An example of scope verification is（）
A.review the performance of an installed software module B.managing changes to the project schedule C.decomposing the WBS to a work package level D.performing a benefit/cost analysis to determine if we should proceed with the project
单项选择题The TCP protocol is a（）layer protocol.
A.physical B.network C.transport D.application
单项选择题The connection between two networks to form an internet is handled by a machine known as a（）
A.bridge B.server C.router D.switch
