GoConqr has a new look! Let us know what you think.

Sign up free

Flashcards

Online services flashcards

Madison Osorio-Mojica IT BTEC English 150 cards

Online services flashcards

Cards in this deck (150)

  1. 1Online servicesThe different types of online services and examples
  2. 2CommunicationServices that let people stay in touch
    Examples: Email, instant messaging, social media, blogs (diary), vlogs (videos), and video networking (facetime).
    Pros: Allow extended families to stay in contact.
    Cons: Cyberbullying and trolls
  3. 3Real Time servicesServices that provide up to date information
    Examples: Train timetables, traffic reports, flight updates, weather reports, and news services.
    Pros: Save people time/trouble as they know what's happening
    Cons: Downtime damages public image.
  4. 4CommerceCommerce = business
    Services that involve money in some way
    Examples: Online shopping, auction sites, online banking, and publishing (e-books).
    Pros: Convenience of home delivery for online shopping.
    Cons: Security - for example, credit card fraud.
  5. 5GovernmentThings that involve official public services
    Examples: paying personal taxes online,
    paying car taxes, paying student loans,
    E-voting, and online applications.
    Pros: Cuts cost of government (reduces the need for processing paperwork)
    Cons: Not everyone has online access
  6. 6EntertainmentServices for leisure and fun
    Examples: Catch-up TV, radio players, streaming music, and streaming videos on demand.
    Pros: Services can be accessed on the move.
    Cons: Need broadband for media services
  7. 7DownloadServices that include LEGAL downloading
    Examples: downloading music (iTunes), games (app store), and movies.
    Pros: Legal and no need to use DVD's (waiting for the post)
    Cons: Need fast internet to download large files.
  8. 8BusinessCompanies using websites to increase efficiency and save money.
    Examples: Using skype or using intranets ( special internal websites)
    Pros: Cuts travel costs for staff and a safe, secure place to share info.
    Cons: Staff need training
  9. 9EducationServices that involve workplace training and education for schools
    Examples: Online training for construction trades or online learning (eg using bbc bitesize)
    Pros: Users can work online at their own pace.
    Cons: Must have internet access.
  10. 10VLE's (virtual learning environments)Services that provide virtual classrooms for students and teachers.
    Examples: Google classroom is a VLE that can have many classes for each student.
    Pros: Upload work for feedback
    Cons: Set up/ training costs
  11. 11SAAS (software as a service)Services that let you use applications online so you only pay for software on demand
  12. 12Online advertisingThe different ways to advertise online
  13. 13Pay Per Click (PPC) Affiliate modelWhen a host website displays an ad for another company.
    Every time a visitor clicks on the ad, the company has to pay the host company a small amount. This is Pay Per Click.
    It's also called affiliate model as the companies act as partners.
  14. 14Sponsored linksThis is when companies pay the browsing companies (eg google) to have their link listed first in the search engine. Therefore, people are more likely to visit their websites as their name comes up first.
  15. 15BannersBanners go at the top or sides of the pages so it's hard to miss them. Sometimes visitors accidentally tap on banners, but this is good for the company as it gives them an opportunity to grasp their interest
  16. 16Pop upsThese appear at random and therefore cannot be ignored or prevented. Sometimes there is a timer on the ad before you can get it off your screen.
  17. 17File compressionFile compression is squeezing data to reduce file sizes for storage and sending.
  18. 18The role of the indexThe index is used to store all of the cut words after using an algorithm.
  19. 19What's an algorithm?An algorithm is a method to reduce the data of a file. An algorithm cuts all the repeating words.
  20. 20The advantages of file compression-It reduces file sizes so memory space is saved.
    -Smaller file sizes means faster downloads.
    -Faster uploads
  21. 21Advantages of online software- Can be accessed anywhere
    -Do not need to remember to save
    -Can be recovered easily
  22. 22disadvantages of online software-Not very reliable
    -Not very secure (could get hacked)
    -Need good internet connection
  23. 23Advantages of stand alone software-You own it
    -You can access whenever as it doesn't require internet
    -Runs faster
  24. 24Disadvantages of stand alone software-Need to remember to save
    - Can only be accessed from your computer
  25. 25Backup and restoreHaving a back up online means a copy of your files are stored on web servers. This means you can restore the files if there's a problem.
  26. 26Advantages of Collaborative working-Staff can collaborate online, even in different countries etc.
    -People don't need to travel as much, saving money and helping the environment.
