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IT Concepts > fianl > Flashcards

fianl Flashcards

1
Q

the lower the dot pitch

A

the clearer the images

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2
Q

scanning devices

A

optical scanners, card readers, bar code readers, RFID Readers, MICR

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3
Q

RFID

A

tiny chips in almost everything can be found in products, drivers licenses, passports, etc

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4
Q

MICR

A

used by banks to read checks

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5
Q

Types of Bar codes

A

UPCs (Retail) , MaxiCode (Mail)

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6
Q

SDLC

A

Program specification, Program design, Program code, Program test, Program documentation, Program maintenance

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7
Q

Program Specification

A

programs objectives outputs, inputs, and processing requirements

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8
Q

Program design

A

a solution created with top-down program, pseudocode, flowcharts, and logic structures

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9
Q

program code

A

program is written or coded using a programming language

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10
Q

program test

A

program is tested or debugged

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11
Q

program documentation

A

documentation is ongoing, formalizing written description and processes used in program

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12
Q

program maintenance

A

periodically reviewed to evaluate accuracy

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13
Q

types of memory

A

RAM - temporary and volatile, ROM - nonvolatile storage, Flash memory

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14
Q

how does a hard disk store data

A

read/write heads

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15
Q

WEB 1.0

A

search engines

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16
Q

web 2.0

A

dynamic content (facebook)

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17
Q

web 3.0

A

identifies relationships between data, personalized content

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18
Q

web 4.0

A

mobile web, mobile devices

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19
Q

mass storage devices

A

file servers, network attached storage, RAID, organizational cloud storage

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20
Q

wi-fi

A

bluetooth, cellular, wifi, satellite,microeave, infrared,WeMax, GPS

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21
Q

network topologies

A

point-point, bus, ring,

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22
Q

bandwidth

A

measurement of the width or capacity of the communication channel

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23
Q

modems

A

modulate and demodulate, measured in megabits per second

24
Q

types of operating systems

A

embedded OS (smartphones, tablets), Standalone OS (desktops), Networking OS (used to run networks)

25
Q

disk caching

A

read from the hard disk into memory

26
Q

Types of optical discs

A

CD’s,DCD’s, BD’s

27
Q

URL

A

for browsers to connect you to resources

28
Q

client server

A

use central servers to coordinate and supply services to other nodes on the network.

29
Q

peer-to-peer

A

nodes have equal authority and can act as both clients and servers

30
Q

mesh network

A

newest topology, each node have more than one connection to the other nodes

31
Q

star network

A

each device is connected directly to a central network switch

32
Q

tree network

A

each device id connected to a central node

33
Q

top down analysis

A

used to identify top level components of a complex system,

34
Q

grid charts

A

show relationship between input and output

35
Q

system flowcharts

A

show the flow of input data to processing and to output/distribution of info

36
Q

data flow diagram

A

show the data/info within anf info system

37
Q

extranet

A

private network that connects more than one organization

38
Q

firewall

A

security hardware and software

39
Q

proxy server

A

computer that acts as a gateway/checkpoint in an org

40
Q

VPN

A

creates a secure private connection between a remote user and an organization internal network

41
Q

ergonomics

A

study of human factors related to things people use

42
Q

FiOS

A

fiber optic service used by google and verizon with speeds faster than cable

43
Q

voiceband

A

aka low bandwidth, used for landline telephone communication

44
Q

cold boot

A

starting a computer after its been turned off

45
Q

warm boot

A

restarting computer while the computer is on

46
Q

google chrome, android

A

based on linux

47
Q

virtualization

A

a process that allows a single physical computer to support multiple operating systems

48
Q

Type 2 hypervisor

A

runs inside (hardware-host od-hypervisor-guest os)

49
Q

spiders

A

update search services

50
Q

deep fakes

A

indivuals appearence/message is changed

51
Q

“Anyone can read a blockchain, and anyone can hold a copy of the blockchain.”

A

true

52
Q

components of cloud computing

A

clients, internet, providers

53
Q

Apple Health Web 3.0?

A

yes

54
Q

Types of prototype models

A

rapid throwaway, evolutionary, incremental, extreme

55
Q
A

IT Concepts (4 decks)

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