And today's poser is ....

Q63. A company has designed a network, which has a DHCP server with a DHCP client placed on Subnet1. In Subnet2 they have placed two DHCP clients. A router separates Subnet1 and Subnet2 (with DHCP/BOOTP relay enabled). As this network is experiencing heavy traffic, they have asked you what measures could they use to reduce the traffic. What do you advice? (Choose all that apply)

A. You need to place a DHCP Relay agent on Subnet1 and disable DHCP/BOOTP forwarding on the router connecting Subnet1 and Subnet2.

B. You need to place a DHCP Relay agent on Subnet2 and disable DHCP/BOOTP forwarding on the router connecting Subnet1 and Subnet2.

C. Place a second DHCP server on Subnet1 and disable DHCP/BOOTP forwarding on the routers connecting Subnet1 and Subnet2.

D. Place a second DHCP server on Subnet2 and disable DHCP/BOOTP forwarding on the routers connecting Subnet1 and Subnet2.

E. None of the above.

Good Luck .... see you tomorrow for the answer!!

__________________
One Exam leads to another! Where will it ever end?

Report this post to a moderator

I'll go with B.& D.
With either of these choices you are enabling the dhcp clients on subnet2 to receive IP configurations and reduce network traffic, especially broadcast traffic.

Report this post to a moderator

If you do D then each subnet will have a server giving out addresses. The scopes will be different so there will be no cross-talk.

B will work as well, but as it is only a relay agent, you will still have cross-talking.

__________________
If it's not written down, then it never happened!

Report this post to a moderator

'B & D'

Report this post to a moderator

if i understand dhcp correctly, doesn't a bootp-enabled router only allow bootp broadcast messages and discard 'general' broadcasts? if so, how much traffic could 2 clients actually cause when they only make bootp requests every 4 days (default lease time of 8 days) or once everytime the system reboots? seems to me that disabling the bootp function of the router or setting up another dhcp server or using a dhcp relay agent would not minimize traffic at all. in that case, i would have to go with answer "E".

Report this post to a moderator

em' I like your answer!

Report this post to a moderator

How about B & D?

Because all hosts must process broadcast traffic, disabling DHCP/BOOTP forwarding on the router connecting Subnet1 and Subnet2 would prevent broadcast traffic from traversing subnets and help to reduce network traffic.

Installing a DHCP relay agent ordinarily is not necessary because the router is rfc 1542 (DHCP/BOOTP) compatible, but because of high network traffic the network must be experiencing network bandwidth problems. In this case, installing a DHCP relay agent and disabling DHCP/BOOTP forwarding on the router connecting the two subnets would prevent broadcast traffic from traversing subnets and reduce network traffic. The DHCP relay agent would listen for the client's broadcast messages on subnet 2 and forward those messages as received to the DHCP server located on Subnet 1.

By placing a DHCP server on subnet 2, configuring a scope just for that subnet, and disabling DHCP/BOOTP forwarding on the router connecting Subnet1 and Subnet2, the clients on subnet 2 would use the local DHCP server and broadcast traffic would be prevented from traversing subnets reducing network traffic.

__________________
Due to financial problems, the light at the end of the tunnel will be shut down until further notice.

Last edited by Zaraspook on 04-04-02 at 02:34 AM

Report this post to a moderator

I think the best answer would be:

D. Place a second DHCP server on Subnet2 and disable DHCP/BOOTP forwarding on the routers connecting Subnet1 and Subnet2


And probably:
-Although I'm not sure why by doing it would reduce traffic ?

B. You need to place a DHCP Relay agent on Subnet2 and disable DHCP/BOOTP forwarding on the router connecting Subnet1 and Subnet2 would work

__________________
" When asked if he felt discouraged by the 1,073 failures he had before inventing the electric light bulb, "I did not fail 1,073 times; I found 1,073 ways not to do it."

Thomas Edison.

Report this post to a moderator

B & D
The relay agent talks directly to DHCP server, eliminating broadcasts from subnet 2 to subnet 1.
I also question the need with only 2 clients, but I do know that broadcasts need to be avoided if possible on a busy network.

__________________
...by the way, that's me in the bottom left corner of the pic...

Report this post to a moderator

B & D

__________________
Oh Lordy Watch Out its the Fatslags

Report this post to a moderator