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34 Cards in this Set
- Front
- Back
data network
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carry character based information between connected computers
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network
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carry voice, video, text and graphics between many different types of devices
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internet
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the network that combines enterprise networks, individual users, and ISP's into a single global IP network
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download
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to transfer data from the computer functioning as a server to the client computer you are using
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instant messaging
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real-time communication between two or more people through text
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real-time
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events or signals that show output as fast as possible, or as they happen
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blogs
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a website where entries are made in journal style
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podcasts
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a digital media file or files that are distributed over the internet using syndication feeds, for playback on portable media players and personal computers
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wikis
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a website that lets visitors add, edit , and delete content, typically without the need for registration
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collaboration tool
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something that helps people collaborate (google docs)
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packet tracer
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a drag-and-drop network simulator developed by Cisco to design, configure, and troubleshoot network equipment within a controlled, simulated program environment
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intranet
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a coroporate system such as a website that is explicitly used by internal employees. can be accessed internally or remotely.
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extranet
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part of a company's intranet that is extended to users outside the company
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wireless technology
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technology that allows communication without needing physical connectivity
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standards
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an internationally recognized definition of technical specifications that ensure worldwide consistency
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bits
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binary digits used in the binary numbering system, either a 1 or a 0
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binary
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a numbering system characterized by 1s and 0s
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source
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the origin of the PDU. can be a process, a host, or a node, depending on the layer to which you are referring
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router
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a network device, typically connected to a range of LAN and WAN interfaces, that forwards packets based on their destination IP addresses
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cloud
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a symbol used to summarize a group of networking devices out of local management control, often the internet itself
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IP
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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
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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
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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
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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
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a network architecture designed to eliminate network downtime caused by a single point of failure
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scalability
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the ability of a protocol, system, or component to be modified to fit a new need
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internetwork
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a combination of many IP subnets and networks, as created by building a network using routers.
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packet
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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
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QOS
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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
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bandwith
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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)
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priority queuing
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a routing feature in which frames in an interface output queue are prioritized based on various characteristics such as packet size and interface type
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authentication
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a process used to verify the identity of a person or process
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firewall
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any combination of hardware device and/or software application designed to protect network devices from outside network users and/or malicious applications and files
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single point of failure
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a system or network designed characterized by one or more major components that are required to maintain operation
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