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Home > Archive > CCDA/CCDP > November 2000 > got a questions about ccda..
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got a questions about ccda..
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| dear friends,
i got two questions of ccda that i having doubts which one is the right answer?
anyone can help me out and give the opinion
to the right answers?
thank u!
Q:which of the following method will allow ip workstation
to dynamically located router ? a)a HSRP b)workstation listen to routing protocol c)router located request d)proxy ARP e)RTMP
Q : How should the following networs be summarized ? 172.16.12.0/24 , 172.16.13.0/24 , 172.16.14.0/24 Ans:
a)172.16.0.0/16 b)172.16.14.0/24 c)172. which one is correct answer ? ____ ?
helen | |
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| To your second question, by default Route Summarization takes place for default mask. In the question you specified is Class B network having default mask of 255.255.0.0. So 172.16.0.0/16 should be the answer.
Regarding first question, I don't have any idea. Just started for CCDA.
Note: Since you have asked about Route Summarization I will put some more info which you may already aware. Administratively we can set Route Summarization for a given number of bits, provided routing protocol supports VLSM.
If you find it usefull and want more info please put across. | |
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| dear friends,
thank u for the comments for the questions.
i choose that answers also.guess i am right
but to second questions i still in doubts...
anyone can give some opinion or comments
of the questions for number 2?
those who pass the ccda exams...
helen | |
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| The answer to question one should be A,B and D | |
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| Yes, the Q1 answer is ABD.
and the 2nd one should be : 172.16.12.0/22
Notice that it represents IP range :
172.16.12.0 - 172.16.15.255.
Also notice that 172.16.0.0/16 is also a correct answer, it will cost a lot more IP address space. | |
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| Um...wait. Why's the answer to #1, ABD? Offhand I'd have thought just A. For B: this is an IP workstation...when do they ever listen to routing protocols to find routers? And which routing protocol? As far as I know offhand, the only case I remember where that happened was with Appletalk. And as for C: Proxy ARP? That only allows an intermediate device (like a router) to pass on an ARP request on behalf of a client, and that is only to find hardware addresses based on IP address. How/why would that be used to find a router?
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| From those choices I would say just B and E.
A) HSRP does not allow a client to dynamically locate a router, it just allows fault-tolerant routing. The client's still looking for the same device (MAC and IP) only this is logical and not physical.
B) Most any Unix and things like NT can listen to RIP, so I'd say this is a valid answer
C)What? This answer makes no sense to me. If it referencing IRDP (ICMP Router Discovery Protocol) then it would be a valid answer. But the given answer makes no sense to me.
D)proxy arp does not locate routers. See previous post.
E)RTPM allows clients to locate their own routers. Appletalk is near idiot-proof. I am that idiot to whom it still makes no sense, though.
MadChef | |
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| Hmm. E would work, but that's Appletalk, not IP, and the question states an IP workstation, so I can't see it being the answer. I have no idea what C means either. And finally, I don't know about B. Yes, it's "possible" to set a workstation to listen to RIP, but that would mean enabling routing on it, and how many workstations have routing enabled? (Ie. none or close to none.) I see what you're saying about A, and with the current wording I'd agree...tiny differences in how the question might be asked would make all the difference though. So now I don't know what the answer is. 
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| I'm not sure of my answer. Might as well post it.
Which of the following method will allow an IP workstation to dynamically locate a router ?
a. a HSRP
b. workstation listen to routing protocol
c. router located request
d. proxy ARP
e. RTMP
My answer: B, D
A. HSRP – When the active router fails, the hot stanby router becomes the active router. The stanby router wasn’t dynamically located, it was dynamically switch.
B. It’s referring to RDP (Router Discovery Protocol).
C. I can't clearly understand also. But it’s possible on IPX, probably not IP. IPX workstation can broadcast to find a route to a server and locate a router.
D. If you use the wording of B, it sounds like – Router listen to ARP. Yes, the router pass the ARP request on behalf of a client but after the two nodes from different subnet establishes communication, packets between the 2 nodes pass through the router during communication. If it’s using the router, it locates the router.
E. As Kyle said, RTMP is apple.
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| quote:
Originally posted by Kyle Smith:
Hmm. E would work, but that's Appletalk, not IP, and the question states an IP workstation,
Doh! Missed that IP bit entirely.
Just a little lesson to you folks to remind you to read the question THOROUGHLY before answering.
And VanTech is right about B) referring to IRDP. For some reason I was thinking this was initiated by the client when in fact it's the router that sends the advert, just like in RTMP. He makes an intersting case for proxy arp, too.
