Unit Six: Array

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53 Terms

1

network

computers that are connected to share resources using a data link

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2

internet

network of smaller networks connected using a specific set of rules

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3

IP

internet protocol, the rules of the internet (internet layer)

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4

UDP

user datagram protocol, breaks data into datagrams (transport layer)

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5

ARPA

advanced research projects agency

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6

DARPA

defense advanced research projects agency

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7

ARPANET

a packet-switching network, first network to use TCP/IP protocols

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8

DoD model

department of defense model

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9

Internet protocol suite

application, transport, internet, link

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10

application layer

defines rules for different user application

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11

IMAP

internet message access protocol, used for email (application layer)

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12

POP

post office protocol, used for email (application layer)

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13

SMTP

simple mail transfer protocol (application layer)

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14

VoIP

voice over internet protocol, used for telephony (application layer)

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15

FTP

file transfer protocol, transfers files between client and server (application layer)

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16

SSH

secure shell (application layer)

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17

RDP

remote desktop protocol (application layer)

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18

HTTP(S)

hypertext transfer protocol (secure), provides encrypted connection between browser and website (application layer)

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19

HTML

hypertext markup language, standard language for creating web pages (application layer)

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20

CSS

cascading style sheets (application layer)

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21

server

files stored on a computer (application layer)

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22

client-server model

client sends request to server and server sends requested information back (application layer)

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23

domain name

a name given or linked to an ip address (application layer)

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24

TLD

top level domain, ex: .com (application layer)

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25

IANA

internet assigned numbers authority, manages domain names (application layer)

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26

ICANN

internet corporation for assigned names and numbers (application layer)

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27

URL

uniform resource locator, locates specific files from domain (application layer)

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28

subdomain

any domain part of another domain (application layer)

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29

DNS

domain name system, determines IP address (application layer)

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30

ISP

internet service provider, ex: verizon (application layer)

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31

Root name servers

13 total, contains every single domain name and IP address in the world (application layer)

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32

TCP

transmission control protocol, breaks down request into packets (transport layer)

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33

reliable protocol

lets client know if all packets sent made it to the server

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34

fault-tolerant

even if there is an error, the system can work properly

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35

the internet layer

the IP creates addresses and attaches them to each packet (3rd layer)

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36

IPv4

uses 32-bit addresses, allows for 2^(32) addresses (ex. 43.234.2.752) (internet layer)

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37

IETF

internet engineering task force

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38

MAC address

media access control address, unique physical address (internet layer)

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39

Link layer

manage interface between physically connected nodes on local network (4th layer)

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40

ARP

address resolution protocol (link layer)

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41

RARP

reverse address resolution protocol (link layer)

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42

NDP

neighbor discovery protocol (link layer)

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43

the physical internet

physically transfers binary data from client to server

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44

modem

device that handles both modulation (for outgoing signals) and demodulation (for incoming signals); (physical internet layer)

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45

router

directs internet traffic (physical internet layer)

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46

electricity

one way to send packets, not the fastest or most efficient, can be disturbed by things like lighting

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47

light

fastest way to send packets through infrared light in the form of hair thin, transparent fibers called fiber optic cables

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48

multimode cable

type of fiber optic cable, thicker and can send light at different wavelengths through the same fiber, cause distortions over longer distances

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49

single mode cable

type of fiber optic cable, used for longer distance, thinner and carry just one wavelength or mode

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50

lower frequencies

travel farther since they face less electromagnetic interference and can better pass through objects

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51

bit rate

the number of bits that can be processed per second

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52

bandwidth

the amount of resources available to transmit data

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53

latency

round-trip time information takes to get from client to server and back

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