I also failed for my 640-801 exam.
I had a score of 753, and that is not enough.
I was really shocked when I had my first question.
It was a pratical lab about OSPF, OSPF was not working and I should make it work.
It took me 30 minutes to solve this question.
I was supprised because I was confinced that only RIP and IGRP where the routing protocols that where deeper questioned about.
But that is not true, so take my advise and study everything about routing protocols up to every cli command.
I am going to take the exam agian in three weeks, so there is time to study and make some more labs.
Tips:
- know your subnetting and calculations for broadcast and network addresses and numbers of hosts this will win time.
- know your access-lists
- Know the definitions about NAT
- Know the switches and the VLAN's
- OSI ( you must dream it)
Who knows where I can find good labs for the Cisco academy router simulator?
