Does this help?
Hi, if the tests are reletive to the job description such as the 'customer service agent' im 95% certain it will be on basics such as:
Geography, Airport Codes, Global Indicators, Regulatory Authorities, Types of Airlines, Terminology, Security,Ticket Types, Ticket Reading, Customer Service, Passports & Visa's etc etc,
Make sure you atleast know the above and learn it well, and you shall pass!
Just be prepared!