batch of packets sent. The first three packets sent have a time-to-live value of one. The next three packets have a TTL value of 2, and so on. When a packet passes through a host, the host normally decreases the TTL value by one, and forwards the packet to the next host. When a packet with a TTL of one reaches a host, the host discards the packet and sends an ICMP time-exceeded packet (type 11) to the sender. The tracert utility uses these returning packets to produce a list of hosts the packets have traversed en route to the destination. The three timestamp values returned for each host along the path are the delay values (typically in milliseconds) for each packet in the batch.