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Flashcards

Topic 9

Sam Carvell Computing New Inglês 75 flashcards

Flashcards do conjunto (75)

  1. 1Serial Transmissiondata is transmitted one bit at a time down a single wire
  2. 2Parallel Transmissiondata is transmitted several bits at a time using multiple wires
  3. 3Bandwidtha measure of the capacity of the channel down which the data is being sent
  4. 4Bit ratethe rate at which data is actually being transmitted
  5. 5Baud rateA communication system’s Baud rate is the number of signal changes in the medium per second.
  6. 6Bandwidthrelates to the range of frequencies that a communication medium is capable of transmitting.
  7. 7Latencythe time delay that occurs when transmitting data between devices
  8. 8Synchronous data transmissiondata is transmitted where the pulse of the clock of the sending and receiving device are in time with each other
  9. 9Asynchronous data transmissiondata is transmitted between 2 devices that do not need to share a common clock signal
  10. 10Start bita bit used to to indicate that start of a unit of data in asynchronous data transmission
  11. 11Stop bita bit used to indicate the end of a unit of data in asynchronous data transmission
  12. 12Parity bita method of checking binary codes by counting the number of 0 and 1s in the code
  13. 13Protocola set of rules
  14. 14TCP/IPa set of protocols for all TCP/IP network transmissions
  15. 15HTTPthe protocol to define the identification, request and transfer of multimedia content over the internet
  16. 16FTPa protocol for handling file uploads and downloads
  17. 17Networkdevices that are connected together to share data and resources
  18. 18Network adapter / Network Interface Carda card that enables devices to connect to a network
  19. 19Network topologythe layout of a network, usually in terms of its conceptual layout rather than its physical layout
  20. 20Local Area Networka layout of a network, usually one one site and typically used by one organisation
  21. 21Wide area networka network spread over a large geographical distance
  22. 22Star Topologya way of connecting devices in a network where each workstation has a dedicated cable to a central computer or switch
  23. 23Bus Topologya network layout that uses one main data cable as a backbone to transmit data
  24. 24Physical TopologyThe way in which devices in a network are physically connected
  25. 25Logical Topologythe conceptual way in, data is transmitted around a network
  26. 26Client Servera network methodology where one computer has the main processing power and storage and the other computers act as clients requesting services from the server
  27. 27Peer-to-peera network methodology where all devices in a network share resources between them rather than having a server
  28. 28Wireless Wide Area Networka WAN that does not use cables, but sends data using radio waves
  29. 29Media Access Controla unique code that identifies a particular device on a network
  30. 30WiFia standard method for connecting devices wirelessly to a network and to the internet
  31. 31Wireless Local Area Networka LAN that does not use cables but connects using radio waves
  32. 32Request to send / Clear to senda protocol to ensure data does not collide when being transmitted on wireless networks
  33. 33Service Set Identifiera locally unique 32-character code that identifies a device on a wireless network
  34. 34WiFi Protected Accessa protocol for encrypting data and ensuring security on WiFi networks
  35. 35Interneta global network of networks
  36. 36Uniform Resource Locatora method for identifying the location of resources on the internet
  37. 37Domain Namethe recognisable name of a domain on the internet
  38. 38Internet Protocol Addressa unique number that identifies devices on a network
  39. 39Portused to identify a particular process or application on a network
  40. 40POP3a protocol for receiving emails
  41. 41Domain Name Servera server that contains domain names and associated IP addresses
  42. 42Port Forwardinga method of routing data through additional ports
  43. 43Socketan endpoint of a communication flow across a computer network
  44. 44Subnet Maskinga method of dividing a network into multiple smaller networks
  45. 45Dynamic Host Configuration ProtocolA set of rules for allocating locally unique IP addresses to devices as they connect to a network
  46. 46Internet registriesorganisations who allocate and adminster domain names and IP addresses
  47. 47Regional Internet Registryone of five organisations that allocate and administer domain names and IP addresses in different parts of the world
  48. 48Gatewaya node on a network that acts as a connection point to another network with different protocols
  49. 49Packeta block of data being transmitted
  50. 50RoutingThe process of directing packets of data between networks
  51. 51Packet switchinga method for transmitting packets of data via the quickest route on a network
  52. 52Checksuma method of checking the integrity of data by calculating a sum based on the data being sent
  53. 53Firewallhardware or software for protecting against unauthorised access to a network
  54. 54Packet Filteringa technique for examining the contents of packets on a network and rejecting them if they do not conform to certain rules
  55. 55Stateful Inspectiona technique for examining the contents of packets on a network and rejecting them if they do not form part of a recognised communication
  56. 56Symmetric Encryptionwhere the sender and receiver both use the same key to encrypt and decrypt data
  57. 57Asymmetric encryptionwhere a public and private key are used to encrypt and decrypt data
  58. 58Private Keya code used to encrypt/decrypt data that is only known by one user but is mathematically linked to a corresponding public key
  59. 59Public Keya code used to encrypt and decrypt data that can be made public and is linked to a corresponding private key
  60. 60Digital Certficatea method of ensuring that an encrypted message is from a trusted source as they have a certificate from a certification authority
  61. 61Certification Authoritya trusted organisation that provides digital certificates and signatures
  62. 62Digital Signaturea method of ensuring that an encrypted message is from a trusted source as they have a unique, encrypted signature verified by a certification authority
  63. 63Trojanmalware that is hidden within another file on a computer
  64. 64Virusa generic term for malware where the program attaches itself to another file in order to infect a computer
  65. 65Wormmalware or a type of virus that replicates itself and spreads around a computer system.
  66. 66Secure Shell Protocola protocol for remote access to computers
  67. 67SMTPa protocol for sending emails
  68. 68Email Servera dedicated computer on a network for handling web content
  69. 69Web servera dedicated computer on a network for handling web content
  70. 70Web browseran application for viewing web pages
  71. 71Application Program Interfacea set of subroutines that enable one program to interface with another program
  72. 72Websocket protocola set of rules that creates a persistent connection between 2 computers on a network to enable real time collaboration
  73. 73Thin Clientin a network where one computer contains the majority of the resources, processing power and storage capacity, which it distributes to other clients
  74. 74Terminala computer that has little or no processing power or storage capacity used as a client in a thin client network
  75. 75Thick Clientin a network where resources, processing power and storage capacity are distributed between the server and the clients computers

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Computing New FlashCards sobre Topic 9, criado por Sam Carvell em 07-06-2019.
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Sam Carvell
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