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Chapter 8 Flashcards

1
Q

Wireless

A

Communication using electromagnetic waves to transmit signals between devices

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2
Q

Mobile

A

Something that moves or changes its location over time

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3
Q

Mobile Computing

A

A wireless, real-time connection between a mobile device and other computing systems, like the internet or an intranet

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4
Q

Mobile Commerce (M-Commerce)

A

E-commerce transactions done using a mobile device

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5
Q

Wireless Device Advantages

A

Portable
Enough Computing Power
Wireless Connection

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6
Q

Dematerialization

A

When multiple physical devices’ functions are combined into one device

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7
Q

Downside of Smartphones

A

Confidential Info Leak
Scam Calls

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8
Q

Types of Wireless Transmission Media

A

Microwave
Satellite
Radio

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9
Q

Microwave Transmission

A

A wireless system for high-volume, long-distance communication between two points

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10
Q

Disadvantages of Microwave Transmission

A

Unobstructed Line of Sight
Environmental Interference

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11
Q

Satellite Transmission

A

A wireless system that uses satellites to transmit broadcast communications

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12
Q

Satellite Transmission Disadvantage

A

Expensive
Unobstructive Line of Sight
Signal Delay
Need Security Encryption

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13
Q

Types of Telecommunications Satellites

A

GEO
MEO
LEO

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14
Q

Propagation Delay:

A

The delay in communication caused by the time it takes for a signal to travel through a medium

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15
Q

Global Positioning System (GPS)

A

A wireless system that uses satellites to help users determine their location anywhere on Earth

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16
Q

Internet over Satellite (IoS)

A

In areas where installing cables is too costly or impossible, IoS allows users to access the internet via GEO satellites using a dish mounted on their homes

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17
Q

Commercial Imaging

A

This involves using small satellites, called nanosatellites, to capture images from orbit

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18
Q

Radio Transmission

A

Uses radio waves to send data directly between transmitters and receivers

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19
Q

Radio Transmission Advantages

A

Passes Through Walls
Cheap and Simple
High Speeds

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20
Q

Radio Transmission Disadvantages

A

Electrical Interference
Eavesdropping
Too Far=Static
50-65 km

21
Q

Satellite Radio (Digital Radio)

A

A wireless system that provides uninterrupted, near CD-quality sound broadcasted from satellites to your radio.

22
Q

Wireless Networks Threats

A

Rogue Access Points
War Driving
Eavesdropping
Radio Frequency Jamming

23
Q

Rogue Access Point

A

Unauthorized access points set up either accidentally or by attackers to steal information

24
Q

War Driving

A

Searching for wireless networks while moving around. Unauthorized users can find and access networks to get free internet or steal data

25
Q

Bluetooth

A

Technology that allows short-range connections (for data and voice) between wireless devices

26
Q

Personal Area Network (PAN)

A

A network used for communication between devices close to one person.

27
Q

Bluetooth Benefits

A

Low Power
Emits in All Directions
Location Service

28
Q

Ultra-Wideband (UWB)

A

A high-speed wireless technology with transmission speeds over 100 Mbps, used for applications like streaming multimedia from a personal computer to a television

29
Q

Near-Field Communication (NFC):

A

A short-range wireless network with a very small range, designed to be used in mobile devices like cellphones and credit cards

30
Q

Wireless Local Area Network (WLAN)

A

A computer network in a small area that uses wireless transmission to communicate

31
Q

Wireless Fidelity (Wi-Fi)

A

A set of standards for wireless local area networks, based on the IEEE 802.11 standard.

32
Q

Wireless Access Point

A

An antenna that connects a mobile device to a wired local area network

33
Q

Hotspot

A

A small area where a wireless access point provides service to multiple users

34
Q

Cellular Telephones (Cellphones)

A

Phones that provide two-way radio communication over a cellular network, allowing for seamless hand-off between base stations

35
Q

Fifth-Generation (5G) Cellular Networks

A

Fifth-generation cellular network technology, offering faster speeds, lower latency, and enhanced performance compared to previous generations

36
Q

Types of 5G

A

Low-Band
Mid-Band
High-Band

37
Q

5G Uses

A

Enhance Agricultural Productivity
Improved Remote Education
Advanced Healthcare
Improved Manufacturing

38
Q

WiMAX (Worldwide Interoperability for Microwave Access)

A

Wireless broadband technology defined by IEEE Standard 802.16

39
Q

WiMAX Features

A

Long-Range
High Data Transfer Rates
Security
Used in Emergency Situations

40
Q

Mobile wallet (m-wallet)

A

Lets users make purchases easily with just one click on their mobile device

41
Q

Location-based commerce (L-commerce)

A

When businesses send offers or services to people based on where they are and what time it is

42
Q

Mobile Computing Characteristics

A

Mobility
Broad Reach

43
Q

Telemetry

A

Wireless transmission and reception of data collected from remote sensors

44
Q

The Internet of Things (IoT)

A

A system where everyday objects, animals, and people are equipped with unique identifiers (like sensors or RFID tags) and can automatically send data over a network

45
Q

The Internet of Things (IoT) Issues

A

Security
Privacy

46
Q

The Internet of Things (IoT) Org Benefits

A

Hospitality
Farming

47
Q

Wireless Sensor

A

A device that tracks things like temperature, sound, or movement and sends the info wirelessly

48
Q

Radio-Frequency Identification (RFID) Technology

A

A wireless tech that uses tags with antennas and chips to track the movement of goods using radio signals

49
Q

RFID Used in Businesses

A

Inventory Management
Supply Chain Tracking
Access Control

dgffgdfdg (13 decks)

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