Discovering Computers 2016 Tools, Apps, Devices, and the

Discovering Computers 2016 Tools, Apps, Devices, and the

Discovering Computers 2016 Tools, Apps, Devices, and the Impact of Technology Chapter 10 Communicating Digital Content Objectives Overview Discuss the purpose of the components required for successful communications and identify various sending and receiving devices Differentiate among LANs,

MANs, WANs, and PANs Explain the purpose of communications software See Page 450 for Detailed Objectives Differentiate between client/server and peer-topeer networks Describe the various network communications standards and protocols 2016 Cengage Learning. May not be scanned, copied

or duplicated, or posted to a publicly accessible website, in whole or in part. 2 Objectives Overview Describe various types of communications lines Describe commonly used communications devices

Differentiate among physical transmission media See Page 450 for Detailed Objectives Discuss different ways to set up and configure a home network Differentiate among wireless transmission

media 2016 Cengage Learning. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 3 Communications Digital communications describes a process in which two or more computers or devices transfer data, instructions, and information Sending device

Page 450 Transmissio n media Receiving device 2016 Cengage Learning. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 4 Communications

Page 451 Figure 10-1 2016 Cengage Learning. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 5 Networks A network is a collection of computers and devices connected together via communications devices and transmission media Advantages of a network include: Facilitating communications

Sharing hardware Sharing software Pages 452 - 453 Sharing data and information Transferring funds 2016 Cengage Learning. May not be scanned, copied or duplicated, or posted to a publicly accessible website,

in whole or in part. 6 Networks Page 452 Figure 10-2 2016 Cengage Learning. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 7 Networks

A local area network (LAN) is a network that connects computers and devices in a limited geographical area A wireless LAN (WLAN) is a LAN that uses no physical wires Pages 453 - 454 Figures 10-3 10-4 2016 Cengage Learning. May not be scanned, copied or duplicated, or posted to a publicly accessible website, 8

Networks A metropolitan area network (MAN) connects LANs in a metropolitan area A wide area network (WAN) is a network that covers a large geographic area A personal area network (PAN) is a network that connects computers and devices in an individuals workspace with wired and wireless technology Page 455 Figure 10-5

2016 Cengage Learning. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 9 Networks The configuration of computers, devices, and media on a network is sometimes called the network architecture Client/server network Pages 456 - 457 Figures 10-6 10-7 Peer-to-peer network

2016 Cengage Learning. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 10 Communications Software Communications software consists of programs and apps that: Help users establish a connection to another computer, mobile device, or network Manage the transmission of data,

instructions, and information Provide an interface for users to communicate with one another Page 457 2016 Cengage Learning. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 11 Network Communications Standards

and Protocols Ethernet Token ring TCP/IP Wi-Fi Bluetooth UWB IrDA

RFID NFC LTE Page 460 2016 Cengage Learning. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 12 Network Communications Standards and Protocols

Pages 460 - 461 2016 Cengage Learning. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 13 Network Communications Standards and Protocols Page 461 Figure 10-8 2016 Cengage Learning. May not be scanned, copied

or duplicated, or posted to a publicly accessible website, in whole or in part. 14 Network Communications Standards and Protocols Wi-Fi identifies any network based on the 802.11 standard that specifies how two wireless devices communicate over the air with each other LTE is a network standard that defines how high-speed cellular transmissions use broadcast radio to transmit data for mobile communications Bluetooth is a network protocol that defines how two Bluetooth devices use short-range radio waves to transmit data UWB (ultra-wideband) is a network standard that specifies how two UWB devices use short-range radio waves to communicate at high speeds with each other

IrDA transmits data wirelessly via infrared (IR) light waves RFID is a protocol that defines how a network uses radio signals to communicate with a tag placed in or attached to an object, an animal, or a person Pages 462 - 465 2016 Cengage Learning. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 15 Network Communications Standards and Protocols Page 465

Figure 10-9 2016 Cengage Learning. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 16 Network Communications Standards and Protocols NFC (near field communication) is a protocol, based on RFID, that defines how a network uses close-range radio signals to communicate between two devices or objects equipped with NFC technology Page 466

Figure 10-10 2016 Cengage Learning. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 17 Communications Lines Pages 466 - 468 2016 Cengage Learning. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

