(七) In which of the following addition problems (using two's complement notation) does an overflow error occur(發生溢位問題)? (A) (B)(C)(D)

(四) A microkernel is a kernel________ . (A) containing many components that are optimized to reduce resident memory size (B) that is compressed before loading in order to reduce its resident memory size (C) that is compiled to produce the smallest size possible when stored to disk (D) that is stripped of all nonessential components