Chapter 1 Ccna Network Fundamentals

Front 1

data network

Back 1

carry character based information between connected computers

Front 2

network

Back 2

carry voice, video, text and graphics between many different types of devices

Front 3

internet

Back 3

the network that combines enterprise networks, individual users, and ISP's into a single global IP network

Front 4

download

Back 4

to transfer data from the computer functioning as a server to the client computer you are using

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instant messaging

Back 5

real-time communication between two or more people through text

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real-time

Back 6

events or signals that show output as fast as possible, or as they happen

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blogs

Back 7

a website where entries are made in journal style

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podcasts

Back 8

a digital media file or files that are distributed over the internet using syndication feeds, for playback on portable media players and personal computers

Front 9

wikis

Back 9

a website that lets visitors add, edit , and delete content, typically without the need for registration

Front 10

collaboration tool

Back 10

something that helps people collaborate (google docs)

Front 11

packet tracer

Back 11

a drag-and-drop network simulator developed by Cisco to design, configure, and troubleshoot network equipment within a controlled, simulated program environment

Front 12

intranet

Back 12

a coroporate system such as a website that is explicitly used by internal employees. can be accessed internally or remotely.

Front 13

extranet

Back 13

part of a company's intranet that is extended to users outside the company

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wireless technology

Back 14

technology that allows communication without needing physical connectivity

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standards

Back 15

an internationally recognized definition of technical specifications that ensure worldwide consistency

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bits

Back 16

binary digits used in the binary numbering system, either a 1 or a 0

Front 17

binary

Back 17

a numbering system characterized by 1s and 0s

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source

Back 18

the origin of the PDU. can be a process, a host, or a node, depending on the layer to which you are referring

Front 19

router

Back 19

a network device, typically connected to a range of LAN and WAN interfaces, that forwards packets based on their destination IP addresses

Front 20

cloud

Back 20

a symbol used to summarize a group of networking devices out of local management control, often the internet itself

Front 21

IP

Back 21

network layer protocol in the TCP/IP stack offering a connectionless inter-network service. IP provides features for addressing, type-of-service specifications, fragmentation, and reassembly, and security. RFC 791

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TCP

Back 22

transmission control protocol. a layer 4 protocol of the TCP/IP model, TCP lets applications guarantee delivery of data across a network

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convergence

Back 23

the process by which routers recognize that something has occurred that changes some routers' routes, reacts to the event, and finds the now-currently best routes

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fault tolerance

Back 24

the design on networks that can continue to operate without interruption in the case of hardware, software, or communications failures

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redundancy

Back 25

a network architecture designed to eliminate network downtime caused by a single point of failure

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scalability

Back 26

the ability of a protocol, system, or component to be modified to fit a new need

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internetwork

Back 27

a combination of many IP subnets and networks, as created by building a network using routers.

Front 28

packet

Back 28

when used generically, this term refers to end-user data along with networking headers and trailers that are transmitted through a network. specifically it is end-user data, along with the network or internet layer headers and any higher-layer headers, but no lower-layer headers or trailers

Front 29

QOS

Back 29

a control mechanism that can provide different priorities to different users or data flows, or guarantee a certain level of performance to a data flow in accordance with requests from the application program

Front 30

bandwith

Back 30

a measurement of the speed of bits that can be transmitted over a particular link. amount of data that can be transmitted in a certain amount of time. for digital it is expressed in bits per second (bps)

Front 31

priority queuing

Back 31

a routing feature in which frames in an interface output queue are prioritized based on various characteristics such as packet size and interface type

Front 32

authentication

Back 32

a process used to verify the identity of a person or process

Front 33

firewall

Back 33

any combination of hardware device and/or software application designed to protect network devices from outside network users and/or malicious applications and files

Front 34

single point of failure

Back 34

a system or network designed characterized by one or more major components that are required to maintain operation