MIS 301 chapter 8

Wide-Area Wireless Networks

1-5G

The rule of thumb in the wireless industry is that a smartphone uses 4 gigabytes of data per month where ____ percent travels through Wi-Fi.

75

Ultra-Wideband

A radio technology uses a very low energy level for shortrange, high-bandwidth communications over a large portion of the radio spectrum, Speed in excess of 100 Mbps, Good choice for streaming multimedia

Mobile Computing

A real-time connection between a mobile device and other computing environments, such as the Internet

MiFi

A small, portable wireless device users with a permanent Wi-Fi hotspot. MiFi provides internet connectivity at any location that offers. 3G/4G cellular network with the range roughly 30 feet

The advantage of ________________ is they can be read over greater distances.

Active RFID tags

Which of the following is NOT a value-adding attribute of mobile computing?

Bandwidth improvement

____________ refers to the fact that when users carry an open mobile device, they can be reached instantly, even across great distances.

Broad reach

Cellular Radio(Wide-Area Network)

Cellular telephones (cell phones) provide two-way radio communications over a cellular network base stations with seamless handoffs. In cities, each cell site may have range of up to 0.5 miles, while in rural areas, the range could be 5 miles

1G

Cellular used analog signals and had low capacity

Modern smartphones exhibit a process called __________, which means the functions of many physical devices are included in one other physical device.

Dematerialization

Wi-Fi Direct

Enables peer-to-peer communications with the speeds of up to 250 Mbps and at distances of up to 800 feet

______________ satellites are the most expensive to build and launch.

GEO

Wi-Fi is a ______________.

LAN

______________ satellites require medium-powered transmitters.

MEO

Hotspots are an example of ______________ wireless networks.

Medium-range

Which of the following is a medium-range wireless network?

MiFi

______________________ refers to the real-time connection between a mobile device and other computing environments.

Mobile computing

____________ means that users carry a device with them and can initiate a real-time contact with other systems from wherever they happen to be.

Mobility

Major characteristics of mobile computing

Mobility: carry a device initiating a real-time contact with other systems. Broad Reach: users can be reached instantly even across great distances

Which of the following is the technology that enables most mobile wallet applications?

NFC

________________ store information horizontally and vertically.

QR codes

Bluetooth

Refers to an industry specification for personal area network, Short-wavelength UHF radio waves in the ISM band from 2.4 to 2.485 GHz, Wireless headsets, portable music players, and wireless mouse

NFC is an example of ______________ wireless networks.

Short-range

An advantage of a radio transmission system is ____________.

Signals pass through walls

Wireless Devices advantages for users

Small enough to easily carry or wear. Sufficient computing power to perform productive tasks. Communicate wirelessly with the Internet & other devices

A disadvantage of a microwave transmission system is ____________.

Susceptible to environmental interference

The key fob you use to open your car before you get to it is an example of _______.

Telemetry

______________________ is the wireless transmission and receipt of data gathered from remote sensors.

Telemetry

Near-Field Communications

The smallest range (several inches) of any short-range wireless networks. It is designed to be embedded in mobile devices such as cell phones and credit cards

Which of the following is NOT a major advantage of wireless devices to users?

They can be used to copy and pass on confidential information

Which of the following is a short-range wireless network?

UWB

_____________ means a mobile device can provide information and communication regardless of the user's location.

Ubiquity

3G

Uses digital signals and can transmit voice and data. CDMA and GSM represent 3G technology. In fixed location, 2 Mbps. In a moving car, 128 Kbps

2G

Uses digital signals primarily for voice communication; it provides data communication up to 10 Kbps

War driving is the act of locating __________________ while driving around a city.

WLAN's

_____________ is the act of locating WLANs while driving around a city.

War driving

____________ enables peer-to-peer communications and allows users to transfer content among devices without having to rely on a wireless antenna.

Wi-Fi Direct

Medium-Range Wireless Networks

Wi-Fi, Wi-Fi Direct, MiFi

Wi-Fi

Wireless fidelity, wireless local area networks (WLANs) A transmitter with an antenna, called a wireless access point (hotspot), connects to a wired LAN or to satellite dishes that provide an Internet connection. The major benefit of Wi-Fi is its low cost and its ability to provide simple Internet access. The signal range is up to 300 feet.

One Major Disadvantage of wireless devices for Business

Workers can capture and transmit sensitive proprietary information

Dematerialization

a phenomenon that occurs when the functions of many physical devices are included in one other physical device

5G

by 2020, much faster and more intelligent (the Internet of Things)

4G

is not one defined technology or standard - 100 Mbps for high-mobility communications such as cars - 1 Gbps for low-mobility communications such as pedestrians - LTE (Long-term evolution) 10 times faster than 3G

Mobile Commerce

refers to electronic commerce transactions that are conducted in a wireless environment