    -You only need one version of the document which everyone can edit.
  27. 27The importance of version control and how it can be usedAn example of version control is that using standalone software you have to save your work after every time you change something making new versions each time. It is used to make sure that there is always an up to date record of the last
  28. 28Levels of accessRestrictions are set at logon:
    -Staff can access areas depending on their role.
    -Students and teachers can see different parts of networks.
  29. 29File permissionThese are settings that control what users can do to a file.
    -Read: View only
    -Read/Write: View and edit
    Full control: View, edit and delete
    (Classroom: comment only as well)
  30. 30What are online communities?Online communities are a network of friends that only exists online
    It's a way to connect people with similar interests
  31. 31Virtual worldPeople can interact at different times such as a VLE
    People can interact at the same time, for example online gaming.
  32. 32BlogA web log or online journal or a video log, that is meant to be updated often.
    People who blog include: businesses promoting news/product info, fans, creative professionals, and journalists.
  33. 33MicroblogA website or app where short messages are exchanged (because the number of characters per message is limited)
    People who microblog include: friends sharing updates, professionals linking with colleagues about work, and celebs in touch with fans.
  34. 34WikisSites where authorized users can logon to add or edit content
    People who use wikis: teams who want to collaborate on a pool of information and people with a shared hobby or interest.
  35. 35ChatroomsA place on the web where many users online at the same time can communicate 'live'
    People who use chatrooms: people with shared interests and professionals who work in the same industry
  36. 36PodcastAudio or video files that are normally published in instalments
    People who use podcasts: Media channels sharing TV and radio shows, musicians, comedians, and businesses for promotion
  37. 37ChatChats are instant messaging where people are online at the same time and post messages in real time 'live'.
    Businesses offering online support to customers and people on social networks.
  38. 38What is a netiquette?A netiquette is a set of rules for users online. (Etiquette= code for behavior).
  39. 39ProfileA profile is a user's online presence, such as on social media. People can decide what to show and how much is true.
  40. 40AvatarAn avatar is an image to represent you.
  41. 41What is VoIP?VoIP stands for 'voice over internet protocol. It is a method of real time communication over the internet (eg skype). So audio and video data is transmitted between computers.
  42. 42Advantages-Uses internet only so no additional costs
    -Able to connect anywhere
    -Reduces travel costs, staff can video conference rather than flying
    - Better for collaboration as you can also show on screen documents.
  43. 43Disadvantages-Relies on quality of internet connection so can be slow, buffer, or cut off.
    -Data exchanged online is at risk of security threats, eg hackers, which is especially harmful for people working with confidential information.
    -Voice quality can be affected.
  44. 44Equipment requiredYou will require certain pieces of equipment such as :
    - a web cam
    -microphone
    -speakers
    However, you can use a headset instead of the mic and speakers.
    Nowadays, most of these are already built in therefore , you're very unlikely to have to purchase these equipment individually.
  45. 45The Internet of Everything (ubiquitous computing)Ubiquitous computing is where processors are built into everyday objects that are connected online
    Examples:
    - Satnavs are built into cars to direct the driver
    -Pacemakers are fitted to regulate a heartbeat
  46. 46RFID chips (Radio Frequency Identification Chips)RFID's are a way to embed processors into everyday objects
    They are used to identify & track products for stock control
    They are like a barcode, however they don't need to be scanned.
  47. 47Cloud ComputingCloud computing is where you use external servers instead of your hard drive
    Some of the well - known hosting companies are: Dropbox, Google & Microsoft
    Users can access software, data and storage from the hosting company
  48. 48Benefits of cloud computingCosts- You only have to pay if you use an excessive amount of storage, otherwise it's completely free.
    Anytime, Anywhere- You can access your files from anywhere where you have an internet connection
  49. 49Drawbacks of cloud computingReliability- A poor host service means the service could be slow or crash
    Security- You have to trust your hosting company to keep your data and storage safe.
  50. 50NAP (Network Access Point)NAP (Network Access Point)
  51. 51ISP (Internet Service Providers)ISP (Internet Service Providers)
  52. 52Server-Runs special software to serve other computers