MadChef
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| Correction again! Another trick question! B is unlikely the answer if I refer to RDP. B states that:
b)workstation listen to routing protocol
RDP (Router Discovery Protocol) is not using a routing protocol for discovery, it's ICMP based (also noted by MadChef). If B states "workstation listen to router" then B is part of the answer base from my theory. But MadChef's theory on RIP can make this the right answer.
I've been trick again! At least we're learning something! Helan, where did you get this question? | |
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| I find it amusing that in a post where I urge testers to read questions carefully, I AGAIN misread the question about listening to routing protocols. heh.
By the way, does anyone know a client that actually supports IRDP?
MadChef
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| I hate to beat a dying horse, but yes, again I don't think it's B because of the workstation thing. Also, I don't know about that Proxy ARP thing...seems a bit weak to characterize that behavior as "locating" the router. Anyone else starting to feel it has to be C, simply because of elimination? I think that it's just that it's worded so poorly (no offense Helan2) that we just don't really know what it is. But at this point I really don't think it's any of A, B, D or E. | |
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| Ok, this probably won't sit well with any of us (I know it doesn't with me), but I think have as close to a "definitive" answer as any. I just ran across this very "question" in the Cisco CCDA Training Kit, and they list just about all of them...this is considered "workstation-to-router redundancy", and is really what the question is asking (although again, no offense, but it's poorly worded here). The answer is ABD (and I don't know about C because I still don't know what it means, the way it's worded). The other ones listed in the training kit are explicit configuration (manually setting the workstation), RDP, and non-IP techniques like Appletalk RTMP and IPX "find network number".
Cisco wording strikes again. | |
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| Nice to see there's lot of guys discussing here.
Well, I will tell myself the Q1's answer should be ABD, if I am sitting in the exam.
But for reality, it's good to have open discussion. We will grow a lot faster upon exchanging ideas and knowledges.
Best Wishes,
Wan | |
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| quote:
Originally posted by helan2:
dear friends,
i got two questions of ccda that i having doubts which one is the right answer?
anyone can help me out and give the opinion
to the right answers?
thank u!
Q:which of the following method will allow ip workstation
to dynamically located router ? a)a HSRP b)workstation listen to routing protocol c)router located request d)proxy ARP e)RTMP
Q : How should the following networs be summarized ? 172.16.12.0/24 , 172.16.13.0/24 , 172.16.14.0/24 Ans:
a)172.16.0.0/16 b)172.16.14.0/24 c)172. which one is correct answer ? ____ ?
helen
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| Page 124 of the CCDA Exam notes says this:
"Which of the following methods will allow IP workstations to dynamically locate routers?
A. HSRP
B. Workstation listening to routing protocols
C. Proxy arp
D. RTMP
ANSWER A,B,D
HSRP functions so that two routers form one logical, or phantom, router so that when one fails, the other takes over without the workstation knowing about it. For example,
Appletalk workstations listening to RMTP updates can find the source of the updates
- the routers. Proxy ARP allows routers to respond as though they were the remote node
(on the remote node's behalf), therefore you
COULD consider that the workstation has indeed found the router."
Well, now Appletalk workstations qualifing as an "IP WORKSTATION" is debatable (appletalk tunneling over IP, maybe)
RMTP locates Appletalk routers, not IP routers. Even if you encapsulated Appletalk in IP using AURP, which is not brought up in
the context of the question, you are starting to get to far out into left field.
Answer A and D is stretching things a little to much to be a correct answer. (opinion)
Unix workstations can listen to router updates and learn where routers are, so Answer B would be correct.
Shows how a POORLY worded question can ruin a certifaction test. Lammeles CCNA book was not a bad book. The Sybex CCDA books however, both Exam notes and Study guide are poor, both with incorrect test questions (Blatently wrong answers, not just vague and could be wrong) and do not go into near enough depth and merely gloss over may subjects rather than covering it any detail. Hopefully that question was created for the Exam notes test and is not taken from the real CCDA exam (gulp).
Just my 2 cents, as opinions vary.
Steve
[This message has been edited by Steve_NTS (edited 11-16-2000).] | |
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| ---> Madchef Re: IRDP
I know Solaris, HP-UX, and IRIX support it,
but I'm not sure what else does...
Apparently NT4 does also, I found this blurb
at Microsoft knowledge base - http://support.microsoft.com/suppor...s/Q223/7/56.asp
[This message has been edited by Steve_NTS (edited 11-16-2000).] |
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