class 2 pp and youtube vids Flashcards
what is cloud computing?
the on demand deliver of IT resources via the internet
how is the pricing of cloud computing
with pay as you go prices
what does cloud computing allow you to do? and how?
can access technology services such as computing power, storage and databases
access from cloud provider such as Amazon Web Services
can make businesses more agile
reduce costs
instantly scale
why do organization use cloud computing?
for data backup
disaster recovery
virtual desktops
software development
testing
big data analytics
customer facing web applications
why are financial companies using cloud services?
to prevent real time fraud
prevention
why does cloud computing save you costs?
no need to make large upfront investments in hardware
no need to overpay for capacity you don’t use
can trade capital expense for variable expense
only pay for IT as you need it
what are the components of an information system?
hardware
software
database
network
people
how does the IPO process work?
input –> processing
processing –> output
output –> feedback
feedback –> input
what is a system?
a group of different things working together to complete a certain task
hardware
the equipment, such as a computer, printers and other physical devices
include all inout and output devices
software
what makes the hardware do stuff that is usefull to us
what makes the computer work
business processes
what we do, in part with the software but also with the data
data
the information we need for the business processes and the software
people
the individuals
the users of information systems, who create value and use them
how can people be a risk? what about software
people are vulnerable
people make errors
people cause risk
software, with all the right shit, will do the same thing properly without risk
when were computers invented?
depends on the pov
in this case, we are talking about the electronical computers
appeared in like beginning of the 20th century with technology
when did we start using computers?
around the 1950s
at the same time of the introduction of computer language
the first business uses of in business?
around 1950s and 1960s
when did the microprocessor first appear?
late 60s, early 70s
whats a microprocessor?
basically a personal computer
much smaller
stand-alone mainframes
not really smart
a lot of people could use one
around 1950s and 60s
worked alone
dumb terminals and mainframes
pretty rare now
where are mainframes stills used?
banks
businesses
government establishments
Local Area Networks (Client/Server Computing)
start connecting a bunch of computers together
computer could share different services, share hardware
Evolution of the Modern
IT Infrastructure
- Stand-alone Mainframes
- Mainframe and Dumb Terminals
- Stand-alone Personal Computers
- Local Area Networks (Client/Server Computing)
- Enterprise Computing
- Cloud Computing and Mobile Computing
Moore’s law
a guide developed by Gordon Moore
a graph illustrating how microprocessors have been evolving
relates to thin crease of number of transistors increase over time
in his law, it is explained that the number of transistors increases approximately every two years due to technological advancements
computers get more transistors with these getting smaller and smaller, making computers OP
microprocessors are getting cheaper
who is gordon Moore
one of the inventors of microprocessor with Intel
which one is more modern, HHD or SSD?
SSD boy
is a program necessarily an application?
is an application necessarily.a program?
a program is not necessarily an application
an application necessarily a program
open systems
systems with open environments
allows different individuals to collaborate in the creation and improvement of the system
not proprietary, not closed environment
like linux
closed system
very controlled environment
such as apple
open source
software where you have access to the original source code written by programmers
ability to adapt and transform a free software
developed by many people over time
microprocessors are the brain of the computer
true or false?
true
von Truman architecture
input goes into the cpu
cpu has arithmetic unit to do the math
cpu has the control unit that controls
cpu basically does all the work
the instructions that tell cpu is in the Memory
what type of memories in the memory
ROM (Read only memory)
RAM (random access memory)
ROM (Read only memory)
where the basic instructions are going to be
RAM (random access memory)
main memory
where software and data is gonna be found
what happens when RAM is full?
it makes computer appear slow
what do you do to make computer go faster when RAM is full?
you add memory (RAM)
what do inputs do?
get info in the computer
what do outputs do?
get info out of computer
permanent memory?
storage in the hardware
memory doesn’t get erased if turn off computer
what happens to RAM when turn off computer?
memory is erased
what makes the hardware useful?
the software
two main types of software
system software (OS)
application software
general application software
word
excel
etc
can run on multiple operating systems
system software
whats connected to the machine and that makes it useful
a set of instructions that serves primarily as an intermediary between computer hardware and application programs
software
a set of computer programs that enable the hardware to process data
computer program
the sequence of instructions for the computer, which comprise software
documentation
what tells us how to use the software
application software
a set of computer instructions that provide more specific functionality to a user
what is the operating system?
main part of the system software
supervises the overall operation of the computer by monitoring the computer’s status, scheduling operations, and managing input and output processes
gives you the impression that there are many things happening at the same time
functions performed by the systems software
- Control and support information processing activities
- Control and support peripherals (e.g. printers, keyboard, mouse)
- Enables self-regulatory functions of the computer
- Provides commonly used sets of instructions for all applications
- Supports application software by directing the computer’s basic functions
major types of application software
- Spreadsheets
- Word Processing
- Desktop Publishing
- Data Management
- Presentation
- Graphics
- Personal Information Management
- Personal Finance
- Web Authoring
- Communications
when Is data worth the most?
when it ss the most contextualized
when it is turned into knowledge
what type of information system will workers use? what is it the most based on?
transaction. processing system
based on action
what type of information system will middle managers use? what is it the most based on?
management information systems
based on tactic and action
what type of information system will senior managers use? what is it the most based on?
decision support systems
based on strategy and tactic
what type of information system will executives use? what is it the most based on?
executive information system
based on strategy
what is the main goal cloud computing?
externalizing the information systems
making more of a commodity rather than an expense
making it way more efficient
make it easy to scale up or scale down
what is cloud computing?
- Provides On-Demand Self-Service
- Enables organizations to utilize resources more efficiently
- Provides fault tolerance and redundancy
- Makes it easy to scale up or down
using a third property to help
ex: amazon web services, google dox, drop box
what are issues with cloud computing?
its in the cloud
there could be security breaches
what are three big types of cloud computing services? (study this shit, add to it)
infrastructure-as-a-service (IAAS)
Platform-as-a-service (PAAS)
Software-as-a-service (SAAS)
Three Major Benefits of Cloud Computing to Individuals & Organizations
1: Positive impact on employees
2: Can save money
3: Can improve organizational flexibility and competitiveness
why does cloud computing have a positive impact on employees?
Access information anywhere, on any device, across organizational boundaries
how can cloud computing save money?
Reduces or eliminates need to purchase hardware, build and install software and pay software licensing fees
how can cloud computing improve organizational flexibility and competitiveness?
Using only computing resources needed at any given time, can scale operations up or down as needed