ICND2 – Troubleshooting 2
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Question 1
[am4show have=’p2;’]Which two Cisco IOS commands, used in troubleshooting, can enable debug output to a remote location? (Choose two)
A. no logging console
B. logging host ip-address
C. terminal monitor
D. show logging | redirect flashioutput.txt
E. snmp-server enable traps syslog
Answer: B C[/am4show]
Question 2
[am4show have=’p2;’]Routers R1 and R2 are on the same network segment, and both routers use interface GigabitEthernet0/0. If R1 loses communication to R2, which two items should you check as you begin troubleshooting? (Choose two)
A. Verify that R2 is using 802.1q encapsulation.
B. Verify that the GigabitEthernet0/0 interfaces on R1 and R2 are configured with the same subnet mask.
C. Verify that the R1 GigabitEthernet0/0 interface is up and line protocol is down.
D. Verify that R1 and R2 both are using HDLC encapsulation.
E. Verify that R1 GigabitEthernet0/0 interface is up and line protocol is up.
Answer: B E[/am4show]
Question 3
[am4show have=’p2;’]After you configure a new router to connect to a host through the GigabitEthernet0/0 port of the router, you log in to the router and observe that the new link is down. Which action corrects the problem?
A. Use a crossover cable between the host and R1.
B. Use a straight through cable between the host and R1.
C. Configure the host to use R1 as the default gateway.
D. Use a rollover cable between the host and R1.
Answer: A[/am4show]
Hello, Q8. I knew that between a router and a host the cable to be used is the rollover, so that the answer should be D. What do you think?
I think Q8 is a bit of a trick question. It cannot be D because the question states the host is connected to GigabitEthernet 0/0. For the answer to be D, the host would have to be connected to the console port. In my mind, this scenario would be for testing, because who takes a host (PC) and connects it directly to a router, except maybe for testing in a network closet. At any rate, technically, hooking a PC directly to a router requires a crossover cable, but also in modern networks with MDIX, straight through would probably work as well. It's a trick question.
That’s right! 🙂
Routers R1 and R2 are on the same network segment, and both routers use interface GigabitEthernet0/0. If R1 loses communication to R2, which two items should you check as you begin troubleshooting? (Choose two)
A. Verify that R2 is using 802.1q encapsulation.
B. Verify that the GigabitEthernet0/0 interfaces on R1 and R2 are configured with the same subnet mask.
C. Verify that the R1 GigabitEthernet0/0 interface is up and line protocol is down.
D. Verify that R1 and R2 both are using HDLC encapsulation.
E. Verify that R1 GigabitEthernet0/0 interface is up and line protocol is up.
How would this be B and C ? You lose Communication so the configuration is correct. You would not lose communication it the configuration was incorrect. You would never have communication. I am think this is c an e any help with this ?
When R1, R2 lose communication, first we check if status is up , protocol is up (Layer 1 and 2 are good) → Answer E is correct. Then we still need to check layer 3 → Answer B is correct.
So to make sure R1 and R2 can communicate, we have to check Layers 1,2,3.
Hope this help.
I agree with Anonymous. C, E