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Flashcards

Btec ICT Online services

Jordan Al-Hardan English 140 cards

Btec ICT Online services

Cards in this deck (140)

  1. 1Communication-Social networking: Snapchat, Instagram, etc
    -Electronic mail: Gmail, Outlook, Icloud etc
    -Instant messages: Imessage, whatsapp, messenger, discord etc.
    Pros- Easy for extended families and friends to keep in touch.
    Cons: Cyber bullying and trolls that send hurtful messages.
  2. 2Real time service-Train timetables
    -Traffic reports
    -Flight status updates
    -News services
    -Weather reports
    Pros: can save people from having trouble with what they have to do and also could struggle with time therefore, the internet is quicker.
    Cons: downtime can cause a lot of trouble.
  3. 3Commerce-Internet banking
    -Retail sales websites
    -Auction websites
    -Electro publishing
    Pros: very convenient and easy.
    Cons: Possible credit card fraud.
  4. 4Government-Online tax returns
    -E-Voting
    -Online applications
    Pros: Cuts the cost for the government because less people because less people needed to work.
    Cons: not everybody has access.
  5. 5Education-Online training websites
    -Online training services
    Pros: Users can work at their own pace.
    Cons: Must have online access.
  6. 6Entertainment-Online multi-user games
    -Online radio player
    Pros: Services can be accessed anywhere.
    Cons: Need broadband media for media services.
  7. 7Downloading-Music and film downloads
    - Software and games downloads
    -Software upgrade
    Pros: It's illegal and not piracy.
    Cons: Need fast internet to download large files.
  8. 8Business-Video conferencing
    - Collaboration working
    - Online business working
    Pros: Cuts and travel costs for staff.
    Cons: Staff need training.
  9. 9PayPerClick (affiliate model)-Every time a hyperlink is clicked they get paid
    - The host gets paid every time someone is sent to the advertisers website
    -The host displays an ad for another company
  10. 10Pop ups-These can appear when a new page is opened
    -These can appear when your mouse is hovering over a certain point
  11. 11Banners-Often, at the top of the screen so you can't miss them whereas other ads can be anywhere
  12. 12Email-Websites get your email and send you many ads to your inbox
    -This isn't classed as spam because you gave them your email
  13. 13Sponsored links-Companies pay so their links are at the top of the web browser
    -This is so they get more clicks and views on their website
  14. 14Benefits of ads-Many people will see your company
    -You can get paid for putting ads on your website
    -Companies get attention for them
  15. 15Why they can be annoying-Not everyone is happy and satisfied using cookies.
    -Unwanted malware is sometimes generated
    -Some ads play as soon as your page loads
  16. 16File compressionFile compression is when a file is squashed and made smaller. This is when a file goes from one file type to another and the quality gets downgraded slightly.
  17. 17IndexIt creates a store of all the repeated words and it is later use to reassemble the condense to the best quality.
  18. 18Algorithm-A method to reduce data.
    -An example is to cut all repeating words.
  19. 19Benefits-Less storage space
    - Faster upload
    -Faster download
  20. 20Advantage of online services-Can be accessed anywhere
    -Don't need to save things
    -Can be recovered easily
    -Automatic updates
  21. 21Disadvantages of online services-Need good and reliable internet
    -Not very reliable
    -Possibility of getting hacked
  22. 22Advantages of standalone services-You own it
    -Don't need internet to access it
    -Runs fast because it's on your hard drive
  23. 23Disadvantages of standalone services-Can only be accessed from your computer
    -Need to remember to save it otherwise it will be lost and cannot be recovered
  24. 24Backup and restore-This is to save your data to prevent you from losing it and also you can get any data that has been lost.
  25. 25Advantages of collaborative working-People can work online together even if they're in different places or countries so they don't need to travel therefore, they save money
    -Only need one version of a document which everybody can edit but if you wanted to you can make it so they can only view.
  26. 26The importance of version control and how it can be used-Records changes to a file over time so that you can recall specific versions
    -Keep everybody working on the latest version therefore, they have the best expierience and get to use that software to the best of their ability.
  27. 27Levels of access-This is so only certain people can access certain files
    -Staff can access areas depending on their role
    -Students and teachers see different parts of network
  28. 28File permission-File permission gives people limited access
    -This is so people can only do certain things: view, comment and edit
  29. 29Online community-Network of friends
    -Need members online at the same time
    -Others can interact at different times such as VLE
  30. 30Virtual world-A virtual would such as Second Life that would only exist online
    -A computer simulated virtual world where users can interact with each other
  31. 31Blog-A web log or online journal that is meant to be updated often
    -Journalists sharing stories or advertisement
  32. 32Micro-Blog-A website or app where short messages are exchanged : twitter.