    -Different types include: file, print, web and email servers
  53. 53ClientA computer/ device that uses provided by a server
    The computer you use to access the internet is a client
  54. 54RouterA device that routes data through a network
    They are intelligent and will try to find the best routes
  55. 55World wide web layoutWorld wide web layout
  56. 56HyperlinksThe web works because of hyperlinks.
    They connect web pages together.
    When a hyperlink is clicked, a user is taken to another page on the site, or another website.
  57. 57Web serversWebsites are stored on web servers.
    When you access a webpage through a browser, the page is temporarily downloaded onto your computer.
    It is the web servers job to deliver the web page requested.
  58. 58BrowserWeb pages are accessed through browsers.
    These are applications that allow a user to enter a URL and view a webpage.
    Your browser reads the HTML code and displays the page.
  59. 59URL layoutURL layout
  60. 60ISP Internet Service ProvidersISP Internet Service Providers
  61. 61Search engineSearch engine
  62. 62Client SideThe client side is where there is search engines downloaded onto the software.
    This is where someone is on a client (a device ) searching key words.
  63. 63Server SideOn the server side the keywords are stored in the index.
    The index is constantly updated by web crawlers.
    This is where information is received from the database.
  64. 64Search engineSearch engines are special websites that allow users to find data on the internet.
  65. 65Spider/ web crawlersWeb crawlers are used to find the information based on the key words
    They constantly update the index
  66. 66IndexThe index is where the keywords are stored
    They are constantly updated by web crawlers to find the most suitable results
  67. 67DatabaseThe database is the part of the index that orders key words/ results in order of popularity to ensure the results received by the client are the most appropriate.
  68. 68Sponsored link resultsThis is when a business pays to have their company website come up as the first result for certain keywords. This makes money for the company who own the search engine and the businesses site is more likely to be visited.
  69. 69AdvertsA search engine, such as Google, will have adverts specific to your search. However, sometimes companies will pay these search engines to display their ads on the web page regardless of what you searched.
  70. 70PopularityThe results that appear on the web browser will be in order of popularity. This is sorted in the database to ensure the top results are the most relevant.
  71. 71Store and forwardStore and forward is when emails are kept on servers by the company (eg - gmail) until the recipient views them
  72. 72Address book / contact groupYou can use the address books to send an email to lots of people simultaneously.
    These also store contacts.
  73. 73CC-Carbon copy
    This is when you send an email to multiple people and they can all see each others email addresses.
  74. 74BCC-Blind carbon copy
    This is when you send a copy of an email to multiple people but they cannot see each others email addresses.
  75. 75Benefits of using email- Attachments- You can attach multiple files, such as images or documents.
    -Copy- you can send copies of emails to multiple people.
    -Contacts- You can easily store contacts
    -Delivery speed- Delivered pretty much instantly.
  76. 76Drawbacks of using email.Junk mail/spam- may be contacted by random websites getting random unwanted mail.
    Phishing
    Viruses- can harm your computer or data.
    Time delay
    No access
  77. 77SMTP Simple Mail Transfer ProtocolPushes outgoing email to server
    If ever a problem sending them, SMTP will keep the email and keep trying to send it until it's sent.
  78. 78IMAP Internet Message Access ProtocolLets you access your email on server
    When you logon, you pull the email from the server
    Can access anytime anywhere.
  79. 79POP3 Post Office Protocol 3Originally came before webmail when people used 'email client software'
    You download emails from the server
    Emails can then be deleted from the server
  80. 80WebmailPositives:
    All your messages stay on the server
    Can access the email on many devices
    Email back up
    Negatives:
    You need a network connection
    Slow service
  81. 81Email clientPositives :
    Can access them, even if not online
    Client software has more features
    Negatives:
    Emails lost if computer crashes
  82. 82Packet SwitchingPacket switching is the process of data being broken into 'packets' before being sent through a network and then re-assembled at the other end.
  83. 83Advantages of packet switching-Packets take different routes so traffic flow is efficient
    -Even if one packet is intersected, the whole file will not be obtained.
    - Big files can still be sent without clogging network.
  84. 84Disadvantages-If one or more packets are lost or corrupted during transmission, the whole file will not be received correctly.
