block5.1.txt

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ralowery
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block5.1.txt
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2014-05-21 20:10:11
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block5.1
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    • author "me"
    • tags ""
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    • description ""
    • fileName "block5.1"
    • what is significant about a "Recommended Standard” protocols
    • are usually implemented by hosts connected to the Internet.
  1. what is significant about a "elective standard" protocols
    are not usually implemented, but can be implemented in order to accommodate specific requirements.
  2. what is significant about a "elective proposed" protocols
    were discussed and agreed upon, but their implementation has never come into wide use.
  3. what is a communications protocol
    is a set of rules and regulations by which computers networked together can communicate
  4. what are the three general classifications of communications protocols
    • open
    • closed
    • hybrid
  5. what does RFC stand for
    request for comment
  6. what does IETF stand for
    internet engineering task force
  7. what is significant about a "required standard" protocol
    protocol must be implented on any host connected to the internet
  8. how do layered protocols operate during a transmission operation
    from top down
  9. what is the most popular protocol suite employed today
    transmission control protocol/ internet protocol (TCP/IP)
  10. what is open protocol commonly referred as
    public protocol
  11. what does PCP stand for
    peer-to-peer control protocol
  12. what does TCP/IP stand for
    transmission control protocol/ internet protocol
  13. what does ARPANET stand for
    advanced research project agency network
  14. what does DARPA stand for
    defense advanced research project agency
  15. from the top down, what are the four layers of the TCP/IP protocol stack
    • application layer
    • host-to-host layer
    • internetwork layer
    • network interface layer
  16. what layer of the OSI reference model does the network interface layer of the TCP/IP protocol stack correspond to
    • data link
    • physical
  17. what layer of the OSI reference model does the internetwork layer of the TCP/IP protocol stack correspond to
    network
  18. what TCP/IP layer provides the logical addressing for IP
    internetwork layer
  19. what layer of the OSI reference model does the application layer of the TCP/IP protocol stack correspond to
    • application
    • presentation
    • session
  20. what does PDU stand for
    protocol data unit
  21. at what TCP/IP layer do segments exist
    host-to-host
  22. at what TCP/IP layer do packets exist
    internetwork layer
  23. at what TCP/IP layer do frames exist
    network interface
  24. at what TCP/IP layer do bits exist
    network interface
  25. how many bits are contained in an IP version 4 address
    32
  26. what is the minimum value that can be contained in an octet of an IP address
    0
  27. what is the maximum value that can be contained in an octet of an IP address
    255
  28. how many classes of IP addresses are there
    • 5
    • class A
    • class B
    • class C
    • class D
    • class E
  29. what classes of IP addresses provide host addressing support
    • class A
    • class B
    • class C
  30. first octet ranges from 192-223
    C
  31. two octets belong to the host portion
    B
  32. 126 valid networks
    A
  33. supports a maximum of 65,534 hosts per network
    B
  34. leading four bits set to 1-1-1-0
    D
  35. reversed for research only
    E
  36. 16,384 valid networks
    B
  37. three octets belong to the host protion
    A
  38. two octets belong to the network portion
    B
  39. default subnet mask of 255.255.255.0
    C
  40. one octet belongs to the host portion
    C
  41. leading four bits set to 1-1-1-1
    E
  42. first octet ranges from 1-126
    A
  43. default subnet mask of 255.255.0.0
    B
  44. leading bit set to 0
    A
  45. 2,097,152 valid networks
    C
  46. three octets belong to the network portion
    C
  47. used for multicasting
    D
  48. supports a maximum of 254 hosts per network
    C
  49. leading bits set to 1-0
    B
  50. first octet ranges from 128-191
    B
  51. supports a maximum of 16,777,214 hosts per network
    A
  52. default subnet mask of 255.0.0.0
    A
  53. leading bits set to 1-1-0
    C
  54. one octet belongs to the network portion
    A
  55. first octet ranges from 224-239
    D
  56. first octet ranges from 240-255
    E
  57. what is the function of the 127 network
    • loopback function
    • that means that a datagram sent by a higher level protocol to a network 127 address should loopback inside the host
  58. what does IANA stand for
    Internet assigned numbers authority
  59. what devices will forward a limited broadcast
    • repeaters
    • hubs
    • bridges
    • switches
  60. what is the definition of a directed broadcast
    is a packet sent to an IP address that has the host portion set to all 1's or all 0's
  61. what three address blocks have been reserved by the IANA for private internet use
    • 10.0.0.0-10.255.255.255 A
    • 172.16.0.0-172.31.255.255 B
    • 192.168.0.0-192.168.255.255 C
  62. what does NAT stand for
    network address translation
  63. what is class A
    • start with 01
    • 1-126.0.0.0
  64. what is class B
    • starts with 10
    • 128.0-191.255.0.0
  65. what is class C
    • starts with 11
    • 192.0.0-223.255.255.0
  66. what is class D
    • starts with 111
    • 224.0.0.0-239.255.255.255
  67. what is class E
    • starts with 1111
    • 240.0.0.0-255.255.255.255
  68. what does MAC stand for
    media access control
  69. default subnet mask for class A
    255.0.0.0
  70. default subnet mask for class B
    255.255.0.0
  71. default subnet mask for class C
    255.255.255.0
  72. what does ISP stand for
    internet service providers
  73. what does ARIN stand for
    American Registry for Internet Numbers
  74. what does RIR stand for
    Regional Internet Registries
  75. what is limited broadcast
    • Often referred to as a “local” broadcast.
    • A limited broadcast is a packet sent to an IP address of either all 1s or all 0s.
  76. what are the two primary types of Layer 3 broadcasts:
    • limited broadcast
    • directed broadcast
  77. what does RFC 1918 define
    • “Address Allocation for Private Internets”.
    • The IANA has reserved the following three address blocks for private Internets:
    • class A 10.0.0.0 - 10.255.255.255
    • class B 172.16.0.0 - 172.31.255.255
    • class C 192.168.0.0 - 192.168.255.255

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