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Unit 2 - Networking Flashcards

Computing ODA Computing GCSE Inglés 124 fichas

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  1. 1What does LAN stand for?Local Area Network
  2. 2A LAN covers a _____ area located on a single site.Small
  3. 3All the hardware for a LAN is owned by who?The organisation.
  4. 4LANs can either be wired or ________.Wireless.
  5. 5Name two places where you might find LANs.Businesses, Schools, Universities.
  6. 6What piece of hardware is needed to have a wired connection?Ethernet cable are needed to have a wired connection.
  7. 7How is a wireless connection formed?It is formed using Wi Fi.
  8. 8Sharing _____ is easier because users can access them across machines.Files.
  9. 9You can share the same ________ like printers with a LAN.Hardware.
  10. 10The internet __________ can be shared between every device.Connection
  11. 11You can install and update ________ on all computers at the ____ time rather than one by one.You can install and update software on all computers at the same time rather than one by one.
  12. 12You can ___________ with LAN users cheaply and easily using _______ messaging.You can communicate with LAN users cheaply and easily using instant messaging.
  13. 13User ________ can be stored centrally so users can log in from ___ device.User accounts can be stored centrally so users can log in from any device.
  14. 14What does WAN stand for?Wide Area Network.
  15. 15A WAN is made up of multiples whats?A WAN is made up of multiple LANs.
  16. 16A business with offices in different countries would need a WAN for the computers to connect together. (True Or False)True
  17. 17Which is more expensive to set up? A LAN or a WAN.A WAN.
  18. 18Name two ways a WAN ca be connected.Telephone lines, Satellite links or radio links.
  19. 19What is the biggest, and the most important for the function of the universe, WAN?The Internet.
  20. 20Name four factors affecting Network performance.Bandwidth, Connection type, Connection methods, amount of interference on wireless networks, choice of hardware and network topologies (topographies).
  21. 21What does NIC stand for?Network interface controller (card)
  22. 22What does a NIC allow computers to do?It allows computers to connect to a network.
  23. 23Switches are used on what type of network?LAN
  24. 24What do switches do?They connect devices on a LAN.
  25. 25Routers are used to do what?Transfer data between networks.
  26. 26Routers transfer data in units called what?Packets.
  27. 27What type of cables are needed to connect devices in a LAN?Ethernet Cables.
  28. 28Name the two most common types of Ethernet cable.CAT 5e and CAT 6.
  29. 29The most common types of Ethernet cables are what type of cable.Twisted Pair cables.
  30. 30What is the structure of a twisted pair cable?They contain four pairs of copper wires which are twisted together to reduce internal interference.
  31. 31What is the structure of coaxial cables?They are a single copper wire surrounded by a plastic layer for insulation and a metallic mesh to prevent interference.
  32. 32Fibre optic cables transmit data as what?Light!
  33. 33Link the performance of fibre optic cables to their cost.Fibre optic cables are high performance and therefore high cost cables.
  34. 34Describe a fibre optic cable's performance in terms of interference and signal quality.They don't suffer from interference and can transmit data over great distances without a loss in signal quality.
  35. 35How do wireless connections transmit data?They use radio waves.
  36. 36What does a WAP stand for?Wireless access point.
  37. 37What piece of hardware is needed for a wireless connection?WAP
  38. 38True or False? WAPs and hotspots are the same.FALSE!!
  39. 39What is the standard for Wireless networks?Wi-Fi
  40. 40Wi-Fi uses two frequency bands. Name one of them.2.4GHz or 5GHz
  41. 41The frequency bands used for Wi-Fi are split into what?They are split into numbered channels.
  42. 42True or False? The Wi-Fi channels overlap frequencies?True. Each band covers a small frequency and those bands overlap each other.
  43. 43What kind of network requires you to have a client and a server?A client server network.
  44. 44What is a client server network managed by?A server.
  45. 45What is the name of the devices connected to the server in a client server network?Clients
  46. 46Where are files stored on a client server network?Centrally through the server rather than on each computer.
  47. 47Clients send ________ to the server asking for data for example.Clients send requests to the server asking for data for example.
  48. 48What is the client server relationship?When a client requests data and a server processes that request and responds.
  49. 49Give two examples of what a server stores.User names, passwords, access rights.
