单项选择题

10BaseT is an Ethernet LAN term meaning a maximum transfer rate of 10Mbps 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
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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
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
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