Trace route is a computer network diagnostic tool for displaying the route (path) and
measuring transit delays of packets across an Internet Protocol (IP) network. It sends a
sequence of three Internet Control Message Protocol (ICMP) echo request packets
addressed to a destination host. The time-to-live (TTL) value, also known as hop limit, is
used in determining the intermediate routers being traversed towards the destination. During
routing, each router reduces packets’ TTL value by

A.
3

B.
1

C.
4

D.
2

Explanation:

Reference:
http://www.packetu.com/2009/10/09/traceroute-through-the-asa/