Quiz submission record for quiz4-1-2 at Tue Jul 13 10:52:21 2004: Your Answer for Question 1: no, because teh D input is sampled on the clock edge, it must be valid for a period of time immediately before and immediately after the clock edge. This is depending on the clock edge on Q for the next D input. Your Answer for Question 2: 1). train stations and railroad. 2). Cities and highway system. 3). computer and internet. Your unique submission ID is quiz4-1-2-cs61c-cq-1089741141-2809.