|
Home > Archive > CCNA > April 2003 > Two Questions
You are viewing an archived Text-only version of the thread.
To view this thread in it's original format and/or if you want to reply to
this thread please [click here]
|
|
| tbird8450 2003-04-29, 1:27 pm |
| Simple one first...
I've read in a few spots that IPX is no longer a part of the CCNA. True or false?
Second question...
In doing some practice exams online I came across the following puzzler:
Given the configuration example:
interface ethernet0
ipx network 4a
ipx access-group 800 out
interface ethernet1
ipx network 3d
interface ethernet2
ipx network 5c
access-list 800 permit 3d 4a
Which two actions result from implementing this configuration? (Choose two.)
A. IPX network 5c will not receive any traffic.
B. Traffic from network 3d for network 4a will be forwarded out e0.
C. Traffic from network 3d for network 3d will be forwarded out e0.
D. Traffic from network 3d, destined for network 4a, will be forwarded out e2.
E. The access list is applied to an outgoing interface and filters outbound traffic.
Answer: D, E
Ok, answer E I am fine with. However, answer D is giving me a hard time. Why wouldn't traffic from 3d be forwarded out of e0? I'm obviously missing something and would love it if anyone could fill in the blank(s).
Thanks! | |
| anchor40 2003-04-29, 2:39 pm |
| 1) No more IPX in the CCNA 3.0...
From Cisco's main site, go down the Learning and Events, choose Certification resources, Certification Exams, then click on the CCNA 640-607 (if the link below doesn't work properly):
http://www.cisco.com/warp/public/10/wwtraining/certprog/testing/current_exams/640-607.html
2) Me thinks there is a typo. It should be A and E. ACL 800 permits only IPX packets from network 3d to network 4a from leaving Eth0.
E0 is local to network 4a and would advertise the path to 4a, not Eth2, which advertises to 5c.
Anyone else agree that there was a typo? | |
| tbird8450 2003-04-29, 2:48 pm |
| Why would the answer be A as well?
There's nothing stopping traffic from 3d from going through e1 and straight over to e2 and out to 5c, is there? The ACL on e0 shouldn't affect anything there, correct?
But I do agree that there is a typo somewhere.  | |
| anchor40 2003-04-29, 5:21 pm |
| The ACL only permits traffic from 3d to 4a, right?
Then the ACL is only applied to traffic leaving Eth0, right?
So, the only traffic allowed to leave Eth0 is from 3d to 4a.
Look at each answer:
A. IPX network 5c will not receive any traffic.
Not true, this interface is unrestricted
B. Traffic from network 3d for network 4a will be forwarded out e0.
True, see reason above
C. Traffic from network 3d for network 3d will be forwarded out e0.
Not true. First, traffic to 3d will leave via Eth1, its "connected" interface, and second, the ACL would deny it if it could.
D. Traffic from network 3d, destined for network 4a, will be forwarded out e2.
Not true. Eth0 is the "connected" interface for 4a, so traffic would exit via that interface, not Eth2, the 5c network.
E. The access list is applied to an outgoing interface and filters outbound traffic.
True. The out at the end of the access-group statement applies the filter in the outbound direction ONLY.
HTH... | |
| tbird8450 2003-04-29, 5:28 pm |
| B and E was my original answer...I'm happy to see that it was a mistake on their end and not mine!
Thanks so much for the assistance...
Exam is tommorrow. *gulp* |
|
|
|
|