Refer to the exhibit.
How will the router handle a packet destined for 192.0.2.156?
A.
The router will drop the packet.
B.
The router will return the packet to its source.
C.
The router will forward the packet via Serial2.
D.
The router will forward the packet via either Serial0 or Serial1.
Router has pointed default router to 192.168.4.1 and this subnet is connected via
serial 2 interface.
Router does not have route for the 192.0.2.156. so it will use the default
gateway 192.168.4.1. A default route identifies the gateway IP address to which the router sends all IP packets for which it does not have a learned or static route.
The question is asking about 192.0.2.156, not 192.168.2.156 <– TRICKY
.
So the default route (gateway of last resort, 192.168.4.1) is taken. That subnet is out Serial 2.
0
0
S2 is default gateway.
When a router doesn’t know the destination address, it will use the default gateway ( identified by the gateway IP address) and send via the gateway.
0
0
.4.1 is the default route
0
0