What is true regarding this configuration for traffic received on interface 100?

Examine the commands entered on an AOS-CX switch:

What is true regarding this configuration for traffic received on interface 100?
A . The default next-hop address supersedes the two preceding next-hop addresses
B. The traffic is always dropped is the next-hop addresses are unreachable
C. The traffic will be routed with the IP routing table entries if the next-hop addresses are unreachable
D. The next-hop address of 1.1.1.1 is overwritten by the next-hop address of 2.2.2.2

View Answer

Answer: C

Explanation:

"interface null: equivalent to the policy drop policing action. Any packets matching the class criteria for that policy entry will be dropped and not routed any further." https://www.arubanetworks.com/techdocs/AOS-CX/10.05/HTML/5200-7300/index.html#GUID-DC7E5E47-8F31-4DE4-B257-1A68665B2AF4.html

More than one next hop can be assigned with an ACL and they work by priority (based on the sequence number: lower sequence number -> higher priority). So next-hop 2.2.2.2 will be used if 1.1.1.1 is not reachable. If both are unreachable, then the packet will be routed looking at the default routing table, if no specific entry will be found, then the pacjet will be routed to the default next hop defined in the ACL.