  50. 50Tracking files. Does client server networks make it better or worse?Better
  51. 51Performing Backups Does client server networks make it better or worse?Better.
  52. 52Installing and updating software. Does client server networks make it better or worse?Better.
  53. 53Managing network security. Does client server networks make it better or worse?Better.
  54. 54Reliability. Does client server networks make it better or worse?Better. Servers are always switched on.
  55. 55Cost to set up and maintain it? Does client server networks make it better or worse?Worse. It is expensive for IT technicians to set the network and server up and keep it running.
  56. 56Server dependence. Does client server networks make it better or worse?Worse. If the server goes down, clients lose all access to their work.
  57. 57What happens if too many people try to access the server at once.It overloads if too many people access the server at once.
  58. 58What does p2p stand for?Peer to peer. (network)
  59. 59What piece of hardware do p2p networks not require?Servers.
  60. 60What is a topology?The layout of a computer network.
  61. 61Topography is another word for what?Topology.
  62. 62Give three examples of types of network topology including the two needed for your exam.Exam- Star and Mesh
    Others- Ring, Bus etc.
  63. 63In a star topology, all devices are connected to the centre. What device is this?Switch.
  64. 64What device does the switch connect to?The server.
  65. 65True or False? Star networks can only be wired.False. They can be wired or wireless.
  66. 66What is the role of the switch?Allows multiple devices to have access to the server at once.
  67. 67In a star network what happens to the network when a device fails or a cable is disconnected?Nothing. It remains unaffected.
  68. 68What happens to the network is the switch or server fails on a star network?The whole network shuts down.
  69. 69In a wired, star network, how many devices must be connected to the switch for it to work.All of them. It can be expensive for large businesses.
  70. 70True or False? Star networks have better performance than other networks.True. This is because data goes straight to the central server.
  71. 71What problem is common on bus networks?Data collisions.
  72. 72In a ring topology, how many devices are able to send data at a time?Only one device can send data at a time.
  73. 73In a mesh topology what are all devices connected to?They are connected to each other.
  74. 74What is a network protocol?It is a set of rules for how devices communicate and transmit data over a network.
  75. 75Name two things which a protocol actually covers?How communication between two devices should start and end, how the data should be organised and what devices do if data goes missing.
  76. 76What address is used to communicate on the same network?MAC Address.
  77. 77What kind of devices are given a MAC address and who gives them this address?All network enabled devices are given a unique MAC address by the manufacturer.
  78. 78How many times can you change a MAC address?You can never change a MAC address.
  79. 79Describe the layout of a MAC address.A MAC address is a string of 48 or 64 bit binary numbers. (In layman's terms 48 or 64 1s and 0s.)
  80. 80To make them easier to use what is a MAC address converted into?Hexadecimal.
  81. 81Name the network and protocol which MAC addresses are typically used.MAC addresses are typically used by the Ethernet protocol on LANs.
  82. 82What piece of hardware in a LAN uses the MAC address and how is it used?Switches read the MAC address and direct data to the appropriate device.
  83. 83What kind of network address is used when transferring data between different networks?IP address.
  84. 84IP addresses come in two forms. Name them and what they mean.Static is where the IP address is set manually. Dynamic is where the IP address is set automatically.
  85. 85Static or Dynamic? They are permanent.Static
  86. 86Static or Dynamic? Used to connect printers on a LAN.Static
  87. 87Static or Dynamic? Used to host websites on the internet.Static
  88. 88Static or Dynamic? Can be very expensive.Static
  89. 89Static or Dynamic? Assigned by the network.Dynamic
  90. 90Static or Dynamic? Allows you to have a different IP address every time you log into a network.Dynamic
  91. 91Static or Dynamic? Used by internet service providers.Dynamic
  92. 92Static or Dynamic? Cost effective and reusable.Dynamic
  93. 93Link the reasons as to why businesses pay large amounts of money for static IP addresses.Companies don't want their websites IP addresses changing and as they are generally more expensive, they pay the money.
  94. 94An IP address is written in what two forms and how are they converted?Either a 32 bit binary which is converted into 4 denary numbers or a 128 bit binary which is converted into 8 hexadecimal numbers.