    -Lots of RAM (random access memory) is required.
  85. 85What are codecs?Codecs are little pieces of software that convert analogue data to digital data by decoding and coding the data.
    This speeds up the transmission time.
  86. 86SimplexOne way
    Signals go in one direction at a time
    Eg- from remote to tv or projector
  87. 87Full duplexTwo way
    Signals go in both directions at the same time
    Eg- talking over the phone
  88. 88Half duplexTake turns
    Signals go in both directions but not simultaneous (one at a time)
    Eg- radio transmissions/ walkie talkies
  89. 89Serial transmissions-Bits of data are transferred one at a time over a wire
  90. 90Parallel transmissions-Bits of data are transferred simultaneously
    -A whole byte can be transferred at the same time
  91. 91Serial benefits and limitationsBenefits:
    Good over large distances
    Limitations:
    Complex because data needs to be broken down into individual bits
  92. 92Parallel benefits and limitationsBenefits:
    Faster because more bits transferred per second
    Limitations:
    Only for short distances, eg 5-10 meters
  93. 93UTP/STP Unshielded Twisted Pair/ Shielded Twisted PairThese contain pairs of copper wires twisted together
    They are used for LAN'S
  94. 94Advantages of UTP/STP-Cheaper than other methods
    -Reliable
    -Under plastic coating, the STP cable has a protective layer around the copper wires to protect the data signal from interference.
  95. 95Disadvantages of UTP/STP-Slow
    -Low capacity
    -Used over short distances
    -Susceptible to interference meaning data can be interfered with if near another digital device
  96. 96Coaxial cableA solid copper wire with thick shielding
    Used to connect TV with aerial
  97. 97Advantages and disadvantages of coaxial cableAdvantages:
    -Reliable
    Disadvantages:
    -Slow
    -Low capacity
    -Used over short distances
    -Thick and physically inflexible
    -Susceptible to noise
  98. 98Fiber opticsStrands of glass that carry data as light
    Used for backbone of network
  99. 99Advantages and disadvantage of fiber opticsAdvantages:
    -Fast
    -Used over long distances
    -Little interference
    Disadvantages:
    -Used for backbone of network
  100. 100Infrared-Uses infrared light to transmit data
    -Very high frequency light
    -Used for devices like tv remotes to tv etc.
  101. 101Advantages and disadvantagesAdvantages:
    -Reliable
    Disadvantages:
    -Short range
    -Devices must be in line of sight
    -Can suffer from interference
  102. 102Microwaves-Uses waves with short wavelength to transmit data
    -Used for Bluetooth
  103. 103Advantages and disadvantagesAdvantages :
    -Good for medium distances
    Disadvantages:
    -Can suffer interference from other devices
    Eg- a microwave oven near a computer device
  104. 104Satellite communications-Uses geostationary and geosynchronous satellites in space to relay data between points on earth.
    Eg- GPS
    Used for worldwide communication and weather updates
  105. 105Advantages and disadvantagesAdvantage:
    -Very good for use over long distances
    Disadvantage:
    -Very expensive
    (compared to infrared and microwave)
  106. 106Network Interface Card (NIC) & Network access point (NAP)-Devices using wireless networking needing a NIC.
    -It's the hardware for receiving wireless signals
    -It's built into modern devices (eg- iPhone, tablets)
    -The NIC connects to the NAP.
    -Lots of places offer NAP's such as cafes and library.
  107. 107Client side processingClient side processing uses the client's computer to process web page data in data exchange.
    Where the interactivity on a web page is downloaded and processed using the client's processor.
  108. 108Server side processingServer side processing uses the web server to process web page data.
    Where the interactivity on a web page is processed on the web server.
  109. 109Examples of Client side and server side processingClient side:
    - An example is a rollover imagine on a web page which changes when a user hovers their mouse over it.
    Server side:
    - An example is a form completed online which is filled in by the user then submitted to the server where the results are processed and stored.
  110. 110Advantages of client side processingSpeed- faster because the data is on the client and does not need to move across the internet.
    Security- data cannot be intercepted on the client in the way it can when it moves across the internet
  111. 111Disadvantages of client side processingBrowser specific - different browsers process scripts in different ways, therefore the web page owner cannot be sure how their web page will appear.
    Computer speed- the web page owner is reliant on the processor speed of the client's computer, so if that is slow then the processing will be slow.
  112. 112Advantages of server side processingEfficiency- the information to process does not need to be downloaded to the client's computer
