What are alerts? Where & how u has to do alerts?

Can anybody tell me what is trex and how it is related with xi?

What is business system?

Partner connectivity kit is directly integrated with?

What information is defined in the software catalog?

Different between http and soap?

What are the various url address of xi components?

What is global container in sap xi?

What is the use of end-to-monitoring?

what are the roles of an xi architect?

Which adapter has central monitoring and configuration?

What are the sap xi components?

What is the use of performance monitoring?

The information from the systems catalog is used which component of the integration builder?

What is the main difference between the monitoring done using sxmb_moni and the one done using runtime workbench in xi?