Big Idea 4 Flashcards

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1
Q

Computing System

A

when various types of computing devices work together for a use

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2
Q

Network

A

when at least two devices are connected and can send and receive data

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3
Q

Paths

A

connections between devices

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4
Q

Routers

A

computing devices along a path that send the information along to the next stop on the path

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5
Q

Internet

A

a network of networks

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6
Q

Data Streams

A

information transmitted via the internet.

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7
Q

How data is sent through the internet

A

the information is broken into somewhat equally sized packets, each with its attached destination and where it will be placed. the packets are sent to the destination in different routes (looks for the fastest rout). the packets arrive out of order and some may be missing. the missing ones are recalled and then all the packets are assembled.

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8
Q

IP Address

A

Internet Protocol Address. when a device connects to the internet, it is given this address so that the internet knows where to route information

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9
Q

Protocols

A

set of rules for transmitting and receiving data. all companies have a common protocol that MUST be used.

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10
Q

TCP/IP (Transmission Control Protocol, internet protocol)

A

TCP creates the packets at the sending location and reassembles them at the receiving one. after the receiving of the packets or not receiving, TCP also sends and acknowledgment back to the sender. IP moves the packets through the network to their target location

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11
Q

UDP (user datagram protocol)

A

Similar to TCP/IP BUT doesn’t send a confirmation message back to the sender when the packets are receives. you will not know if all the data was received. but it is faster.

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12
Q

Redundancy

A

duplicity in the internet by providing multiple path between devices. If one point goal down, the traffic will be redirected to another path.

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13
Q

Fault Tolerant

A

Internet has many connections and paths to allow the ability to work around problems.

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14
Q

Abstract

A

we don’t know where all the internet connection are or how the paths are determines. they just work.

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15
Q

World Wide Web

A

application that runs on the internet. WWW is a collection of web pages, documents, ad files written in HTML. way to search for and share documents.

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16
Q

HTTP

A

Hypertext Transfer Protocol. Protocol used by WWW to control how web page data is requested, sent, and received from browsers and servers where the web pages are stored.

17
Q

HTTPS

A

should be used for any secure trnsaction

18
Q

Types of Processing

A

Sequential - operations executed one after the other. cannot scale. not very efficient (total time = taskA + taskB)

Parallel - program code is separated into smaller sections and executed among separate computers which each run their sequential steps. there is a limit though to its scalability where efficiency is barely improved. (total time = longest task)

Distributed - data is spread across multiple computers. each computer runs the same program on its section of data at the same time. the results are passed to parent computer to combine as one output.

19
Q

Speedup of parallel

A

divide time it took to process the problem sequentially / the time it took to complete it in parallel)

20
Q

Bandwidth

A

The maximum amount of data that can be sent in a fixed period of time over a network connection, typically measured in bits per second.

21
Q

Host

A

computer in a network

22
Q

Routing

A

the process of finding a path from sender to receiver