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K204 Definitions: Chapter 7
Chapter 7 notes
39
Business
Undergraduate 1
02/02/2012

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Term
Telecommunications System
Definition
Enable the transmission of data over public or private networks
Term
Network
Definition
A communications, data exchange, and resource–sharing system created by linking 2 or more computers and establishing standards
Term
2 principal benefits networks provide
Definition
the ability to communicate in the ability to share
Term
Local Area Network (LAN)
Definition
Designed to connect a group of computers in close proximity to each other such as in an office building, a school, or a home
Term
Wide Area Network (WAN)
Definition
Spans a large geographic area, such as a state, province, or country
Term
Metropolitan Area Network (MAN)
Definition
A large computer network usually spanning a city
Term
Competitive advantages of gaining an understanding of networking and telecommunication fundamentals
Definition
Voice over IP, networking businesses, increasing the speed of business, and securing business networks
Term
Voice Over IP
Definition
Uses TCP/IP technology to transmit voice calls over long–distance telephone lines (10% of all phone calls)
Term
What benefits does using existing network and internet infrastructure using VoIP bring?
Definition
route calls more efficiently and inexpensively, VoIP offers businesses significant cost savings, activity gains, and service enhancements.
Term
What has been one of the most popular VoIP services in the world
Definition
Skype
Term
Virtual Private Network (VPN)
Definition
A way to use the public telecommunication infrastructure (e.g. the Internet) to provide secure access to an organization's network
Term
Value-Added Network (VAN)
Definition
A private network, provided by a third-party, for exchanging information through a high-capacity connection
Term
Bandwidth
Definition
The difference between the highest and the lowest frequency that can be transmitted on a single medium, and it is a measure of the medium's capacity
Term
Hertz
Definition
Cycles per second
Term
Baud
Definition
The number of signals sent per second
Term
What does bandwidth determine
Definition
what types of communication–voice, data, graphics, full-motion video–can reasonably be transmitted over a particular medium
Term
Broadband
Definition
Generally refers to high-speed Internet connections transmitting data speeds greater than 200 kB per second (dial-up has a maximum speed of 56 kB per second)
Term
What does a good password have?
Definition
both letters and numbers along with a few punctuation marks for added security
Term
What types of networks permit users on the network to get data from other points on the network?
Definition
LAN or WAN
Term
To what does Mobile refer?
Definition
Means the technology can travel with the user, but it is not necessarily in real–time; users can download software, e-mail messages, and webpages onto their PDAs, laptops, or other mobile devices for portable reading or reference
Term
To what does Wireless refer?
Definition
Refers to any type of electrical or electronic operation that is accomplished without the use of a hardwired connection
Term
Generations of Cellular Systems
Definition
Older cellular systems are analog (IG) and newer cellular systems are digital (PCS)
• Third-generation (3G) networks use a newer packet-switched technology that is much more efficient then dedicated circuit switched networks (speeds ranging from 1220 to 144 kilobits per second
Term
Personal Digital Assistants
Definition
• PDAs are small handheld computers cable entirely of digital communications transmission
Term
What functions does a PDA have?
Definition
display, compose, send, and receive e-mail messages, and some models can provide wireless access to the Internet (they are stand-alone mini-computers)
Term
Smartphone
Definition
Combines the functions of a cell phone and a PDA in a single device
Term
What was the first brand of successful PDAs?
Definition
Palm Pilot
Term
Bluetooth
Definition
A telecommunications industry specification that describes how mobile phones, computers, and personal digital assistants can be easily interconnected using a short-range wireless connection
Term
Satellite
Definition
A big microwave repeater in the sky; it contains one or more transponders that listen to a particular portion of the electromagnetic spectrum, amplifying incoming signals, and retransmitting them back to earth
Term
Microwave Transmitter
Definition
Uses the atmosphere as the transmission medium to send the signal to a microwave receiver
Term
Microwave Transmitter
Definition
Uses the atmosphere as the transmission medium to send the signal to a microwave receiver
Term
Newer satellite medium
Definition
travel closer to the earth and are able to pick up signals from weak transmitters–they also consume less power in cost less to launch
Term
Location-Based Services
Definition
Wireless and mobile content services that provide location–specific information to mobile users moving from location to location
Term
Global Positioning System
Definition
A constellation of 24 well spaced satellites that orbit the earth and make it possible for people with ground receivers to pinpoint their geographic location
Term
Who owns and operates GPS?
Definition
US Department of Defense
Term
Geographic Information System
Definition
Designed to work with information they can be shown on a map
Term
Wireless Fidelity
Definition
Wi-Fi
A means of linking computers using infrared or radio signals
Term
WiMAX
Definition
Worldwide interoperability for microwave access, in telecommunications technology and providing wireless data over long distances in a variety of ways, from point to point links to full mobile cellular type access
Term
2 parts of a WiMAX system
Definition
WiMAX tower, in a WiMAX receiver
Term
Radio Frequency Identification
Definition
Technologies use active or passive tags in the form of chips or smart labels that can store unique identifiers in relay this information to electronic readers
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