    Browser independent- it does not matter which browser the user has as the work is done separately on the server
    Speed- the processing occurs on the web server, which is likely to be more powerful than a client's computer.
  113. 113Disadvantages of server side processingSecurity- when data is transferred across the internet it is more at risk of security threats.
    Overloading - if a lot of users are asking the web server to process data, it could overload the server and cause it to run slowly or crash.
  114. 114DatabaseA structured collection of data
  115. 115TableStores a set of data
    Eg- details of all students in a school
  116. 116FieldThe columns in a table
    Eg- forename, surname, gender, DOB
  117. 117RecordOne row that stores data about a single item
    Eg- a student's details
  118. 118Primary keyA special field with a unique identifier
    Eg- a student's ID
  119. 119Foreign keyIt's purpose is to link to the supplier table
  120. 120RelationshipMost data bases need more than one table to store all the data
    So, the databases need to be linked/ related to create a relational database.
  121. 121Data typesSay what kind of data is going to be stored in a field.
  122. 122TextAny kind of characters, including letters and numbers
    Eg- LA6 2HJ
  123. 123NumericNumerical values
    Eg- 1.5
  124. 124Date/TimeDate and times
    Eg- 01/04/2014
    12:45
  125. 125Logical (Boolean)One of two values , such as Yes/ No or True/ False
    Eg- Yes
  126. 126Local and Online DatabaseLocal:
    A database held inside a network to keep it secure
    Online:
    A database that can be accessed around the world.
  127. 127Features of online and local databasedd
  128. 128DBMS (Database Management System)-A DBMS is a software that allows you to create & use your own database
    -It creates tables and fields and allows you to search and sort data
    -It handles security to prevent un-authorized access
    - It can also allow for different levels of access for different users
  129. 129SQL (Structured query language)-SQL is the language used by a DBMS to actually create & search a database
    -It has a data definition language (DDL) to set up tables
    -It also has data manipulation language (DML) for updates and search queries.
  130. 130Presence checkEnsures data is entered into a field and not left blank
  131. 131Range checkUsed to ensure data falls between a set range
  132. 132Format checkUsed to ensure data is in the correct format
  133. 133Check digitUsed to ensure the data received is the same as the data transmits
  134. 134HTML tags= Make a heading on a webpage
    = Make a paragraph of text
    = Make text bold
  135. 135HTML tags= Make text italic
    = Underline text
    =Create a line break
  136. 136HTML tags= Insert an image
    = Create a hyperlink
  137. 137Threats to dataThreats to data
  138. 138Ways to protect dataWays to protect data
  139. 139Opportunist threatNetwork can be breached by people who take random opportunity
    - Physical barriers: lock doors
    -Password security: Log off when leaving the room
  140. 140VirusMalicious programs designed to replicate
    - Keep anti virus software up to date
    -Use a VPN
  141. 141MalwareOther malicious programs
    - Don't click on unknown websites
  142. 142PhishingHackers use fake links to get you to enter your details
    -Do not click on links that seem too good to be true
  143. 143Accidental damageFloods, fires, dropping the device, spillages,
    natural disasters, untrained users
    -Make sure you back up data so it can be recovered
    -Take safety precautions to prevent fires.
  144. 144HackersPeople crack the coding behind your passwords to gain unauthorized access to your data
    - Keep all of your personal information to yourself
    -Use different passwords for each app.
  145. 145Data Protection ActData must be accurate, up to date, safe and secure.
    -Forces organizations to protect the data they store about people
    -Lays down the 8 principles
    -Can be fined if not followed
  146. 146Computer Misuse ActUnauthorized access, UA with intent, Unauthorized altering data
    -Targets hackers and virus makers
    - Focused on unauthorized access
    -Starts with access, then intention to do harm & then altering data
  147. 147Copyrights, Designs, and Patents Act27% of software in use is illegal in the UK
    -Aimed at preventing piracy
    -Protects rights of the makers of software, photos, music, films etc
    -So use without permission is illegal
  148. 148Freedom of Information ActYou have the right to access information stored about you by public organizations.
    -Gives people the right to see data stored about them by public sector organizations - eg government, councils
    -Anyone can make a FOI request
  149. 149HotspotAnother term for hyperlink
  150. 150Two HTML tags that can be used to create a table areand

Information

Description
BTEC IT Flashcards on Online services flashcards , created by Madison Osorio-Mojica on 16/11/2021.
Views
1
Rating

Feedback

What is it about?

What do you think of the new look?

How do you like it?