This is ok for free - but it should be programmed to support all Cisco command variations.
When you use the abbreviations that are supported and used on the CCNA exams it tells you it is wrong - it only recognizes the full Cisco command.
In the real world - networkers DO NOT type out the whole command if they do not have to.
conf t
is the came as
configure terminal
in e0/0
is the same as
interface ethernet 0/0
sh in e0/0
is same as
show interface ethernet 0/0
cop ru st or
copy run st
is the same as
copy running-config startup-config
When Cisco first started the Cisco Network Academy for CCNA about 7 years ago they had a sim like this, I had an experienced networking guy from the USAF who kept getting hung up - he could completely configure a real Cisco router in 4 minutes but the sim had him second guessing himself because it wanted everything spelled completely out. Cisco changed it in the Academy because so many people complained that it was not like a real router.
It is great to know the full command but you can use and will see command variations on Cisco exams, at least I have on CCNA, CCDA and a CCNP exam.
My thoughts - get time on a real stack of your own routers or the free stack offered in this forum and practice it until you get the Ethernet interface up and running by confirming it with different show commands. This would then be kind of like what you would be doing in the real world !!
Just my thoughts!
E.A. Broda
CCNA, CCDA, CCAI, Network +