The Internet

85 flashcards · Other · by Ian Christensen

1. What is a Local Area Network (LAN)?

   A group of computers connected to a switch that allows them to communicate with each other and gives them an identical network ID

2. What does LAN stand for?

   Local Area Network

3. What is a Wide Area Network (WAN)?

   Two or more LANs connected via one or more routers

4. What does WAN stand for?

   Wide Area Network

5. What is a Metropolitan Area Network (MAN)?

   A WAN that spans a city

6. What does MAN stand for?

   Metropolitan Area Network

7. What is a Personal Area Network (PAN)?

   A point-to-point connection between two Bluetooth devices

8. What does PAN stand for?

   Personal Area Network

9. What is a Network Operation Centers (NOCs)?

10. What does NOCs stand for?

    Network Operation Centers

11. Peering Agreements

12. What is Tier 1 of the internet?

    Providers that don't pay anyone but instead have peering agreements

13. What is Tier 2 of the internet?

    Some peering agreements

14. What is Tier 3 of the internet?

    ISPs without peering agreements

15. What is an Internet Service Provider (ISP)?

16. What does ISP stand for?

    Internet Service Provider

17. What is Dial Up?

18. What is Plain Old Telephone Service (POTS)?

19. What does POTS stand for?

    Plain Old Telephone Service

20. What is Public Switched Telephone Network (PSTN)?

21. What does PSTN stand for?

    Public Switched Telephone Network

22. RJ-11 Connector

23. What does RJ-11 stand for?

24. What is a Modem?

    A modem converts analog POTS to digital COM port connections

25. What does Modem stand for?

26. What is a DB-25 and DB-9 Serial Connectors used for?

    The DB-25 connects to the back of a modem and the DB-9 connects to the back of a computer

27. What is a comport?

    (How windows recognizes serial connections?)

28. What does comport stand for?

29. How do you setup dial up in Windows 10?

    Settings > Network Connections > Dial-up > Set up a new connection

30. What is the maximum speed when using Dial-up?

    56 Kbps

31. What is Integrated Services Digital (ISDN)?

    Completely digital line that would run at 64 kbps or 128 kbps

32. What does ISDN stand for?

    Integrated Services Digital

33. Terminal Adapter

    ISDN version of the modem?

34. What is broadband?

35. What is Digital Subscriber Line (DSL)?

36. What does DSL stand for?

    Digital Subscriber Line

37. What is a DSL Modem or DSL Terminal Adapter?

38. What is Asymmetric DSL?

    Upload speed was slower than your download speed

39. What does ADSL stand for?

    Asymmetric Digital Subscriber Line

40. What is Symmetric DSL (SDSL)?

    Upload and download speeds are the same

41. What does SDSL stand for?

    Symmetric Digital Subscriber Line

42. What are the common speed ranges for DSL?

    Upload speeds ranging from 768 Kbps to 3 Mbps Download speeds ranging from 1.5 Mbps to 7+ Mbps

43. What is Point-to-Point Protocol Over Ethernet (PPPoE)?

44. What does PPPoE stand for?

    Point-to-Point Protocol Over Ethernet

45. What is an F-Type Connection?

46. What is Data Over Cable Service Interface Specification (DOCSIS) internet connection?

47. What does DOCSIS stand for?

    Data Over Cable Service Interface Specification

48. What were common speeds for DOCSIS?

    Upload speeds ranging from 1.5 Mbps to 50 Mbps Download speeds ranging from 10 Mbps to 100 Mbps

49. What is Cable internet connection?

50. What is Satellite internet connection?

51. What are common speeds for Satellite connections?

    Upload speeds around 3 Mbps Download speeds around 25 Mbps

52. Latency

    Stalling connection

53. What is an 802.11 internet connection?

54. What are the different types of internet connection?

    Dial Up Cable Satellite 802.11

55. What do all internet connections require?

    A client and a server

56. What is the primary function of a firewall?

    To block port numbers

57. How do client and server networks maintain safe connections?

    Using a firewall

58. How does a client communicate through a firewall with a server?

    The client sends a package via outbound protocol port 80 that contains a return address. The computer has to go through the default gateway that allows outbound port 80 and blocks incoming port 80 before getting to the server's router that listens on port 80. Once the server receives the package it uses the return port address when sending the data back to the client.

59. What is File Transfer Protocol (FTP)?

    Web browsers are FTP clients

60. What does FTP stand for?

    File Transfer Protocol

61. What port does FTP use?

    Port 21

62. What is a robust FTP client?

    FileZilla

63. What are Active and Passive mode on FileZilla?

    Passive mode means everything runs on port 21 while Active mode uses port triggering and port 20 for faster speeds

64. What is Simple Mail Transfer Protocol (SMTP)?

    SMTP is the outgoing protocol for email

65. What port does SMTP use?

    Port 25

66. What does SMTP stand for?

    Simple Mail Transfer Protocol

67. What is Post Office Protocol (POP)?

    POP is an incoming email protocol that requires the user to setup their folders locally on the email client

68. What is port triggering?

69. What port does POP3 use?

    Port 110

70. What does POP stand for?

    Post Office Protocol

71. What is Internet Message Access Protocol (IMAP)?

    IMAP is an incoming email protocol that stores the users' folders on the server

72. What port does IMAP4 use?

    Port 143

73. What does IMAP stand for?

    Internet Message Access Protocol

74. Do SMTP, POP, and IMAP always use ports 25, 110, and 143?

    No. In the real world these protocols often use more secure port numbers, but these are the standards.

75. What is a proxy server?

    (Proxy servers can do caching)

76. What is a Virtual Private Network (VPN)?

77. What does VPN stand for?

    Virtual Private Network

78. What is a VPN tunnel?

79. How does VPN manifest on Windows 10?

    VPNs manifest on Windows 10 as a network card

80. What is split tunneling?

81. What is the Internet of Things (IoT)?

82. What does IoT stand for?

    Internet of Things

83. How do home automation products connect to the internet?

    802.11

84. What is Zigbee?

    The app? that operates home automation products and runs on the 2.4 Ghz

85. What is Z-Wave?

    The app? that operates portable phones and runs on the 900 Mhz