Flashcards
flash cards
Flashcards do conjunto (154)
- 1communicationyou can use services like email and messaging applications to communicate with others around the world.
- 2real time servicesan example of a real time service would be an electrical bus stop that changes the bus time every second to make it real time.
- 3commerceonline shopping like amazon and ebay that let you buy things around the world using internet
- 4governmentto pay personal taxes online for example banks like lloyds
- 5educationgoogle has many education services such as meet to video call and classroom to let the teacher give students homework
- 6entertainmentthis could range to social media platforms like instagram to youtube where you watch videos
- 7businesscompanies using websites to advertise themselves while efficiently saving money
- 8download servicesan example of download services would be steam where you can get games online or the nintendo eshop.
- 9VLEalso known as virtual learning environment is where you can learn with other people around the world using the internet for example google classroom.
- 10pay per clickbig companies use this in order to get money every time a user clicks the link in the advertisement
- 114 types of adverts link, banner, pop up, emailLinks are for you to click on if you are interested
Banners usually have distracting and flash animation to catch your attention
Pop ups are annoying as they open a new tab on your browser
Email spam advertisements are bad as they have your email address and can practically do anything they want with it - 12why companies advertise onlinecompanies advertise online as it is easier and more efficient as people use social media a lot more often
- 13how online ads can be annoyingonline ads can be annoying as they pop up at random times when they are unwanted and make you wait a bit to skip or close them
- 14file compressionmaking the file size smaller by compressing it and changing the file type
- 15indexAn index is a method of sorting data by creating keywords or a listing of the data
- 16algorythman algorithm is a set of commands made to start something
- 17benefits of compressionthe benefits of compression are that it makes the file more compact and make them take up less space in your storage
- 18advantage of online softwareit is good as if something wrong happens to the hardware then everything is saved online
- 19disadvantage of online softwareyou have to wait in order to let things download
- 20advantage of standalone softwareyou can store it in physical form
- 21disadvantage of standalone softwareif anything breaks then it all gets deleted and you cant restore it
- 22backupto save something to the online cloud
- 23restoreto take something from the cloud back to the hardware
- 24advantages of collab workits an easy way of sharing work with people even if they arent in your area
- 25importance of version controlit can be used to tell what version of a document is the newest or most recent
- 26levels of accessits used to block certain users from viewing things they should not see online
- 27file permissionsettings made to control what some users can do to a file, for example edit or write and delete
- 28online communitiessuch as facebook, where a group of people form a community
- 29network of friendswhere you and your friend are connected through a network
- 30virtual worldeverything to do with digital spaces and software
- 31bloga document made by a person usually in the form of a diary describing peoples life
- 32microbloga small version of the blog
- 33chatroomalso known as a group chat, where multiple people can send messages in the same space
- 34wikia website used to view information, it can be edited if you are a member but its moderated so you could be banned for misuse
- 35podcastan audio or video talking about a hobby like topic, usually for entertainment purposes
- 36chata place where you and a friend can exchange messages online or with data
- 37what is a netiquettea netiquette is a set of rules you need to follow online, mostly used to prevent bullying on social media or hackers in videogames
- 38profileapersonal information you have linked to an account on social media
- 39avatara personalised character used for social media, can sometimes be your face or not
- 40what is a voipa voip is an online service used for video conferencing such as skype
- 41advantagesan advantage of it is that you can go on video call where ever you are
- 42disadvantagea disadvantage is that you need good wifi or it ends up cutting off the sound and lagging
- 43equipment requiredto do this you will need at least one form of camera such as the one bult into your phone plus a speaker, those make audio and video to see and hear you.
- 44ubiquitous computingwhere processors are built inside everyday objects like clothes or vehicles
- 45RFID chipsa way of embeding things to everyday objects for many uses such as letting cats go to cat flaps or shopping sensors
- 46cloud computingthe cloud is a place where all data online can save so if a hardware breaks then all data is still safe with your account
- 47benefits of cloud computingeverything can be saved so you are guaranteed to be safe
- 48drawbacks of cloud computingyou always need an internet connection to access these things so if the net is down all your data is unacessable
- 49Network Infrastructure
- 50Serverruns special software to serve other computers like file, web and email
- 51Clienta device that uses the service provided by a server like a computer
- 52Routerdevice that directs data through a network, they are smart and find the fastest route to improve the experience
- 53Backbonethe large cable usually fibre optic that connects many devices to the core of the internet
- 54ISP
- 55PoPa point of presence is an access point to the internet
- 56NAPa network access point is where different networks interconnect
- 57dial up connectionsthe cheapest way to acces the internet. it uses telephone lines therefore it is really slow and can have errors often
- 58broadbandit is the fastest internet possible as it uses physical wires. however due to those wires you can only use it with a personal computer
- 59wirelessit is the easiest way to access the internet as you can use it anywhere however it can be interrupted with any other signals making it slower than broadband
- 60bandwidth speed
- 61HTTPhypertext transfer protocol handles what we do on the web and requests to load pages from a server
- 62HTTPSsame as http however the s stands for secure meaning its less likely to get hacked or stolen data
- 63FTPfile transfer protocol old protocol used to upload files from a server
- 64TCPtransmission control protocol its responsible for breaking data into packets
- 65IPinternet protocol used for handling the packets of data and sending them over the net
- 66web page layout
