I gave test in IST for JA-1. So on the basis of it I am sharing the test pattern.
In english portion, comprehension passage and questions to be given at end, one portion was like two sentences were given and questions were asked about them like "What is implied in first or second sentence" ans simple mathematical portion. Then test was taken on computer to check skills related to MS office.i.e. make a slide, insert hyperlink, draw table etc.