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| CandyKueh 2002-04-01, 9:46 am |
| You are the administrator of a Windows 2000 Network. The Network currently has 60 clients computers configured as proxy clients. To dynamically manage IP addresses for these computers a DHCP server has been installed using a ascope of 172.41.64.0 the scope range 172.41.64.1 to 172.41.79.254 with a 20-bit mask has been configured. Users report that they cannot access information on any computer on the network. How can you correct this problem? (Choose 2)
A. Activate a scope
B. Authorize the DHCP Server
C. Change the scope range 172.41.64.1 - 172.41.79.255
D. Use a subnet mask of 255.255.193.0
E. Use a subnet mask of 255.255.248.0
F. Add a reservation for each of the client computers
What will be the answer?  | |
| cross36 2002-04-01, 10:12 am |
| Is there any additional information as other server numbers and gateways?
If not I would pick "A" & "C" | |
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| cross36 2002-04-01, 10:24 am |
| Sorry i meant to write "D". "C" can't be used for in a scope you can't use 255 as a ranged number, has to be 1 or 2 less.
"D" is right. Is this question from a dump? | |
| secondskin 2002-04-01, 11:39 am |
| Why is D correct. Firstly there is no such thing as a 193 subnet mask, I presume you meant 192, secondly why wouldnt the original mask of 240 work in this situation. (multiples of 16) | |
| KScheler 2002-04-01, 2:49 pm |
| How about A & B?
You have to authorize the server and activate the scope before the DHCP server can issue addresses. I've seen a question almost identical on transcenders. | |
| secondskin 2002-04-01, 3:01 pm |
| A & B would of been my choice as well | |
| Madmex 2002-04-01, 3:18 pm |
| I believe it is a and B also, You must activate a scope and authorize it in order for DHCP to issue IP addresses. | |
| KScheler 2002-04-01, 3:59 pm |
| CandyKueh:
If this question was taken from a dump site, please be aware that they are well known for providing incorrect answers. I believe sometimes they do it just to throw people off track. This question covers one of the first things that you need to learn about DHCP, authorize the server and activate the scope. If you learn to pick apart the questions to see what is really being asked, you will see that this question is asking why the clients cannot access anything on the network. Your first "software" (don't forget the physical layer, too) troubleshooting should be to run ipconfig /all on one of the clients to see if it is getting an IP from the DHCP server, if not, next, make sure the DHCP server is authorized and activated. Hope this helps.
KS | |
| anthonie 2002-04-01, 7:37 pm |
| quote:
This question covers one of the first things that you need to learn about DHCP, authorize the server and activate the scope.
Exactly! The question states that:
Users report that they cannot access information on any computer on the network.
This is because the clients are not getting the correct IP configurations. And to correct this problem, first you have to make sure that your DHCP server is authorize and your scope is activated. | |
| Zaraspook 2002-04-01, 8:06 pm |
| My two cents is, first of all, this question certainly has the strong appearance and smell of being from a dump. Certainly, not authorizing the DHCP server in Active Directory or activating the scope, either one or both, can prevent computers from accessing information on a network. So the correct answers could very well be both the choices A and B. We know choice C will not work because the broadcast address should not be used. As secondskin has already pointed out, there is no such 193 subnet, which is probably just a typo, but even the 255.255.192.0 subnet would not work for the referenced address scope range as the range incrementing value is 64, which is way too much for the address range, so choice D has to be wrong. Choice E, 255.255.248.0, will work because it has a range incrementing value of 8, which works for the configured address scope range as would the originally configured 20 bit subnet mask or 255.255.240.0 with a range incrementing value of 16. Finally, choice F is obviously wrong because address reservations are simply not used for this purpose.
Okay, my answers to this question would have to be choices A and B, because the originally configured 20 bit subnet mask works and is valid for the address scope range that has been configured. Therefore, either A or B or both is preventing the computers from accessing information on the network. Just my two cents! | |
| anthonie 2002-04-01, 8:41 pm |
| quote:
Originally posted by Zaraspook
My two cents is, ... Therefore, either A or B or both is preventing the computers from accessing information on the network. Just my two cents!
Well Zaraspook, your 2 cents are worth more than 20 bucks. | |
| CKMORE 2002-04-01, 8:44 pm |
| I believe A and B is correct | |
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| PotatoHead 2002-04-01, 9:54 pm |
| A and B are definitely right, the DCHP server won't issue addresses until its activated and authorized. | |
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| Zaraspook 2002-04-02, 1:38 am |
| Obviously, your still providing an incomplete question. The only reason that I can see a possibilty for choice E is to reduce the number of host from 4096 to 2048. There were only 60 clients on the network. A 20 bit mask provides for 4096 host and an incrementing value of 16, which will work with the configured address scope range, and a 21 bit mask will provide 2048 host and an incrementing value of 8, which also works with the configured address scope range. Still the DHCP server must be authorized in the Active Directory and the scope must be activated. The configured 20 bit mask as presented will not prevent the computers on the network from accessing information on any other computer on the network.
Want a complete answer for your question, then supply us with a complete question. We will be happy to oblidge! | |
| CandyKueh 2002-04-02, 1:51 am |
| Hi!
That's the actual questions given for the exams. This is part of the reason why the 216 paper is most difficult one. Because the questions given is very conusing and the answer is very near to each other. You really need to read Bill's brain on what he is trying to ask!! hehe..... 