- 67hyperlinkthey connect web pages together, when you click on it you get redirected to another page
- 68web serverswhere websites are stored, the page gets downloaded to you pc temporeraly when you open one
- 69browserapps allowing users to enter a url and view a web page, the browsers uses html code to display the page
- 70URL
- 71URLsplit in to 3 parts. the protocol where it uses a command to load the page. a domain where and what page it is to load. a path showing what part of the page you are on
- 72search enginethe software used to search the web
- 73store and forwardinformation is sent to a station where it is kept and sent at a later time to the it's destination or to another station
- 74address book/ contact groupa book full of peoples numbers and emails
- 75CCcarbon copy, a copy of the work anyone knows who has access to
- 76BCCblind carbon copy, a copy of the work nobody knows who has acess to
- 77benefits of using an emailit is a fast and accessible way to send people messages immages or videos
- 78drawbacks of using emailif the other person doesn't have an email you cant send it to them
- 79SMTPsimple mail transfer protocol. if something doesnt send it will keep sending it until it sends
- 80IMAPinternet message access protocol lets you access your email on a server
- 81POP3post office protocol 3 is where you download emails from the server then emails could be deleted
- 82webmailwhere all your messages stay on a server as they are backed up
- 83emails clientemails downloaded to client machine
- 84Data packet exchange diagram
- 85packet switchingthe process of data being broken down into small packets before being sent through a network
- 86advantages of packet switchingits a fast and convenient way of transferring data
- 87disadvantages of packet switchingthe speed of it depends on the internet connection therefore if your internet is bad then it will be slow
- 88codecsa codec is a program that compresses data to enable faster transmission and decompresses received data
- 89simplexsignals go in one direction eg. tv and remote
- 90full duplexsignals go both directions eg. mobile phone
- 91half duplexsignals go both directions but not simultaneously eg. walkie talkies
- 92serial and parallel transmitionin serial, bits of data are transferred one at a time but in parallel, bits are transferred simultaneously
- 93benefit and limitation of serialits good over large distances however its slower
- 94benefits and limitations of parallelyou can only use it over short distances however its faster
- 95utpunshielded twisted pair uses copper wires that are twisted together
- 96stpshielded twisted pair also uses copper wires however they are shielded with tinfoil to stop signals from other devices
- 97advantages of utp/stpcheaper than other methods and reliable. has protective foil to cancel unwanted signals
- 98disadvantages of utp/stpits slow and low capacity as well as being used only for short distances
- 99coaxial cablea solid copper wire with thick multi layer shielding used mostly for TVs
- 100benefits of coaxit is very reliable and secure making it the best for many uses
- 101drawbacks of coaxits used over short distances and its low capacity
- 102fibre opticstrands of glass carrying data used for the backbone of the network
- 103advantages of fibreits fast and can be used over longer distances with no interference
- 104disadvantages of fibreit is really expensive
- 105infareda light shot into a receiver that sends signals letting the receiver know what to do
its reliable however if something is in the way then the signal wont work - 106microwaveeg. bluetooth. a wave signal used for short distances
it can be used wherever and physical objects dont stop the signal due to having receivers but it can be stopped by other devices - 107satelliteuses satellites in space to relay data between points on earth eg. gps
- 108advantagesgood for very long distances
- 109disadvantagesreally expensive however the prices drop annually
- 110network interface cardwhat allows all the computers to become part of the network
- 111network access pointa way to access the internet. can be physical or digital
- 112client processinguses the clients computer to process web page data
- 113server processinguses web server to process web page data
- 114examplesinteractive calendar, widget, web form
- 115advantagesthe speed for client and the efficiency for server
- 116disadvantagesrelies on computer speed for client and security for server
- 117databasea structured collection of data
- 118tablewhere a set of data is stored
- 119fielda column where data is stored
- 120recordone row that stores data
- 121primary keya special field with a unique identifier
- 122foreign keyits use is to link to the suppliers table
- 123relationshipdatabases need more than one table to store all the data
- 124data types and usestext, number, date/time, boolean
- 125online and local databaselocal is a database inside a network and online is a database that can be accessed anywhere around the world
- 126one feature of online/local databaseshops like argos and search engines
- 127BDMSsoftware that allows you to make and use your own database
- 128SQLthe language used by BDMS to actually make and search databases
- 129presence checkensures data is entered into a field and not left blank
- 130range checkused to ensure data falls between a set range
- 131format checkused to ensure data is in the correct format
- 132check digitused to ensure the data received is the same as the data transmitted
- 133—bold text
- 134—.
- 135—start paragraph
- 136—add images
- 137—.
- 138—start list
- 139—.
- 140—start hypertext markup language
- 141—starts the body of the
- 142—start heading 1
- 143threats to data
- 144how to protect data
- 145opportunistmake sure you are logged off and have secured passwords
- 146virustry deleting the virus or not downloading it in the first place and if its bad factory reset it with backups
- 147malwaremalicious software can be in an advert so be cautious when clicking on it
- 148phishingdo not press on links that are too good to be true
- 149accidental damagebackups on data
- 150hackersencryption to add more levels of security. password control
- 151data protection acta law that protects your data from other users unless permitted by primary user
- 152computer misuse acta law that makes using other peoples accounts without their permission illegal
- 153copyright, design acta law where if you copyright something it is yours and others can not use it without permission
- 154freedom of information actan act where you can have freedom to your own information and bae able to not worry about people taking it over
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- BTEC IT FlashCards sobre flash cards, criado por Kevin Wieczorkiewicz em 16-11-2021.
- Criado por
- Kevin Wieczorkiewicz
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