ICT 2020 Flashcards
hard disc uses what type of media?
magnetic media
name 2 differences between RAM and ROM
- RAM is faster than ROM because programs can be run faster and loaded quicky
- RAM has a VOLATILE memory which means that it temporarily stores data that can be used to run applications and not be used for long term data storage
describe 2 ways in which the improper disposal of digital devices could harm human health
- they can leak harmful substances such as mercury than can pollute the environment and release toxic fumes that can damage our health
- if we come in direct contact with hazardous materials during e-waste processing we can damage our skin.
what is the function of a web browser?
it allows users to access and view websites on the internet
what are 2 benefits of upgrading a game software?
- to have access to new gaming features
- to enhance her gaming experience through higher quality image and sound
what is meant by the term latency?
the delay in data transmission
3 ways latency can be reduced
- shorten the distance
- use a wired connection
- close applications that are unecessary
what is the role of an ISP?
it is a company that provides an internet connection thought a router
what is the function of a gateway?
it is a device that allows 2 or more different networks to communicate with eachother
what are 2 benefits of a client - server network?
- all the data and resources can be stored on a central server. this makes it easier to control access to the data stored
- these networks can handle multiple users and devices efficiently, which can lead to a better performance and faster access to rescourses
what are 2 ways an inkjet performs differently to a later printer?
- a laser printer uses lasers to transfer dry ink onto the paper which produces sharp texts and graphics
- inkjet printers work by spraying droplets of liquid ink onto paper which is slower than a laser printer
what are 2 ways that social bookmarking helps students?
- students can organize their saved links using tabs. this helps us quickly find specific resources related to what research we have.
- we can also share our book marks with everyone so they can benefit from each others research which is ideal for group projects
describe how an OMR works
- resposnses are scaneed and analysed by the software to determine if the responses are in the right or wrong place
why do we use VPn?
to provide an encrypted connection because data can be intercepted by unauthorized users
why do we compress our files?
to reduce the file size so it can be uploaded faster
why is NFC a fast payement method?
users dont have to insert their card or enter a PIN because NFC uses a contactless payment method
describe how streaming works
- it is where part of the file is downloaded to a small part of the memory and played strught away while more of the file is downloaded
describe how the amount of bandwidth affects the streaming experience
the more bandwidth there is, the more data can be transferred per second, reducing the lag that could be caused while streaming
what is an open source software?
it is a software that is available for users to modify to their liking
give an example of an open source software
linux
state 2 functions of an operating system
- processing information
- running applications
