What could be an issue?

Instructions:
– Enter IOS commands on the device to verify network operation and answer the multiple questions.
– THIS TASK DOES NOT REQUIRE REVICE CINFIGURATION.
– Click the device icon to gain access to the console device. No console or enable passwords are required.
– To access the multiple choice questions, click the numbered boxes on the left of the top panel.
– there are four multiple-choice questions with this task. Be sure to answer all four questions before clicking Next.
Examine R2 configuration, the traffic that is destined to R3 LAN network sourced from Router R2 is forwarded to R1 instead R3. What could be an issue?
R2#traceroute 10.10.12.1 source 10.10.10.1
Type escape sequence to abort
Tracing the route to 10.10.12.1
VRF info: (vrf in name/id, vrf out name/id)
1 172.16.14.1 0 msec 1 msec 0 msec
2 172.16.14.1 !H !H *
R2#
A. RIPv2 routing updates are suppressed between R2 and R3 using passive interface feature.
B. RIPv2 enabled on R3, but R3 LAN network that is not advertised into RIPv2 domain.
C. No issue that is identified; this behavior is normal since default route propagated into RIPv2 domain by Router R1.
D. RIPv2 not enabled on R3.

Correct Answer: D
Explanation/Reference:
First we should check the routing table of R2 with the "show ip route" command.

In this table we cannot find the subnet "10.10.12.0/24" (R3 LAN network) so R2 will use the default route advertised from R1 (with the command "default-information originate" on R1) to reach unknown destination, in this case subnet
10.10.12.0/24 -> R2 will send traffic to 10.10.12.0/24 to R1.
Next we need to find out why R3 did not advertise this subnet to R2. A quick check with the "show running-config" on R3 we will see that R3 was not configured with RIP ( no "router rip" section). Therefore, we can conclude RIPv2 was not enabled on R3.

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