Using a wireless technology known as ________, many smartphones can now be tapped on special payment devices to complete your purchase at select stores.

A. Bluetooth
B. SMS
C. NFC
D. Wi-Fi


Answer: C

Computer Science & Information Technology

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____ are designed to prevent loops in a bridged (switched) LAN.

A. Spinning trees B. Branching trees C. Spanning trees D. Binary trees

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Find the solution of the system algebraically.

A.
B.
C.
D.
E. no solution

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Ease of Access

A. Only Windows XP B. Windows XP, Vista, and 7 C. Windows Vista and 7 D. Only Windows 7

Computer Science & Information Technology