Impetus Technologies Interview Question

i) tell about JVM components ii) tell about predicate and consumer in java8 iii) tell about java program execution internal iv)about kafka architecture v) about spark architecture vi) which is better rdd,dataset or dataframe. vii)Big query related question about secuirty and optimisations viii)difference between hadoop and spark ix)tell diff about groupby and groupbykey x)tell about kafka offset working xi)about transformation and action xii)about streaming jobs xiii) about dataflow jobs and terraform