How do you pronounce it? And where are you from? It would be good to know how old you are too, but if you want to be coy about that, OK.
There are three possibilities that I can think of: (1) Dayta (with the vowel of day), (2) datta (with the vowel of hat) and (3) dahta, with the vowel of father.
Question (B): Same question with strata.
Note: if you want to talk about whether data is singualr or plural, start your own thread. It's all pronunciation here.
