CH 8

One of the most dramatic changes in connectivity and communications in the past few years has been ________

• widespread use of mobile devices with wireless Internet connectivity
• running programs on remote computers
• chat rooms
• satellite uplinks

In a communication system, which among the following originate and accept messages in the form of data, information, and/or instructions?

• communication channel
• connection devices
• sending and receiving devices
• data transmission specifications

In a communication system, which among the following convert messages into packets that can travel across the communication channel?

• sending and receiving devices
• storage devices
• secondary devices
• connection devices

Which physical connection is the fastest?

• microwave
• fiber-optic cable
• twisted pair
• coaxial cable

Which among the following is considered a line-of-sight communication medium?

• Bluetooth
• broadcast radio
• microwave
• satellite

WiMax stands for ________

• wide-area access for maximum reach
• worldwide access to maximize interoperability
• wide-area range to maximize access
• worldwide interoperability for microwave access

Microwave communication uses high-frequency ________

• satellite communications
• radio waves
• optic fibers
• infrared

________ is a term relating to sending data to a satellite

• Upload
• Downlink
• Download
• Uplink

The GPS device in an automobile uses which communication channel?

• satellite
• radio frequency (RF)
• infrared
• microwave

A service that uses existing phone lines to provide high-speed connections is called ________

• WWAN
• voiceband
• 3G/4G
• DSL