  33. 33Chatroom-A place on the web where many users at the same time can communicate in real life times (live)
    - Usually people with shared interests
  34. 34Wiki-Sites where authorized users can logon to add or edit content: Wikipedia
    -Usually people with shared interests
  35. 35Podcast-Audio or video files that are usually published in instalments
    -Media channels sharing TV or radio shows or advertising
  36. 36Chat-Where people are online at the same time and post messages in "real time": Imessage. Snapchat or Instagram.
  37. 37Netiquette-Netiquette is a set of rules for users to acknowledge.
  38. 38Profile-Is an online user's presence on something such as social media
  39. 39Avatar-An avatar is an image to represent you online
  40. 40What is VoIP-A VoIP is a voice over internet protocol
    -This a method of a a real-time communication over the internet: Skype
  41. 41Advantages-Free way to make video calls over the internet
    -Available to connect anywhere with internet
    - Reduces travel costs
    -Easier and better collaboration
  42. 42Disadvantages-Relies on peoples internet so it can buffer or be slow
    - data being exchanged is a risk of security
    -Voice and video quality can be affected since it's being transmitted over the internet.
  43. 43Equipment Required- You will need many pieces of equipment:
    -Web cam
    -Microphone
    -A device to use
    -You could use a headset instead of a microphone and speakers
    -In addition, most of these pieces of hardware are now built in into modern devices
  44. 44Ubiquitous Computing Internet of Everything-Ubiquitous is where processors are built into everyday objects that are connected online
    -Satnavs are built into cars to direct the driver
    -Pacemakers are fitted to regulate a heartbeat
  45. 45RFID Chips-Radio frequency identification chips are used to track and identify for stock control
    -Some cap flaps only if the animal is wearing the correct RFID chip
    -Some fridges have these and if a tagged product is placed in the fridge it can automatically read the RFID
  46. 46Cloud computing-Cloud computing is where you use external servers instead of your hard drive
  47. 47Benefits of cloud computing-Saves money as you don't need to pay for them
    -You can do it anywhere with an internet connection
  48. 48Server-Runs special software to serve other computers
    -Different types include file, web, print and email servers
  49. 49Client-A computer/Device that uses services provided by a server
    -The computer you use to access the internet is a client
  50. 50Router-A device that routes data traffic through a network
    -They are intelligent and will try to find the best routes
  51. 51Backbone-A 'big' cable (often fibre optic) that connects a large number of devices in the 'core' of the internet.
  52. 52ISPInternet service provider
    -allows connection to the internet
    -can also provide additional services at a fee such as website hosting and tech support
    - can provide connection to one or many clients
  53. 53PoP-Point of presence
    -Is an access point to the internet
    - An ISP may have several PoPs to allow good connection to the internet
  54. 54NAP-Network access point
    Where different internets interconnect , such as your home network onto the internet
  55. 55Advantages of dial up connections-Can use existing telephone wires
    - Gives connection where broadband is not available
  56. 56Disadvantages of dial up connections- Older technology can give poor connection
    - Usually slower than other methods
    -Conversion between digital and analogue can cause errors
  57. 57Advantages of broadbandUsually better reception speed than dial up and wireless
  58. 58Disadvantages of broadband-Wired so has to be used at stationary device
    -Broadband is not available in rural areas
  59. 59Advantages of wireless-Not fixed to a stationary device
    -Can be used whenever wireless is available
  60. 60Disadvantages of wireless-Need to have wireless internet available
    -Can be less secure than wired
    -Tends to be slower than wired
  61. 61ISP connectionsISP connections
  62. 62ISPISP
  63. 63NAPNAP
  64. 64Bandwidth speedsBandwidth speeds
  65. 65HTTP-Hypertext transfer protocol
    -A set of rules that handle what we do on the web
    - Used to send and receive webpages and files on the internet
  66. 66HTTPS-Hypertext transfer protocol secure
    - Data on the web page is scrambled before sending it across the internet so if data was intercepted it would not be understood
    -Protects privacy against 'hackers'
  67. 67FTP-File transfer protocol
    - It's used to upload and download files from a server
    - Used by web developers to transfer files their web servers
  68. 68TCP-Transmission control protocol
    - Breaks into data packets
    - -Assembles the data again when they arrive
  69. 69IP-Internet protocol
    - Handles the routes of packets
    -That is addressing, sending and receiving packets over the net.
