单选

某单位的百兆以太网信号类型为基带,电缆类型为非屏蔽超五类双绞线,电缆连接器类型为RJ-45。该单位需将其升级为千兆以太网,则升级为()网络的成本最低。

  • A.1000BaseTCX
  • B.1000BaseT
  • C.1000BaseSX
  • D.1000BaseLX
参考答案
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The most crucial time for project risk assessment is ( ).

  • A.when a problem surfaces
  • B.during the planning phase
  • C.during the close-out phase
  • D.after the project schedule has been published

The communication management plan determines the information and communications needs of the takeholders. In the following statements related to communication management plan. ( ) is false.

  • A.The communication management plan is contained in or is a subsidiary plan of, the project management plan.
  • B.The communication management plan can be formal or informal, highly detailed or broadly framed, and based on the needs of the project.
  • C.The communication manamgement plan organize and summarize the information gathered,and present the results of any analysis as comparedthe performance measurement baseline.
  • D.The communication management plan can include guidelines project status meetings,project team meetings,e-meetines,and e-mail
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