Which among the following is considered a line-of-sight communication medium?
A. Broadcast radio
B. Satellite
C. Bluetooth
D. Microwave
查看答案
WiMax stands for _______.
A. Wide-area Access for Maximum Reach
B. Wide-area Range to Maximize Access
C. Worldwide Interoperability for Microwave Access
D. Worldwide Access to Maximize Interoperability
Microwave communication uses high-frequency _______.
A. radio waves
B. infrared
C. satellite communications
D. optic fibers
_______ is a term relating to sending data to a satellite.
A. Uplink
B. Upload
C. Download
Downlink
The GPS device in an automobile uses which communication channel?
A. Infrared
B. Radio Frequency (RF)
C. Microwave
D. Satellite
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