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單項(xiàng)選擇題

A technician has a PC that has no Internet connection. The IP address for the PC is 169.254.XXX.XXX. Which of the following should be checked FIRST?（）

A. DHCP settings
B. BIOS settings
C. DNS settings
D. Power settings

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單項(xiàng)選擇題

A technician installs a new sound card but no sound can be heard. Which of the following utilities can be used to see an error?（）

A. MSCONFIG
B. Device Manager
C. DXDIAG
D. REGEDIT

單項(xiàng)選擇題

Which of the following 802.11 standards can operate at both 2.4 GHz and 5.0 GHz?（）

A.A
B.B
C.G
D.N