big idea 4: computer systems & networks - ap csp flashcards ੈ✩‧₊˚

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what is a computing device + examples

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all info from barrons book!! good luck everyone

24 Terms

1

what is a computing device + examples

a physical artifact that can run a program

ex. tablets, computers, smart sensors, routers, etc.

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2

are computing devices computers only

no!! a computer is a computing device but not every computing device is a computer, such as calculators, printers, etc.

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3

what is a computing system

a group of computing devices and programs working together for a common purpose

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4

what is a computer network

a type of computing system; a group of interconnected computing devices capable of sending/receiving data

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5

what is bandwidth

the max amount of data that can be SENT in a fixed amount of time

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6

what is scalability

the capacity for a system to change in size and scale to meet new demands

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7

what is routing

the process of finding a path from sender or receiver

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8

how is bandwidth measured

bits per second

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9

what is the internet

a network or networks; entirely decentralized and a physical network of fiber optics, radio transmitters and cabling

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10

what is a protocol

an agreed upon set of ruled that specify that behavior of a system

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11

what is IP (internet protocol)

IP is responsible for addressing and routing your online requests

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12

how many bits does IPv4 use

32; 2³² IP addresses

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13

how many bits does IPv6 use

128; 2^128 IP addresses

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14

can the IP address of a user’s device change

yes it can change at any time

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15

what is TCP (transmission control protocol)

protocol that defines how computers send packets of data to each other; guide the rules on how data are subdivided into packets before transmission

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16

what is UDP (user datagram protocol)

protocol that allows computer applications to send messages without checking for missing packets to save of time needed to retransmit missing packets

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17

which is more reliable, UDP or TCP

TCP because is does resend packets lost when transmitting

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18

what is fault tolerance

if a system fails, different paths can be used between the sending and receiving computer; redundancy is involved

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19

what is the main difference between the internet and the world wide wed

the internet refers to hardware, www refers to the software used on the internet

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20

what protocol does the world wide web use to transmit data

HTTP

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21

what is sequential computing

computational model where operations are performed in order one at a time

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22

what is parallel computing

involves breaking up a task into smaller, sequential pieces then the pieces are executed all at the same time; consists of a parallel component and a sequential component

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23

how is the speedup of a parallel solution measured

(sequential run time)/ (parallel run time)

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24

what is distributed computing

uses multiple computing devices to run a program instead of a single computer

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