Hi folks,
To start off I'm new to these forums, and currently studying for my CCNA, I've almost completed my first Semester and onto the last exam.. however I have a problem.
Pretty much as soon as the new college term starts I have to take the last exam, at the moment though my tutor is away on holiday, and at any rate he's not too good at explaining things.
So as you can probably understand, I'm in need of some help and unsure where to go to get it.
If you could see your way fit to maybe just answering one of these questions I'd be very appreciative, as I'm at a loss as to what to do.
Generally I'm finding that I have found conflicting evidence or find that the questions are so ambiguous that, I'm unsure what to do and need some explaining I feel.
The reason I could do with some answers to the questions posted is that should I come up against similar questions in the exam, what would I mark as the answer?
anyway, lets get on and see the questions.
Question 1
Which of the following is a drawback of the CSMA/CD access method?
- Collisions can decrease network performance.
- It is more complex than non-deterministic protocols.
- Deterministic media access protocols slow network performance.
- CSMA/CD LAN technologies are only available at slower speeds than other LAN technologies.
This is question Q5 from the Chapter 9 exam.
The given answer here for the question is option 1, however I answered with option 4.
The reason I answered such is that I thought option one is really just a statement and more a drawback of half duplex than CSMA/CD.
It seems that I am wrong though, but can't see how the answer fits the question.
Question 2
Refer to the exhibit. A student working in the lab selects a cable that is wired as shown. Which connection types can successfully be made with this cable? (Choose two.)
- connecting a PC to a router's console port
- connecting two routers together via their fast ethernet ports
- connecting two switches together at gigabit speeds
- connecting a PC to a switch at Gigabit Ethernet speeds
- connecting two devices with the same interface type at Fast Ethernet speeds
This is Chapter 10's question number 1
In this question options 2 and 5 are deemed correct.
However I answered 2 and 3
The cable is a crossover cable
My question here is that ok, while I can see how option 3 is incorrect given the gigabit speeds, option 5 would seem like a trick question as you could connect a computer and a switch lets say as they both have the same interface type, but you wouldn't do it if you expected them to work.
While in option 5 there's a chance that you could be wrong, (if it's a trick question as hubs, switches, routers and pc's have the same interface type.) and there's the posibility that you could be right (given that if you were just talking about the devices that you would connect together with a crossover cable, not "any two devices with and RJ 45 interface")
In this situation would you always go for the answer that could be seen as partially correct? and does this follow suit throughout the Cisco courses? or does it change back and forth? sometimes you should pick trick answers and sometimes the trick answers are incorrect. as in my experience the exams are very ambiguously worded and don't define the boundaries of the questoins very well, in this predicament any answer could be taken either way, and in my experience in exam condions often are.
Question 3
The connection between routers B and C has been successfully tested. However, after rebooting router C, the administrator noticed the response time between networks 10.10.3.0 and 10.10.4.0 is slower. Ping between the two routers is successful. A trace route indicates three hops from router B to router C. What else can be done to troubleshoot the problem?
- Ping router B S0/1 connection from router C.
- Trace the connection between router B to router C S0/1.
- Issue a show ip route command in router B to verify routing is enabled.
- Issue a show ip interface brief command on router C.
This is question 5 from the chapter 11 exam.
In the example S0/0/0 between routers B & C is clearly down
The option Deemed as correct is option 4
I answered with option 3
My queston here is really, why wouldn't you use option 3 as it seem's just as valid as option 4 given the circumstances.
That's it for the questions I've had troubles with, if you managed to get this far, thank you for reading it again If you can help me out with just one answer I would be very grateful.
If you're reading this and on your way to completing your CCNA too, then becareful of questoins such as these I guess.
Either way, thanks for reading folks, It's much appreciated.
