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Riley Whittington Inglês 94 flashcards

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Flashcards do conjunto (94)

  1. 1Dial up internet.Advantages: Can use telephone wires saving space, gives connection where broadband is not available.
    Disadvantages: Older technology can give poor internet speeds, usually slower than other methods and conversions between digital and analogue can cause errors.
  2. 2Broadband internet.Advantages: Better reception and in general connections speeds than dial up.
    Disadvantages: Wired, so has to be used on a stationary commuter, broadband is not available in many rural areas.
  3. 3Wireless internet.Advantages: Not fixed to a stationary computer, can be used whenever wireless internet is available.
    Disadvantages: Needs to have a wireless internet available, Can be less secure than wired, Tends to be slower than wired.
  4. 4Bandwidth.How much space there is to carry digitally.
  5. 5Bandwidth Table.Bandwidth Table.
  6. 6Transmission Protocol.Allows files to be transferred between 2 computing systems.
  7. 7Internet Protocol.Handling the routing of packets that's addressing sending receiving packets, that's sending and handling data over the net.
  8. 8File transfer ProtocolProtocol which allows a device to upload files onto sites and other pages.
  9. 9HTTPSSecure Hyper Text Transfer Protocol.
  10. 10FTPFile Transfer Protocol.
  11. 11HTTPHyper Text Transfer Protocol
  12. 12Communication.Services that keep you in touch with friends, family and colleges,
  13. 13Real time information.Services that provide up to to date information.
  14. 14EntertainmentMostly online services such as Xbox Live, Playstation, Switch Online and Steam.
    But also services like Youtube.
  15. 15Client SideUser on any device with a internet connection.
  16. 16Search EngineSoftware which is used to access with web (Bing, Yahoo and google)
  17. 17Spider/Web CrawlerA software that collects data from all over the internet.
  18. 18Server SideWhere all the websites a retrieved by the spider/crawler.
  19. 19IndexWhat a web crawler stores relevant web pages.
  20. 20DataBasewhere all the web pages are stored.
  21. 21Sponsored Link ResultsPromotional pages that are related to the searched topic, usually comes up first.
  22. 22AdvertsPromotional content.
  23. 23PopularityThe most popular sites will be shown at the very top in front of the other ones.
  24. 24Search Engine DiagramSearch Engine Diagram
  25. 25Store and forwardEmail are stored on a server then forwarded to the receiver.
  26. 26Address book/ contact groupA list of people that you email or communicate with frequently.
  27. 27CCCarbon Copy. More than 1 user receives the same email. (Essentially starting a Email group)
  28. 28BCCBlind carbon copy. Same as carbon copy but nobody knows who else is in the group.
  29. 29SMTPSimple mail transfer protocol. Pushes out going emails to a server.
  30. 30IMAPInternet Message Assess Protocol. Lets you access your email through the server.
  31. 31POP3Post Office Protocol. Download Email from the server.(Came out before Web server)
  32. 32WebmailWhen Emails are exclusively on a server.
  33. 33Email Diagram.Email Diagram.
  34. 34Description of packet switchingPacket switching is the process of data being broken into "Packets" before sent through a net work and then re-assembled at the other end.
  35. 35Advantages of packet switchesPackets chose different routes so traffic flow efficient. Big files can still be sent but don't
  36. 36Disadvantages of Packet SwitchingIf one or more packets are lost or corrupted during sending the whole file will be corrupted.
  37. 37Simplex With ExampleTv's and remotes are a example of Simplex because the remote doesn't get orders from the Tv
  38. 38Simplex With A AdvantageSimplex only sends the connection one way.
  39. 39Half Duplex With A ExampleTwo phones trying to call each other would be Half Duplex because signals goes both directions
  40. 40Half Duplex with a ExampleBoth go in the same directions as the same time.
  41. 41Full Duplex with a ExampleA printer and Pc would be a example of a full duplex because they take turns sending each other signals.
  42. 42Serial and Parallel Transmission descriptionBits of data being transferred over a wire, while Parallel is simultaneously going at once.
  43. 43Benefit and limitation of serial and ParallelSerial limitation of wire is complex because its broken into small amounts of data.
    Parallel is only for shorter distances E.g 5m.
  44. 44UTP (unshielded twisted pair)UTP (unshielded twisted pair)
  45. 45STP (shielded twisted pair)STP (shielded twisted pair)
  46. 46UTP/STP BenefitsUTP doesn't twist and its cheaper and more reliable.
