单项选择题

Sub-contractors should obey the contractor in information system project.When censoring sub-contractors,the supervisor mostly concerns about （）.

A.Amount of subcontract
B.qualifications and abilities of sub-contractors
C.responsibilities and obligations of sub-contractors
D.the contents of the subcontract

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单项选择题

A work breakdown structure （WBS）is a tool used to define and group a project's discrete work elements in a way that helps organize and define the total work scope of the project.A WBS is most useful for （）.

A.identifying individual tasks for a project
B.scheduling the start of tasks
C.scheduling the end of tasks
D.determining potential delays

单项选择题

10BaseT is an Ethernet LAN term meaning a maximum transfer rate of 10 Mbps that uses baseband signaling and twisted pair cabling.A 10BaseT Ethernet LAN has a （） topology.

A.star
B.ring
C.bus
D.none of the above