That's really the actual questions. No elimination of any words. Just don't have the diagram. And I assume that the DHCP is already authorize and running. This is what I can assume. But can I said that the subnet mask does NO matter? | |
| Zaraspook 2002-04-02, 1:52 am |
| Oops! E is a subnet mask of 255.255.224.0 instead of 255.255.248.0, and would increase the number of host to 8192 with an incrementing value of 32, which would be invalid for the configured address scope range. Therefore, E couldn't possibly be correct, that is, unless I'm missing something, which I don't think I am. | |
| Zaraspook 2002-04-02, 2:00 am |
| We would need the actual diagram to accurately figure out the answer. Without the actual diagram, we are just guessing. Sorry! | |
| anthonie 2002-04-02, 2:26 am |
| Zaraspook is right. We need the exhibit to figure out the answers.
If the DHCP is on a different subnet, then the subnet mask DOES matter. In addition to that, there is also a need to have a DHCP Relay Agent.
Zaraspook, agree? | |
| likuid 2002-04-02, 4:20 am |
| break it down...it's easy
172.41.64.1 and 172.41.79.254
x.x.01000000.x
x.x.01010001.x
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x.x.010xxxxx.x=x.x.111(bits)for subnet
255.255.224.0 is the subnet so both subnet answers are out the window
rules for subnetting: no host can have 255 so that answer is out
reservation? that's from left field the problem is all host not just a desired group.It's out too.
activate lease and authorize DHCP is deducted. elementary...
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| likuid 2002-04-02, 4:28 am |
| It's hard to examine some question, but I believe there shouldn't be any assumption made. the fact that they have not mentioned activation and authorization in the question and listed them as answers make for easy deduction work. logical. The fact that the rest of the answers don't solve the problem strenghten the the solution. right. right. | |
| Zaraspook 2002-04-02, 8:58 am |
| Agree, there could be any number of variables adding to the complexity of the question. | |
| KScheler 2002-04-02, 10:05 am |
| I agree with likuid, you can't assume anything. The questions do not say that the DHCP server is authorized and gives that as one of the choices. Like I said in an earlier reply, I have been using Transcenders for this exam and I have seen a question quiet near those 2 with the only difference being the Scope range and subnet masks offered and Transcender's answer is to authorize and activate. Once again, be very careful using dumps. Always check the answers because many are incorrect and this is one of the best places to start. Everyone's hear to help one another. | |
| CandyKueh 2002-04-02, 8:14 pm |
| I received some good ideas from other forum.
my 2 cents
In the first example, "scope of 172.41.64.0, the scope range of 172.41.64.1 to 172.41.79.254 with a 20-bit mask (255.255.240.0)" - the scope of 172.41.64.0 is kind of a "mis-label". (The scope label actually gets automatically defined when you define the scope range). In this example, the scope range of 172.41.64.1 to 172.41.79.254 with a 20-bit mask, you are actually defining a portion of the scope 172.41.16.0
To make things right, first delete the abortion scope and then you could create a new scope using the range of 172.41.64.1 to 172.41.79.254 with a 18-bit mask (255.255.192.0).
And for the second example, - .... "scope 172.41.48.0 has been configured with the range 172.41.48.1 to 172.41.48.255 with a 20-bit mask." You could correct the problem with a new scope using the range 172.41.48.1 to 172.41.48.255 and a 21-bit mask (255.255.248.0) to define the scope 172.41.8.0
Does it make sense? | |
| CandyKueh 2002-04-02, 8:17 pm |
| Some candidates provided me the diagram below in text:
The Exhibit
Dhcp server 172.41.47.200 (green tag)
Scope [172.41.48.0] (red tag) Range 172.41.48.1 - 172.41.48.255
172.41.48.0 /19 (255.255.224.0) will give this subs DHCP and scope on same sub
# ID Range Broadcast
1 172.41.32.0 172.41.32.1 - 172.41.63.254 172.41.63.255
2 172.41.64.0 172.41.64.1 - 172.41.95.254 172.41.95.255
172.41.48.0 /21 (255.255.248.0) will give this subs DHCP and scope on different subs
# ID Range Broadcast
5 172.41.40.0 172.41.40.1 - 172.41.47.254 172.41.47.255
6 172.41.48.0 172.41.48.1 - 172.41.55.254 172.41.55.255
I guess the DHCP server is authorized. (with green tag) | |
| KScheler 2002-04-02, 8:50 pm |
| Quote: Scope [172.41.48.0] (red tag) Range 172.41.48.1 - 172.41.48.255
Red Tag would indicate scope not activated. | |
| ckpodzo 2002-04-08, 10:08 am |
| I am working on my MCP exam for next two weeks.
I know fact and by heart that the right and answer is A & B because the DHCP server suppose to be authorize the server and activate the scope before the DHCP server can issue addresses. | |
| CandyKueh 2002-04-08, 9:27 pm |
| Yup, Scope is NOT activated (red tag) but Server is authorised (red tag).
The server must be authorised to release the activated scope IP addresses to clients, if the scope is giving the problem, the IP will not be release as well.
Furthermore the 20-bit mask is giving problem. Let's take a look at the IP range given in the scope.
Therefore answer B is definitely incorrect for both Questions. Because the DHCP Server is already authorized (with green tag). | |
| sharnsharn 2002-04-09, 7:53 am |
| remember you start off with the simplest thing first why would you think of othere things before activating the scope and dhcp i think a& b is definatly the answer |
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