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Chapter 1 Network Essentials

AB
kilobytea unit of memory or data equal to 1,024 bytes.
mediarefers to the physical medium (element through which a message is communicated) on which the signals are transmitted.
DNS: Domain Name Systemresolves host names to their respective IP addresses.
throughputthe actual speed of data transfer that is achieved
latencythe total time it takes a data packet to travel from one node to another. when a data packet is transmitted and returned back to its source, the total time for the round trip
End Devicesthose that we as people interact with, like computers, network printers and mobile devices. It is either the source or destination of a message transmitted over the network.
ByteA group of 8 bits
Access pointallows devices to connect to the wireless network without cables. A wireless network makes it easy to bring new devices online and provides flexible support to mobile workers.
Clientcomputer host that have software installed that enable them to request and display the information obtained from the server.
Infrastructurea combined set of hardware, software, networks, facilities, etc. (including all of the information technology related equipment) used to develop, test, deliver, monitor, control, or support IT services.
dataA value that represents something
bitan abbreviation of "binary digit" and represents the smallest piece of data.
bandwidthThe maximum amount of data that can pass from one point to another in a unit of time
switchacts as a controller, connecting computers, printers, and servers to a network in a building or a campus.
routerconnects multiple networks together. They also connect computers on those networks to the Internet.
serverHosts that have software installed that enable them to provide information, like email or web pages, to other hosts on the network.
peer-to-peerA network where computers act as both clients and servers
megabytea unit of information equal to 2 to the 20th bytes or, loosely, one million bytes.


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