Answer / Chandra Prakash Yadav

In Cognos, there are two types of gateways:
1. Web Application Architecture (WAA) Gateway: This gateway enables Cognos to access data from multiple sources through ODBC or JDBC drivers. It also manages the communication between Cognos and other applications like IBM DB2 or Microsoft SQL Server.
2. Data Integration (DI) Gateway: This gateway is used when integrating data with other systems, such as ERP or CRM solutions. It supports various ETL processes and can handle large amounts of data.

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