18 Communications Lines Page 466 Table 10-2 2016 Cengage Learning. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 19 Communications Lines ADSL is a type of DSL that supports faster downstream rates than upstream rates

Page 467 Figure 10-11 2016 Cengage Learning. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 20 Communications Devices A communications device is any type of hardware capable of transmitting data, instructions, and information between a sending device and a receiving device

Page 468 2016 Cengage Learning. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 21 Communications Devices A broadband modem sends and receives data and information to and from a digital line Pages 468 - 469 2016 Cengage Learning. May not be scanned, copied or duplicated, or posted to a publicly accessible website,

in whole or in part. 22 Communications Devices Page 469 Figure 10-12 2016 Cengage Learning. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 23 Communications Devices

A wireless modem uses a mobile phone providers network to connect to the Internet wirelessly from a computer or mobile device Page 469 Figure 10-13 2016 Cengage Learning. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 24 Communications Devices A wireless access point (WAP) is a central communications device that allows computers and devices to transfer data wirelessly

among themselves or to a wired network Page 470 Figure 10-14 2016 Cengage Learning. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 25 Communications Devices A router connects multiple computers or other routers together and transmits data to its

correct destination on a network Page 471 Figure 10-15 2016 Cengage Learning. May not be scanned, copied or duplicated, or posted to a publicly accessible website, 26 Communications Devices Some routers provide additional functionality: Wireless router Broadband router Broadband wireless

router Mobile broadband wireless router Pages 471 472 Figure 10-16 2016 Cengage Learning. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 27 Communications Devices A network card enables a computer or device that does not have built-in networking capability to

access a network Available in a variety of styles Pages 472 - 473 Figure 10-17 2016 Cengage Learning. May not be scanned, copied or duplicated, or posted to a publicly accessible website, 28 Communications Devices A hub or switch is a device that provides a central point for cables in a network Page 473

Figure 10-18 2016 Cengage Learning. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 29 Home Networks Many home users connect multiple computers and devices together in a home network Pages 474 475 2016 Cengage Learning. May not be scanned, copied or duplicated, or posted to a publicly accessible website,

in whole or in part. 30 Transmission Media Transmission media carries one or more communications signals Broadband media transmit multiple signals simultaneously The amount of data, instructions, and information that can travel over transmission media sometimes is called the bandwidth Latency is the time it takes a signal to travel from one

location to another on a network Page 476 Figure 10-19 2016 Cengage Learning. May not be scanned, copied or duplicated, or posted to a publicly accessible website, 31 Physical Transmission Media Page 477 Table 10-3 2016 Cengage Learning. May not be scanned, copied

or duplicated, or posted to a publicly accessible website, in whole or in part. 32 Physical Transmission Media Twisted-pair cable Fiber-optic cable Coaxial cable Pages 477 - 478 Figures 10-20 10-22 2016 Cengage Learning. May not be scanned, copied

or duplicated, or posted to a publicly accessible website, in whole or in part. 33 Wireless Transmission Media Page 479 Table 10-4 2016 Cengage Learning. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 34

Wireless Transmission Media Broadcast radio is a wireless transmission medium that distributes radio signals through the air over long distances Cellular radio is a form of broadcast radio that is in wide use for mobile communications Pages 479 - 480 Figure 10-23 2016 Cengage Learning. May not be scanned, copied or duplicated, or posted to a publicly accessible website,

35 Wireless Transmission Media Microwaves are radio waves that provide a highspeed signal transmission Page 482 Figure 10-24 2016 Cengage Learning. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 36 Wireless Transmission Media

A communications satellite is a space station that receives microwave signals from an earth-based station, amplifies it, and broadcasts the signal over a wide area to any number of earth-based stations Pages 482 - 483 Figure 10-25 2016 Cengage Learning. May not be scanned, copied or duplicated, or posted to a publicly accessible website,

37 Wireless Transmission Media A GPS (global positioning system) is 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 receivers geographical location Page 483 2016 Cengage Learning. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 38

Wireless Transmission Media Page 484 Figure 10-26 2016 Cengage Learning. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 39 Summary Page 485

2016 Cengage Learning. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 40 Discovering Computers 2016 Tools, Apps, Devices, and the Impact of Technology Chapter 10 Communicating Digital Content Chapter 10 Complete

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