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27 Cards in this Set
- Front
- Back
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What is GPA?
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Global Positioning System - a collection of dozen of satellites orbiting the earth that transmit precise microwave signals.
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What is a Computer Network?
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a collection of computers that communicate with one another over transmission media.
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What is the internet?
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a network of networks.
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What is The Internet?
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Whe collection of netroks that you use when you send email or access the WWW.
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What is a protocol?
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A set of rules that two communicating devices follow.
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What is a switch?
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A special-purpose computer that receives and transmits messages on the LAN.
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What is a NIC?
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A network interface card - a hardware component on eachdevice on anetwork that connects the device's circuitry to the communications line.
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What is a MAC?
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It is Media Access Control - a unique (physical)address assigned to evey NIC when manufactured.
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What is UTP cable?
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Unshielded twisted pair cable -cable used to connectdevices on a LAN
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What are Optical fiber cables?
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cable that uses light rays that are reflected inside the glass core of the cable to transmit data; used from lots of data or over long distance.
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What is Ethernet?
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It is a protocol that specifies hardware characteristics anddescribes how messages are to be packaged andprocessed for transmissions over a LAN.
In 10/100/1000 Mbps. |
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What is WNIC?
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Wireless network interface card.
- enbales connection to wireless networks by communicating with an access pt. |
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What is an Access Point?
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(AP) is a wireless network that facilitates communication among wireless devices and as a point of interconnection between wireless and wired networks.
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What is a Router?
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It is a special-purpose computer that implements the protocol for WANs
- connects your computer to computers owned and operated by your ISP. |
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What is an ISP?
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It is a Internet service provider
- provides IP address - serves as gateway to internet - helps pay for internet |
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What is HTTP?
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hypertect transfer protocol, used to process web pahes.
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What is a browser?
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a program that implements HTTP protocol.
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What is the difference between the WWW and The Internet?
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The WWW is a set of sites and users that process HTTP, while the Internet is the communication that supports the protocol HTTP, FTP, SMTP
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What is URL?
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Universal Resource Locator, a document's address on the Web.
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What is an IP address?
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A series of four dotted decimal bumbers between 0 and 255
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What is DNS?
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Domain Name Server - system that converts user-friendly names into their IP address.
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What is modem?
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- converts the computer's digital data into analog signals.
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Dial-up modem (56k - narrowband)
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modem that performs the conversion b/w analogand digital that the signal canbe carriedover a regular phone line.
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What is DSL? (256 kbps -broadband)
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Digital subscriber line modem - operates on the same lines as voice telephones, but theytelephones operate so that their signals do not interfere with voice telephones.
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What is assemtrical DSL?
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upload = slower than download
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What is (TCP)?
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Transmission control program - o examine the email and break it apart into segments. It then correctly ordered content of segments.
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What are the layers from email to travel?
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Network Access, Internet layer, transport layer, and application layer.
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