  47. 47UTP/STPSlow, low capacity, used over a short distances, makes noise which means data can be interfered with.
  48. 48Coaxial cable. Is solid copper cable with a thick shielding that connects to TV'sCoaxial cable. Is solid copper cable with a thick shielding that connects to TV's
  49. 49Coaxial Cable Benefits.Good data transmission over short data.
    Cheap to make.
    Cheap to install.
    Easy to modify.
    Good Bandwidth.
  50. 50Coaxial Cable DrawbacksSlow, low power and can be only used over short distance.
  51. 51Fiber Optic CableFiber Optic Cable
  52. 52Fiber Optic benefitsFast, used in all distances.
  53. 53Fiber Optic DrawbacksToo expensive for most companies and other establishments to have and is also complex to install.
  54. 54InfraredInfrared
  55. 55Infrared BenefitsReliable.
  56. 56Infrared DrawbackShort Range device and must be in line of sight.
  57. 57Bluetooth MircowavesUses short wave lengths to transmit data.
  58. 58Benefits of Bluetooth MicrowavesGood for long distance
  59. 59DrawbackCan suffer from interference from
  60. 60BluetoothWireless connection for mouses, keyboards, controllers, earphones and head phones.
  61. 61SatellitesUses in space to relay data.
  62. 62Network interface card NICIts the hardware for receiving data on devices.
  63. 63Network access point NAP.it sends wireless signals to the NIC
  64. 64HTML commandshttps://www.thuto.org/ubh/web/html/tags1.htm
  65. 65Server Side ProcessingServer Side Processing
  66. 66Client sideClient side
  67. 67Advantages of Client sideProcessing is faster on the client because the data doesn't have to travel back across the internet and back.
    Data cannot be intercepted on the client in the same way
  68. 68Disadvantages of Client side.Different browsers use a different script so its not always compatible.
    The web developers is relying on the speed of the client.
  69. 69Advantages of Server sideServer are powerful computers, so a Server side computer is far more powerful than a client side computer.
    No browsers involved. Efficiency, all is on the server so need to wait for downloads etc.
  70. 70Disadvantages of Server sideSecurity, its sent back and forth the server so it has more of a chance of getting a security threat.
    If a large number of users are trying to get data then it can overload a server.
  71. 71Database types of relationshipsDatabase types of relationships
  72. 72DatabaseA structured collection of data.
  73. 73TableA table sets a collection of data e.g details of all the students.
  74. 74A RecordOne of the row that stores data about a single item e.g student details.
  75. 75A FieldAre the columns in a table e.g forename, surname, gender, date of birth.
  76. 76Primary KeyIs a special filed with a unique identifier e.g a student id
  77. 77Foreign KeyThe purpose is to link the supplier to the table.
  78. 78Date/timed
  79. 79Booleand
  80. 80Online DataBaseA database that is stored online, this is accessible by the internet.
    Features
    Can store a larger amount of database
    Can be accessed anywhere with a internet connection
  81. 81Local DatabaseA database that is stored locally. Used for smaller amounts of database.
    Features
    Stores smaller amounts of data
    Harder to break into (More security)
  82. 82Database management system (DBMS)Is system software for creating and managing databases.
  83. 83Structured Query Language (SQL)The language used to create database. It has a data definition Language (DDL) to set up the tables, and a data manipulation language (DML) to update and search queries.
  84. 84Threat: OpportunistsPhysical Barrier
  85. 85Threat: VirusProtection:
    -Anti Virus software
    -Background/Recovery
    -Encryption
  86. 86Threat: PhishingProtection:
    Common Sense
    Personal Privacy settings.
  87. 87Threat: HackersProtection:
  88. 88Copyright, Designs and Patents act 1988.Protects creators of original works.
  89. 89Computer Misuse Act 1990Introduced to protect from hackers and malicious use of viruses.
  90. 90Data Protection Act 1998Provides 8 principles that govern the way data about individuals is stored and used.
  91. 91Freedom information of 2000Provides individual the right to see information stored about them. Data also be accessed about public bodies.
  92. 92Technology used for monitoring-CCTV
    -GPS Devices
    -Airport Passenger List
  93. 93Technology used for monitoring- Communication-Monitoring Email
    -Monitoring Web Sites
    -Logging keywords typed into the search engines.
  94. 94Pay-per clickThe advertisers get payed every time the client clicks on the page.

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FlashCards sobre FlashCards, criado por Riley Whittington em 11-12-2018.
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