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7 Written Questions

6 Multiple Choice Questions

  1. - chatty.
    - no dedicated path required.
  2. - backwards compatible with 802.11b so same WAP can service 802.11g and 802.11b.
  3. - operates in different frequency range - 5 GHZ.
    - less prone to interference.
    - greater speeds.
    - not as widely used.
  4. - available in a range of mobile devices.
    - operates in both ad-hoc mode and infrastructure mode.
    - by default security is disabled but does have three security modes, ranging from full data encryption to integrity control.
    - only authenticates devices, not users.
    - vulnerable to buffer over flow.
  5. allows an anonymous message to be displayed on victims device.
  6. - Similar to bridge in that it routes frames.
    - most commonly used to connect individual computers.

6 True/False Questions

  1. Multicasttransmission of frames to a subset of the machines on the broadcast network.

          

  2. WEPdata link layer does not understand IP addresses.
    ARP sends out request, who owns IP address? this is used to build table of MAC 48 bit addresses to IP addresses.
    - defined in RFC 826.
    - vulnerable to ARP poisening ( adding bogus entries to ARP cache).

          

  3. Blue bug attack (bluetooth)Attacker can use AT commands on victims cell to initiate calls, send messages etc.

          

  4. ARPdata link layer protocol described by the 802.11 standard.
    - uses RC4 often reuses IV.
    - many installations use the same shared key for all users, so each user can read each others traffic.
    - vulnerable to a number of known attacks.

          

  5. Broadcast- associated with point-to-point networks.
    - point to point transmission with one sender and one receiver.

          

  6. bridgesconnects two or more LANs.
    When a frame arrives, software in the bridge extracts the frame header and looks it up in a table to see where to send the frame.
    - different line cards for different technologies, Ethernet, FDDI etc.
    - each line has its own collision domain.

          

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