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Exam 200-105 Question id=1843 Infrastructure Maintenance

Scenario
Refer to the topology. Your company has connected the routers R1, R2, and R3 with serial links. R2 and R3 are connected to the switches SW1 and SW2, respectively. SW1 and SW2 are also connected to the routers R4 and R5.

The EIGRP routing protocol is configured.
You are required to troubleshoot and resolve the EIGRP issues between the various routers. Use the appropriate show commands to troubleshoot the issues.

Instructions
* Enter the IOS commands on the device to verify the network operations and to find the answers for the multiple-choice questions.
* THIS TASK DOES NOT REQUIRE DEVICE CONFIGURATION.
* Click the device to gain access to the console of the 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 the Next button.

R1#show ip int brief Interface IP-Address OK? Method Status Protocol Ethernet0/0 192.168.16.1 YES NVRAM up up EthernetO/l unassigned YES NVRAM administratively down down Ethernet0/2 unassigned YES NVRAM administratively down down Ethernet0/3 unassigned YES NVRAM administratively down down Serial1/0 unassigned YES NVRAM administratively down down Serial1/1 192.168.13.1 YES NVRAM up up Serial1/2 unassigned YES NVRAM up down Serial1/3 192.168.12.1 YES NVRAM up up Serial2/0 unassigned YES NVRAM administratively down down Serial2/1 unassigned YES NVRAM up down Serial2/2 unassigned YES NVRAM administratively down down
R1 ! ! router eigrp 1 network 192.168.12.0 network 192.168.13.0 network 192.168.16.0 ! ip forward-protocol nd !
R6 ! ! R6#show ip int brief Interface IP-Address OK? Method Status Protocol Ethernet0/0 192.168.16.6 YES NVRAM up up EthernetO/l unassigned YES NVRAM administratively down down Ethernet0/2 unassigned YES NVRAM administratively down down Ethernet0/3 unassigned YES NVRAM administratively down down Serial1/0 unassigned YES NVRAM administratively down down Serial1/1 unassigned YES NVRAM up down Serial1/2 unassigned YES NVRAM administratively down down Serial1/3 unassigned YES NVRAM administratively down down Loopback0 10.6.6.6 YES NVRAM up up
R6 ! ! router eigrp 1 network 10.6.6.6 0.0.0.0 ! ip forward-protocol nd !

Router R6 does not form an EIGRP neighbor relationship correctly with router R1. What is the cause for this misconfiguration?

A. The К values mismatch.
B. The AS does not match.
C. The network command is missing.
D. The passive-interface command is enabled.

The link from R1 to R6 is shown below:

As you can see, they are both using e0/0. The IP addresses are in the 192.168.16.0 network:
R1 ! ! R1#show ip int brief Interface IP-Address OK? Method Status Protocol Ethernet0/0 192.168.16.1 YES NVRAM up up EthernetO/l unassigned YES NVRAM administratively down down Ethernet0/2 unassigned YES NVRAM administratively down down Ethernet0/3 unassigned YES NVRAM administratively down down Serial1/0 unassigned YES NVRAM administratively down down Serial1/1 192.168.13.1 YES NVRAM up up Serial1/2 unassigned YES NVRAM up down Serial1/3 192.168.12.1 YES NVRAM up up Serial2/0 unassigned YES NVRAM administratively down down Serial2/1 unassigned YES NVRAM up down Serial2/2 unassigned YES NVRAM administratively down down
R6 ! ! R6#show ip int brief Interface IP-Address OK? Method Status Protocol Ethernet0/0 192.168.16.6 YES NVRAM up up EthernetO/l unassigned YES NVRAM administratively down down Ethernet0/2 unassigned YES NVRAM administratively down down Ethernet0/3 unassigned YES NVRAM administratively down down Serial1/0 unassigned YES NVRAM administratively down down Serial1/1 unassigned YES NVRAM up down Serial1/2 unassigned YES NVRAM administratively down down Serial1/3 unassigned YES NVRAM administratively down down Loopback0 10.6.6.6 YES NVRAM up up
But when we look at the EIGRP configuration, the “network 192.168.16.0” command is missing on R6.
R1 ! ! router eigrp 1 network 192.168.12.0 network 192.168.13.0 network 192.168.16.0 ! ip forward-protocol nd !
R6 ! ! router eigrp 1 network 10.6.6.6 0.0.0.0 ! ip forward-protocol nd !