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19 Cards in this Set
- Front
- Back
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802.11x-
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Wi-Fi- The fastest growing wireless LAN technology. Allows multiple computers to connect to a LAN through a base station (Wireless access point) up to 150 feet away.
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802.11g
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Low cost and high bandwidth, the newest Wi-Fi network.
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802.11n
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3 times the bandwidth of g. not currently available.
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802.11e
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802.11e- better quality of service, especially the timely delivery of data packets. Good for Voice over IP and video conferencing.
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802.11i
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Higher security, lets businesses use wireless networks for more sensitive transactions.
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e-commerce
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e-commerce- The process of sharing business information, maintaining business relationships, and conducting business transactions through the use of telecommunications networks.
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Ecommerce 1
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1995-2001- tremendous growth and capital investment, self regulated environment, vision of “perfect information marketspace”
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Ecommerce 2
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2001-2006- initially characterized by reduction in IT capital expenditures b/c of Y2K issues, excess telecommunications capacity, and exorbitant valuation of e-commerce companies compared to their potential profitability.
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Fiber optic cable
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replacing copper wires. Use light wavers to carry info. Can transmit ½ gigabit per second. Can transmit lots of multimedia data while handling voice messages at the same time.
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Fields in Excel
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Each data item within a folder. The first row contains the column labels or field names. A group of related characters
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LAN Hub
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LAN Hub- Each computer using a LAN is an individual node, and the Nodes are connected to hubs or switches. A Hub only allows a single message at a time to move across a LAN. Not very good.
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Internet Protocols
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IP- the most common one is TCP/IP (transmission control protocol/internet protocol.) They define how info can be transferred between machines and how machines on the network can be identified with unique addresses.
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Records in Excel
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each individual folder is known as a record. A group of related fields
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Router
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hardware devices or software programs that route messages as they travel between networks via bridges and gateways. Used to be called IMP- interface message processor. Used for packet switching to make sure the hpackets were clear and mistake free.
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Twisted pair cable
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the most common type of LAN cable. Contains copper wires that resemble those in standard telephone cables. Connects a node to a hub or a switch.
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Ultrawideband
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short range wireless technology that transmits ultra high speed signals over a wide spectrum of frequencies.
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WANs
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Network that extends over a long distance. Each network site is a node on the network. Data is transmitted long distance between networks on a collection of common pathways known as the backbone.
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WiMax
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a wireless alternative to cable or DSL. Provides high speed internet access to customers up to 30 miles away using a dish antenna.
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Wireless networks
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- part of the LAN technology. Each node has a tiny radio (sometimes infrared) transmitter that connects to its network port so it can send and receive data through the air. Generally slower than wired LANs are.
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