Chapters 10, 11, 12 Flashcards
(55 cards)
Technology that can travel with the user is called?
Mobile
The traditional working environment that required users to come to a wired computer is?
Ineffective and inefficient
Telecommunications in which electromagnetic waves carry the signal between communicating devices.
Wireless
Such wireless devices include
Computers, smartphones and iPads
The term wireless means exactly what is says: without wires. In contrast, mobile refers to?
Something that changes its location over time.
Mobile-computing refers to
A real-time, wireless connection between a mobile device and other computing environments, such as the Internet or an intranet.
Mobile Commerce (M-Commerce)
Refers to e-commerce (EC) transactions conducted with a mobile device.
Pervasive computing
Also called ubiquitous computing, means that virtually every object has processing power with either wireless or wired connections to a global network.
True or False: When discussing communication media, wireless and mobile mean the same thing because if the device is wireless, is has to be mobile, and if it is mobile, is has to be wireless.
False. They are separate and it is important to think of them individually and not as an item.
True or False: Wireless technologies enable individuals and organizations to conduct mobile computing, mobile commerce and pervasive computing.
True
Mobile computing ___________________________.
refers to a real-time, wireless connection between a mobile device and other computing environments, such as an intranet.
Wireless technologies include both?
Wireless devices (smartphones) and wireless transmission media (microwave, satellite, radio). These technologies are fundamentally changing the ways organizations operate.
What three major advantages do wireless devices provide to users?
1) They are small enough to easily carry or wear
2) They have sufficient computing power to perform productive tasks
3) They can communicate wirelessly with the Internet and other devices
Modern smartphones exhibit a process called
Dematerialization
Dematerialization occurs when
the functions of many physical devices are included in one other physical device.
One downside of smartphones is?
People can use them to copy and pass on confidential information
The major types of wireless media are?
Microwave
Satellite
Radio
Infrared
Microwave (wireless media) channels have high bandwidth’s and are relatively inexpensive but they?
Must have unobstructed line of sight and can be susceptible to environmental interference.
Although satellite wireless media can be: expensive must have unobstructed line of sight, signals may experience propagation delay and they must have encryption for security. The advantages are
its high bandwidth and large coverage area.
Radio signals create electrical interference problems and are susceptible to snooping unless encrypted but they also have several advantages, they are
its high bandwidth, signals pass through walls and its inexpensive and easy to install
Infrared wireless media’s advantage is its low to medium bandwidth and its disadvantages are?
That it must have unobstructed line of sight and it can only be used for short distances.
A microwave system that uses microwaves for high-volume, long-distance, point-to-point communication.
Microwave transmission
Systems transmit data via electromagnetic waves.
Microwave transmission
Microwave towers usually cannot be spaced more than?
30 miles apart
