process of sharing data, programs and information between two or more computers Show concept related to using computer networks to link people and resources widespread use of mobile devices with wireless internet connectivity allows individuals to stay connected with one another from almost anywhere at any time electronic systems that transmit data from one location to another basic elements of a communication system (4) 1. Sending and receiving devices. these are often a computer or specialized communication device sending and receiving devices these devices act as an interface between the sending and receving devices and the communication channel these are rules and procedures that coordinate the sending and receiving devices by precisely defining how the message will be sent across the communication channel data transmission specifications the actual connecting or transmission medium that carries the message and these channels actually carry the data from one computer to another 2 categories of communication channels uses a solid medium to connect sending and receiving devices physical connections include: a. twisted-pair cable consists of pairs of copper wire that are twisted together high-frequency transmission cable, replaces the multiple wires of telephone lines with a single solid-copper core that has over 80 times the transmission capacity of twister pair used to deliver television signals and to connect computers in a network are used by telephone lines and ethernet cables transmit data as pulses of light through tiny tubes of glass fiber-optic cable is capable of sending/receiving a speed of 1 petabit per second (1 million gigabits) lighter, faster, and more reliable at transmitting data which is rapidly replacing twisted-pair cable telephone lines move data through the air by using radio waves technologies used for wireless connections bluetooth, Wi-Fi, microwave, WiMax, cellular, satellite connections short-range radio communication standard that transmits data over short distances of up to approximately 33 feet widely used for wireless headsets, printer connections, and handheld device uses high-frequency radio signals to transmit data Wi-Fi (wireless fidelity) uses high-frequency radio waves which is sometimes referred to as line-of-sight communication as it only travels in a straight line transmitted only over relatively short distance in a straight line microwave dishes or antennas will be used for _______________ connections Worldwide Interoperability for Microwave Access a new standard that extends the range of Wi-Fi networks using microwave connections commonly used by universities and others to extend the capability of existing Wi-Fi networks uses multiple antennae (cell towers) to send and receive data within relatively small geographic regions (cells) uses satellites orbiting about 22,000 miles above the earth as microwave relay stations most satellites are offered by IntelSat which is known as International Telecommunication Satellites Consortium used to send and receive large volumes of data term relating to sending data to a satellite receiving data from a satellite network of satellites owned and managed by the Department of Defense continuously sends location information to earth Application: Global Positioning device that use the information to uniquely determine the geographic location of the device Global Positioning System (GPS) uses infrared light waves to communicate over short distances tv remote control is an example of continuous electronic waves presence or absence of an electronic pulse - the on/off binary signals process of convertign digital into analog signal process of converting analog into digital signal it enables digital personal computers to communicate across the different media, including telephone wires, cable lines, and radio waves transfer rate of modems is measured in megabits per second (Mbps) uses standard phone lines to create a high-speed connection directly to your phone company's offices digital subscriber line (DSL) uses the same coaxial cable as your television that creates high-speed connections using the system unit's USB or ethernet port Wireless Wide Area Network (Wireless Modem) connection services include 1. Dial-up Services uses existing telephones and telephone modems to connect to the internet provided by telephone companies using existing telephone lines to provide high-speed connections and it is much faster than dial-up digital subscriber line (DSL) service provided by cable television companies using their existing television cables showing up in some areas, but it is a new technology that provide speeds faster than cable or DSL connections fiber-optic service (FiOS) uses satellites to provide wireless connections satellite connection services satellite connection services is slower than DSL and cable modem support voice and data transmission to wireless devices using cellular networks cellular service providers Is a high frequency transmission medium that has a single solid copper core quizlet?A high frequency transmission cable, replaces the multiple wires of telephone lines with a single solid-copper core. In terms of the number of telephone connections, a coaxial cable has over 80 times the transmission capacity of twisted pair.
What type of signals data are represented in a copper media?For copper cable media, the signals are patterns of electrical pulses. For fiber, the signals are patterns of light. For wireless media, the signals are patterns of radio transmissions.
What are the four categories of data transmission?Types of data transmission. Simplex transmission. In simplex data transmission mode, data flows in one direction. ... . Half duplex transmission. Half duplex or semi-duplex transmission mode allows data to flow in both directions, but only one direction at a time. ... . Full duplex transmission. ... . Synchronous transmission.. Is a transmission medium that carries the message from the sending devices to receiving devices?Communication channel. This is the actual connecting or transmission medium that carries the message. This medium can be a physical wire or cable, or it can be wireless. act as an interface between sending and receiving devices.
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________ is a high-frequency transmission medium that has a single solid-copper core.
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