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Terms in this set (71)communications a process in which two or more computers or devices transfer data, instructions, and information. sending device initiates an instruction to transmit data, instructions, or information communications channel transmission media on which the data, instructions, or information travel receiving device accepts the transmission of data, instructions, or information Internet Worldwide collection of networks that links millions of businesses, government agencies, educational institutions, and individuals Web worldwide collection of electronic documents on the Internet that users access through a Web browser transmission of messages and files via a computer network Instant messaging real-time one-on-one Internet communications service that notifies you when one or more people are online and then allows you to exchange messages, pictures, files, audio, and video newsgroups online areas in which users have written discussions about a particular subject blogs time-stamped articles on a network that reflect the author's interests, opinions, and personality wikis collaborative web sites that allow users to create, add to, modify, or delete web site content RSS specification that enables web content to be distributed to subscribers VOIP conversation that takes place over the Internet using a telephone connected to a computer or mobile device or telephone adapter FTP Internet standard that permits users to upload and download files to and from FTP servers on the Internet Web folders location on a Web server (also known as an HTTP server) to which users publish documents and other files video conferencing real-time meeting between two or more geographically separated people who use a network to transmit audio and video data fax machine or computer fax/modem transmits and receives documents over telephone lines text messaging allows users to send and receive short text messages on a phone or other mobile device picture messaging users can send pictures and sound files, as well as short text messages, to a phone or other personal mobile device, or computer video messaging users can send short video clips, usually about 30 second in length, in addition to all picture messaging services wireless internet access point allows people to connect wirelessly to the internet at home, work, and school hot spot a wireless network that provides internet connections to mobile computers and other devices. cyber cafe a coffeehouse, restaurant, or other location that provides personal computers with Internet access to its customers global positioning system (GPS) a navigation system that consists of one or more earth-based receivers that accept and analyze signals sent by satellites in order to determine the receiver's geographic location collaborate work online with others connected to a server web conference an online meeting that takes place on the Web groupware software that helps groups of people work together on projects and share information over a network voice mail allows someone to leave a voice message for one or more people. network a collection of computers and devices connected together via communications devices and transmission media local area network (LAN) a network that connects computers and devices in a limited geographical area such as a home, school computer, laboratory, office building, or closely positioned group of buildings. wireless LAN (WLAN) a LAN that uses no physical wires wireless area network (WAN) a network that covers a large geographic area using a communications channel that combines many types of media such as telephone lines, cables, and radio waves. client/server network one or more computers acts as a server and the other computers on the network request services from the server. server controls access to the hardware, software, and other resources on the network and provides a centralized storage area for programs, data, and information. clients other computers and mobile devices on the network that rely on the server for its resources. network topology refers to the layout of the computers and devices in a communications network ethernet a network standard that specifies no central computer or device on the network (node) should control when data can be transmitted; each node attempts to transmit data when it determines the network is available to receive communication. token ring standard specifies that computers and devices on the network share or pass a special signal, called a token, in a unidirectional manner and in a preset order. transmission control protocol/ internet protocol (TCP/IP) a network standard, specifically a protocol, which defines how messages are routed from one end of a network to the other, ensuring the data arrives correctly. 802.11 a series of network standard that specifies how two wireless devices communicate over the air with each other. wi-fi (wireless fidelity) identifies any network based on the 802.11 series of standards. bluetooth a network standard, specifically a protocol, which defines how two Bluetooth devices use short-range radio waves to transmit data. ultra-wideband (UWB) a network standard that specifies how two UWB devices use short-range radio waves to communicate at high speeds with each other. RFID a standard, specifically a protocol, which defines how a network uses radio signals to communicate with a tag placed in or attached to an object, an animal, or a person. WiMAX a newer network standard developed by IEEE that specifies how wireless devices communicate over the air in a wide area. wireless application protocol (WAP) a standard, specifically a protocol, which specifies how some mobile devices such as smart phones can display the content of Internet services such as the Web, e-mail, and chat rooms. communications software consists