  95. 95For a LAN and between multiple networks, state what data is sent in and how it is directed using which address.LAN - Sent in frames, directed by switches, IP address.
    Other - Sent in packets, directed by routers, MAC address.
  96. 96Data over multiple networks are sent in packets. Describe the size of each packet.They are equally sized.
  97. 97Every data packet has a header. What does it contain.Control Information
  98. 98In a packet of data what is meant by the control information?It states the destination address (destination), the source address (where it was from) and the packet number.
  99. 99What is the data packet's payload?It is what the person will see. It could be part of an email, picture or streamed video.
  100. 100Packets are also likely to have a checksum or packet number. What is the point of having a checksum number and what are they?They are a form of validation used to make sure none of the data gets corrupted.
  101. 101What happens with the checksum numbers to make sure data packets don't end up corrupt?Both devices sending and receiving data perform a specific function with the numbers. If the values match then the transfer was a success.
  102. 102What is packet switching?It is used by routers to direct packet data on the internet and on other IP networks.
  103. 103Name the steps involved in sending data across networks using packet switching.Data is split into packets, Routers read packet headers and decide it's route, Packets numbers help reorder the data, once checksums match it's complete.
  104. 104What two protocols are in the TCP/IP protocol?It is made up of two networks the TCP protocol and the IP protocol.
  105. 105What is the function of the TCP/IP protocol?Dictates how data is transferred across networks.
  106. 106What does the TCP protocol stand for and what is it's function?Transmission Control Protocol
    How devices connect. In charge of splitting and reassembling data into packets.
  107. 107What does the IP protocol stand for and what is it's function?Internet Protocol
    Responsible for packet switching.
  108. 108What does the HTTP protocol stand for and what is it's function?Hypertext Transfer Protocol
    Used by web browsers to access websites and communicate with web servers.
  109. 109What does the HTTPS protocol stand for and what is it's function?HTTP Secure
    A more secure version of HTTP. Encrypts all information sent and received.
  110. 110What does the FTP protocol stand for and what is it's function?File transfer Protocol
    Used to access, move and edit files on a network.
  111. 111What does the POP3 protocol stand for and what is it's function?Post Office Protocol v.3
    Used to retrieve emails. The server holds the file until downloaded at which point it is deleted.
  112. 112What does the IMAP protocol stand for and what is it's function?Internet Message Access Protocol
    Used to retrieve emails. The server holds the email until deleted. You receive a copy.
  113. 113What does the SMTP protocol stand for and what is it's function?Simple Mail Transfer Protocol
    Used to send emails. Also used when transferring emails between servers.
  114. 114What are network protocols divided into?Layers.
  115. 115What is a layer?A group of protocols with similar functions.
  116. 116Layers are self-contained. Explain what this means in terms of the other layers.The protocols in the layers do their job without any information about what goes on in other layers.
  117. 117Each layer serves the layer _____ it. E.g when you send an email on layer _ this triggers actions in layer 3.Each layer serves the layer above it. E.g when you send an email on layer 4 this triggers actions in layer 3.
  118. 118Name the four layers of network protocols. In order starting with layer 4.Application layer
    Transport layer
    Network layer
    Data Link layer
  119. 119What is the function of the application layer?Turning data into websites and other applications and vice versa.
  120. 120What is the function of the transport layer?Controlling data flow. Splitting data into packets and checking packets are correctly sent and delivered.
  121. 121What is the function of the network layer?Making connections between networks, directing data packets and handling traffic.
    (Used by servers)
  122. 122What is the function of the data link layer?Passing data over the physical network. Responsible for how bits are sent as electrical signals over cables, wireless and other hardware.
  123. 123Can you put the following protocols with each layer? HTTP, IP, Ethernet, FTP, TCP, SMTP.HTTP, FTP & SMTP - Application
    TCP - Transport
    IP - Network
    Ethernet - Data link
  124. 124What are the advantages of using layers?It breaks network communication into manageable chunks. They can change without affecting other layers. Forces companies to make universal hardware.

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GCSE Computing Fichas sobre Unit 2 - Networking Flashcards, creado por Computing ODA el 27/09/2017.
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Computing ODA
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  • Creado por un usuario eliminado · 5 dic 2016
  • Copiado por Computing ODA · 27 sep 2017
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