Interview Questions Resolution

[Kalp.Patel93]

Hi,

I did interview for internship. I got asked the following questions. I was wondering if you guys can able to help me how to answer this questions.

1) You have this topology.You have PC 10 which you are patching to switch. However when you connect Ethernet cable, PC10 doesn't connect to switch (ping doesnt work bothside). How do you troubleshoot this? (ALL IP ARE STATICALLY ASSIGNED)

Answer: This is what I do firs, Check cable between PC 10 and switch, Check port on Switch, Check you assign IP to PC 10 properly, Last thing I do is check NIC on pc.

2) You have this topology. In this scenario, Router can talk to switch but Switch cannot talk to Router. How do you troubleshoot it?




Answer: Firewall Treat Router as outside and switch as Inside. So Switch cannot see router but router can see switch


3)You have networking device. It has 9 cards/modulus. All of them are identical however card no1, and no2 is not working where as others are working fine. How do you troubleshoot this problem?

Answer: First I will take out the cards which are faulty and test to see if it works individually,if not I will pass on info to electrical engineer to see if there is hardware fault.

FYI- THIS IS UPTO CCNA LEVEL BASED INTERVIEW

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for question #1: we can also try using the other port which is connected to a working station. or use a working cable.

for question #2: there could be policy in the firewall that prevents icmp coming from the switch.

for question #3: we can do some verification commands, like "show module" 

[Kalp.Patel93]

Sorry, I haven't done anything on firewall for CCNA as I got Routing and Switching cert.

So if they ask you this question in interview, we can say that right?

For q3) What if we cant see module under show module?

[bbb bbb · Accepted solution]

if the module is faulty we can check from the logs if there is a related alarm (show logging).. or we can coordinated with the vendor to assist you in troubleshooting the faulty module. there is a command called show tech-support, this will display alot of information regarding your device and the modules installed on it.

have a look on various verification commands but some are available to specific platforms

http://www.cisco.com/c/en/us/td/docs/routers/crs/software/crs_r4-2/adv_system/command/reference/b_advsys_cr42crs/b_advsys_cr42crs_chapter_0100.html

hope this help.

regards

[Kalp.Patel93]

Thank you

[bbb bbb]

you can mark posts as "answered" so that your posts will not be kept unanswered. :D