of programs that (1) help users establish a connection to another computer or network; (2) manage the transmission of data, instructions, and information; and (3) provide an interface for users to communicate with one another dial-up line a temporary connection that uses one or more analog telephone lines for communications dedicated line a type of always-on connection that is established between two communications devices DSL transmits at fast speeds on existing standard copper telephone wiring Fiber to the premises (FTTP) uses fiber-optic cable to provide extremely high-speed Internet access to a user's physical permanent location T-carrier line any of several types of long-distance digital telephone lines that carry multiple signals over a single communications line ATM a service that carries voice, data, video, and multimedia at very high speeds Communications device any type of hardware capable of transmitting data, instructions, and information between a sending device and a receiving device modem the communications device that converts digital signals to analog signals before they are transmitted over standard telephone lines DSL modem sends digital data and information from a computer to a DSL line and receives digital data and information from a DSL line cable modem a digital modem that sends and receives digital data over the cable television network wireless modem uses the cell phone network to connect to the Internet wirelessly from a notebook computer, smart phone, or other mobile device network card an adapter card, PC Card, ExpressCard module, USB network adapter, or flash card that enables the computer or device that does not have built-in networking capability to access a network bandwidth the amount of data, instructions, and information that can travel over a communications channel latency the time it takes a signal to travel from one location to another on a network transmission media consist of materials or substances capable of carrying one or more signals broadband transmit multiple signals simultaneously twisted-pair cable consists of one or more twisted-pair wires bundled together. noise an electrical disturbance that can degrade communications coaxial cable consists of a single copper wire surrounded by at least three layers: (1) an insulating material, (2) a woven or braided metal, and (3) a plastic outer coating fiber-optic cable consists of dozens or hundreds of thin strands of glass or plastic that use light to transmit signals. broadcast radio a wireless transmission medium that distributes radio signals through the air over long distances such as between cities, regions, and countries and short distances such as within an office or home cellular radio a form of broadcast radio that is used widely for mobile communications, specifically wireless modems and cell phones microwaves radio waves that provide a high-speed signal transmission communications satellite a space station that receives microwave signals from an earth-based station, amplifies the signals, and broadcasts the signals back over a wide area to any number of earth-based stations Recommended textbook solutions Engineering Electromagnetics8th EditionJohn Buck, William Hayt 483 solutions Introduction to the Theory of Computation3rd EditionMichael Sipser 389 solutions
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COMPUTER SCIENCE True/False: A sentinel loop should not actually process the sentinel value. Verified answer
COMPUTER SCIENCE Prove that the slack form given to the PIVOT procedure and the slack form that the procedure returns are equivalent. Verified answer Other Quizlet setsPSY 266 CH 1 Review28 terms hosmon2 PF-First Semester Final20 terms eb206545 Consumer Health18 terms rtarleto AP Biology Chapter 2130 terms tennissandy Related questionsQUESTION
A major cause of ---- is the difference between what a firm promises about a service and what it actually delivers 2 answers QUESTION An older digital camera without wireless networking support is malfunctioning, so the photos need to be backed up to the computer. Which port on the computer can the camera owner use? 4 answers QUESTION Operating systems typically include a firewall or a user can purchase or download software from a third party. (T/F) 2 answers QUESTION What is an accurate statement about infrastructure discovery? 15 answers Is a network protocol that defines how messages data are routed from one end of a network to the other ensuring the data arrives correctly?The Transmission Control Protocol (TCP) is a transport protocol that is used on top of IP to ensure reliable transmission of packets. TCP includes mechanisms to solve many of the problems that arise from packet-based messaging, such as lost packets, out of order packets, duplicate packets, and corrupted packets.
Is a network protocol that defines how two devices use short range radio waves to transmit data?Bluetooth is a network standard, specifically a protocol, that defines how two Bluetooth devices use short-range radio waves to transmit data.
Which protocol allows devices to communicate with each other?The most important protocols for data transmission across the Internet are TCP (Transmission Control Protocol) and IP (Internet Protocol). Using these jointly (TCP/IP), we can link devices that access the network; some other communication protocols associated with the Internet are POP, SMTP and HTTP.
What is called a protocol?A protocol is a set of rules and guidelines for communicating data. Rules are defined for each step and process during communication between two or more computers. Networks have to follow these rules to successfully transmit data.
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A network protocol that defines how messages (data) are routed from one end of a network to another
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