10 points

QUESTION 1

1. Which of the following would be a reason why traceroute would fail?

   	1.	The number of hops between the systems was more than 15
   	2.	The destination is unreachable
   	3.	The number of hops between the systems was more than 9
   	4.	one of the routers in the path did not respond to ICMP requests

10 points

QUESTION 2

1. How many hops is IP Record Route limited to?

   	1.	1
   	2.	9
   	3.	15
   	4.	254

10 points

QUESTION 3

1. What is the purpose of the TTL field?

   	1.	To force a packet to be discarded if it gets caught in a routing loop
   	2.	To allow the routers to determine if a host is reachable before forwarding the packet
   	3.	To discard packets that would cause a broadcast storm
   	4.	To allow strict source routing.