● Which of the following desdription is WRONG .about Wi-Fi? __(71)__.

(  )

（71）A．Any standard Wi~Fi device. will work anywhere in the world with global operative set of standaeds

B．Now most laptops are built with wireless network adapters inside

C．One can connect Wi-Fi devices in ad-hoc mode for client-to-client connections without a router

D．Communications between two devices need the involvement of an access point with Wi-Fi

● Both TCP and UDP belong to __(72)__ layer of the OSI mode。

（  ）

（72）A．session  B．transport  C．network D．data link

● __(73)__ is the budgeted amount for the work actually completed on the schedule acticity or WBS comonent during a given period。

（  ）

（73）A．Planned value

B．Actual cost

C．Earned value

D．Cost variance

● What does a CPI of 80% mean?  __(74)__ . 

(   ) 

（74）A．As of now we expect the total pr gject cost of 80% more  than planned

B．When the project is completed, we will have spent 80% more

C．Your project is only progressing at 80% of that planned 

D．Your project is only getting 80 cents out of every RMB invested

●   __(75)__ is the application of planned, systematic quality activities to ensure that the project will employ all processes to meet requirements.

(  )

（75）A．Quality assurance

B．Quality planning

C．Quality control

D．Quality cost