  70. 70World Wide Web layoutWorld Wide Web layout
  71. 71Hyperlinks-The web works because of hyper links
    -They connect web pages together
    -When clicked you are taken to a new web page
  72. 72Web Servers-Websites are stored here
    -When you access a web page through a browser, the page is temporarily downloaded onto your computer
    -Is it the web server's job to deliver the web page requested
  73. 73Browsers-Web pages are accessed through browsers
    -These are applications which allow a user to enter a URL and view a webpage
    -Your browser reads a HTML code and displays the page.
  74. 74URL Uniform Resource LocatorsURL Uniform Resource Locators
  75. 75Search enginesSearch engines
  76. 76Client side-The client side where someone is on a client a device).
  77. 77Search engine-Search engines are special websites that allow users to find data on the internet
    -Examples including Bing, Google and Yahoo
  78. 78Server slide- The server slide is where the web servers receive appropriate information from the client side
  79. 79Spider/web crawler-Search engines use automated programs called web crawlers which look for new and updated pages and log them to the search engines database called the index
  80. 80Index- The search engine searches its index, which is its database of webpages
  81. 81Database-The database is a lot of web pages that is ordered in popularity for security that viewers are getting the best experience
  82. 82Sponsored links results-This is when a company pays the search engine money therefore it can be at the top or near the top of the results
  83. 83Adverts-A search engine such as Google will have adverts specifically specialised for you and your needs
    -It will only have relevance to your search therefore you will not get spammed with unnecessary things and can maintain a good experience.
  84. 84Popularity-The results of the question asked by the client side will be ordered by popularity by the search engine
  85. 85SMTP-Simple mail transfer protocol
    -It pushes outgoing email to a server
    -If ever a problem sending, them SMTP will keep trying until its sent.
  86. 86IMAP-Internet message access protocol
    -Lets you access your email on a server
    - When logon, you pull email from server
    -So you can access anytime and anywhere
  87. 87POP3-Post office protocol 3
    - Pop originally came before webmail when people used 'email client software' eg MS Outlook
    -You downloaded emails from the server
    -Then emails could be deleted from the server
  88. 88Webmail-Can access email on many devices
    - email backed up
    -You must have net connection
    -Slow service
  89. 89Email Client-Can access them, even if not online
    -Client software has more features
    -Emails lost if computer crashes
  90. 90Data exchangeData exchange
  91. 91Packet switching-The process of data being broken into packets before being sent through a network and then re-assembled at the other end.
  92. 92Advantages of packet switching-Packets chose different routes so traffic flow is efficient
    -Big files can be sent but don't clog network
    -Give security benefit because if intercepted, the hacker will only have one part of the file
  93. 93Disadvantages of packet switching-If one or more packets are lost or corrupted during transmission, the whole file will not be recieved correctly.
  94. 94advantages of packet switching-Packets chose different routes so traffic flow is efficient
    -Big files can be sent but don't clog network
    -Give security benefit because if intercepted, the hacker will only have one part of the file
  95. 95Disadvantages of packet switching- If one or more packets are lost or corrupted during transmission, the whole file will not be received correctly.
  96. 96What are codecs-Converts analogue data to digital data by decoding and coding data.
  97. 97Simplex-Signals in one direction at the same time
    -E.g Phone
  98. 98Full Duplex-Signals go in both directions at the same time
    -E.g Phone
  99. 99Half Duplex-Signals go in both directions but not at the same time
    -E.g A Pc and printer
  100. 100Serial Transmission-Bits of data are transferred one at a time over a cable
    -Good over large distances
    -Has to be broken into individual bits
  101. 101Parallel Transmission-Bits of data are transferred simultaneously
  102. 102Unshielded Twisted Pair/Shielded Twisted Pair-Contains pairs of copper wires twisted together
    -Use for LANs
    -Cheaper than other methods
    -Reliable
    -The STP has plastic coating to protect from other signals
    -Slow
    -Low capacity
    -Used over short distances
    -Data can be interfered with if near another digital device
  103. 103Coaxial cable-Si solid copper wire with thick shielding
    -Reliable
    -Slow
    -Low capacity
    -Used over short distances
    -Thick and physically inflexible
    -Susceptible to noise
  104. 104Fibre optics-Strands of glass carry data as light
    -Used for backbone of network
    -Fast
    Used over long distances
    -Little inference
    -Used for backbone of network
  105. 105Infrared- Use infrared light to transmit data
    - That's very high frequency light
    -Reliable
    -Short range
    -Devices must be in line of sight
    -Can suffer from interference
  106. 106Bluetooth-Used waves with short wave lengths to transmit data
    -Good for medium distances
    -Can suffer from interference from other devices
    -E.g a microwave oven that is near to a computer device
  107. 107Satellite-Uses satellite to relay data between points on Earth
    -E.g GPS
    -Good for very long distances
    -Very expensive
  108. 108NIC & NAP-Devices using wireless networking need a MIC
    -Network internet card
    -Network access point
    -It is the hardware for receiving wireless signals
    -It is built-into modern devices e.g tablets and phones
    -The NIC connects to a NAP
    -Lots of places offer NAPs, such as cafes and libraries
  109. 109Client and server side processor-Server-side processing uses the wen server to process web page data
    -Server-side processing is where the inactivity on a web page is processed on the web server
    -Client side processing uses the client's computer to process web page data in data exchange
    -Client-side processing is where the interactivity on a web page is downloaded and processed using the clients processor.
