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7 Written questions

6 Multiple choice questions

  1. - Similar to bridge in that it routes frames.
    - most commonly used to connect individual computers.
  2. Attacker can use AT commands on victims cell to initiate calls, send messages etc.
  3. - associated with point-to-point networks.
    - point to point transmission with one sender and one receiver.
  4. data 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).
  5. transmission of frames to a subset of the machines on the broadcast network.
  6. connects 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.

6 True/False questions

  1. 802.11b- developed before 802.11a.
    - data throughput of up to 11Mbps.
    - most widely used standard; as a result the frequency is crowded; might run into interference from other wireless devices.
    - networks secured through use of WPA and WEP.
    - 2.4 ghz

          

  2. 802.11g- developed before 802.11a.
    - data throughput of up to 11Mbps.
    - most widely used standard; as a result the frequency is crowded; might run into interference from other wireless devices.
    - networks secured through use of WPA and WEP.
    - 2.4 ghz

          

  3. Packet-switching- needs to establish an end to end path before transmission.
    - analogue networks.
    - ISDN
    - PPP

          

  4. Point to point protocol (PPP)- needs to establish an end to end path before transmission.
    - analogue networks.
    - ISDN
    - PPP

          

  5. Broadcasttransmission of frames to all machines on the broadcast network.

          

  6. 802.11a- backwards compatible with 802.11b so same WAP can service 802.11g and 802.11b.

          

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