Flashcards in Chapter 7: Telecommunications, the Internet, and Wireless Technology Deck (65)
Cellular networks based on packet-switched technology with speeds ranging from 144 Kbps for mobile users to over 2 Mbps for stationary users, enabling users to transmit video, graphics, and other rich media, in addition to voice.
The next evolution in wireless communication is entirely packet switched and capable of providing between 1 Mbps and 1 Gbps speeds; up to ten times faster than 3G networks. Not widely deployed in 2010.
The capacity of a communications channel as measured by the difference between the highest and lowest frequencies that can be transmitted by that channel.
Popular term for Weblog, designating an informal yet structured Web site where individuals can publish stories, opinions, and links to other Web sites of interest.
Totality of blog-related Web sites.
Standard for wireless personal area networks that can transmit up to 722 Kbps within a 10-meter area.
High-speed transmission technology. Also designated a single communications medium that can transmit multiple channels of data simultaneously.
Cable Internet Connections
Internet connections that use digital cable lines to deliver high-speed Internet access to homes and businesses.
Live, interactive conversations over a public network.
Digital Subscriber Line (DSL)
A group of technologies providing high-capacity transmission over existing copper telephone lines.
English-like name that corresponds to the unique 32-bit numeric Internet Protocol (IP) address for each computer connected to the Internet.
Domain Name System (DNS)
A hierarchical system of servers maintaining a database enabling the conversion of domain names to their numeric IP addresses.
The computer-to-computer exchange of messages.
File Transfer Protocol (FTP)
Tool for retrieving and transferring files from a remote computer.
Measure of frequency of electrical impulses per second, with 1 Hertz equivalent to 1 cycle per second.
A specific geographic location in which an access point provides public Wi-Fi network service.
Very simple devices that connect network components, sending a packet of data to all other connected devices.
Hypertext Transfer Protocol (HTTP)
The communications standard used to transfer pages on the Web. Defines how messages are formatted and transmitted.
Chat service that allows participants to create their own private chat channels so that a person can be alerted whenever someone on his or her private list is on-line to initiate a chat session with that particular individual.
Internet Protocol (IP) Address
Four-part numeric address indicating a unique computer location on the Internet.
Internet Service Provider (ISP)
A commercial organization with a permanent connection to the Internet that sells temporary connections to subscribers.
Research network with new protocols and transmission speeds that provides an infrastructure for supporting high-bandwidth Internet applications.
New IP addressing system using 128-bit IP addresses. Stands for Internet Protocol version 6.
Local Area Network (LAN)
A telecommunications network that requires its own dedicated channels and that encompasses a limited distance, usually one building or several buildings in close proximity.
Metropolitan Area Network (MAN)
Network that spans a metropolitan area, usually a city and its major suburbs. Its geographic scope falls between a WAN and a LAN.
Blogging featuring very short posts, such as using Twitter.
A device for translating a computer's digital signals into analog form for transmission over ordinary telephone lines, or for translating analog signals back into digital form for reception by a computer.
Network Operating System (NOS)
Special software that routes and manages communications on the network and coordinates network resources.
Technology that breaks messages into small, fixed bundles of data and routes them in the most economical way through any available communications channel.