  110. 110Examples of client and server side processing-Client side - A rollover image that changes when a user hovers over it.
    -Server side- A form completed online then submitted to the server side to be processed and stored.
  111. 111Advantages of client sideClient:
    -High speeds
    -Good security
    Server slide:
    -Very efficient
    - Browser independent
    -High speeds
  112. 112DisadvantagesClient side:
    -Browser- specific
    -Reliant on computer speed
    server:
    -Risk of security
    -Possible overloads
  113. 113Database-A structured collection of data
  114. 114Table-Stores a set of data
    -E.g details of all the students in school
  115. 115Field-A field are the columns in a table
    -E.g forenames, surname, gender and date of birth
  116. 116Record-A record is one row that stores data about one single item
    E.g a students details
  117. 117Primary key-The primary key is a special field with a unique identifier
    -E.g a student ID
  118. 118-Foreign key-Its purpose is to link to the supplier table
  119. 119Relationship-Most databases need more than one table to store all the data
    -So the tables needs to be linked or related to create a relational database.
  120. 120Data types and usesText-Any kind of characters including letters and numbers
    E.g LA6 2HJ
    Numeric-Number values
    E.g 38.9
    Data/Time- Dates and times
    E.g 18/01/22
    Boolean- One of two values. E.g yes/no or true/ false.
  121. 121Online and Local Database-Online means a database that could be accessed around the world
    -Local means a database held inside an network to keep it secure.
  122. 122Features-Local databases are well protected
    -Online databases can be accessed 'on the move' via WI-FI.
  123. 123DBMS-Database Management System
    -A software that allows you to create and use your own database
    -Creates tables and fields and allows you search and sort data
    -Handles security to prevent un-authorised access
    -Can also allow for different level;s of access for different users.
  124. 124SQL-Is the language used by DBMS to create and search a database
    -Has a data definition language to set up the tables
    -Has a data manipulation for updates and search queries.
  125. 125Present Check-Check to see if data has been entered and not left blank
  126. 126Range check-Check values are in sensible range
    -E.g effort grades between 1 and 5.
  127. 127Format check-Check that data is in required format
    -E.g date is DD/MM/YY.
  128. 128Check Digit-Use digits in a code to check the data is right
    -E.g a barcode
  129. 129Threats To DataThreats To Data
  130. 130How To Protect DataHow To Protect Data
  131. 131Opportunist-Make sure your logged off every time you leave your PC
  132. 132Virus-Do not click on any unsecure websites
  133. 133Malware-Don not click on any unsecure websites
  134. 134Phishing-Do not click on any links that seem 'to good to be true'
  135. 135Accidental damage-Put out any candles that are near to your PC
    -Make sure you have back up data that you can recover
  136. 136Hackers-Keep all of your personal information to yourself
  137. 137Data protection Act-Forces organisations to the protect the data they store about people
    -Lay down 8 principals
    -Can be fined if you don't follow them
  138. 138Computer Protection Act-Targets hackers and virus-makers
    -Focused on 'un-authorised access'
    -Starts with access, then intention to do more harm and then alerting data
  139. 139Copyright, Designs and patents Act-Aimed at preventing piracy
    -Protects rights of the makers of software, photos, music and films
    -So use without permission is illegal
  140. 140Freedom of information Act-Gives people the right to see data stored about them by public sector organisations
    -E.g councils and goverment
    -Anyone can make a 'FOI' request.

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Flashcards on Btec ICT Online services, created by Jordan Al-Hardan on 16/11/2021.
Created by
Jordan Al-Hardan · Nov 2021
Updated
Jan 20, 2022
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