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CCNA 2012 Practice Exam:
Troubleshooting Routers... And PCs!
From Chris Bryant, CCIE #12933
"The Computer Certification Bulldog"
Even when you're primarily working with Cisco switches and routers, there's a really good chance you're still going to work with PCs troubleshooting on occasion ....
... even if it's your own PC!
With that in mind, here's a new set of CCNA practice troubleshooting questions for you that involve both the routers and those dreaded end user PCs!
With these questions in particular, be sure that your answers include any options you would need with the command in question.
Be sure to take advantage of these other TBA CCNA and CCENT training resources...
3. Referring to those asterisks in the 8th and 9th rows -- there would have been 21 more rows of them if I hadn't entered the escape sequence.
Which is what, by the way? :)
4. Which of the following situations would result in the physical state of a Serial interface being up, but the logical state being down?
A. Missing clockrate
B. Lack of LMI (Frame Relay)
C. Cable drops out of interface
D. Mismatch in the encap type
Answers right after this VERY important opportunity - for you!
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Let's get to those answers!
1. To display the MAC-to-IP address mapping table on a PC, run arp -a. (Don't just run "arp".)
2. Here, we ran traceroute 10.1.1.1.
Run traceroute on a router, run tracert on a PC.
3. The escape sequence for traceroute and ping is ctrl-shift-6 twice, one right after the other.
4. (A, B, D). Any missing clockrate, missing LMI, or encapsulation mismatch will result in "Serialx is up, line protocol is down". If the cable is missing or bad, or the interface isn't open, Serialx will be down or administratively down.
Thanks for taking today's practice exam and for making TBA part of your CCNA success story!
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All of this - and you're paying around $5 an hour for the videos.
Beats going into hock for thousands of dollars ... and you can click this widget to watch the first two OSPF lessons free - a full and free hour of my Video Boot Camp training!
