In a TOGAF interview, you will likely encounter questions about EA, SOA, and other architecture-building techniques. While SOA is a service-based technique in enterprise building, you can expect questions about SOA to test your technical knowledge and EA skills. SOA aims to produce reusable solutions to recurring design problems via SOA patterns. A variety of SOA patterns are commonly used, like File gateway, service callback, service grid, and so on. While answering this question, you can state at least two to three patterns and elaborate on them. For instance, you can say, "Some of the most common SOA patterns include File gateway, which acts as a mediator to perform data transformations between a service and a legacy flat file. The next commonly used tool is the Enterprise service bus which aims to facilitate communication via messaging and data transformations. Another typical SOA pattern is service callback. This pattern allows consumers to leave a callback address to which the enterprise service will be able to send responses".