Used a free voucher to pass 489
test today...
Best thing would be to go through the tutorial given at
http://www-3.ibm.com/software/webservers/appserv/doc/v40/ae/infocenter/was/0607.html then read WAS 4.0 handbook beside playing with it for a while.
There were 56 questions total and you have to get 59% correct to pass.
7 sections covered: % of test covered
1) Architecture 9%
2) Installation and Configuraion 16%
3) Application Assembly and Deployment 11%
4) Security 21%
5) Maintenance and Performance Tuning 14%
6) Problem Determination and Troubleshooting 20%
7) Workload Management and Scalability 9%
Note the big chunks of percentage taken by 4 and 6.
Good Luck
IBM Certified Specialist AIX Administration
IBM System Expert - Admin for WAS, AE 4.0