This Homework Is Due By 11:59 PM on Friday November 4, 2016

  1. Explain the use of the pseudo-header for a UDP datagram and TCP segment. When is it used? Is it transmitted with the datagram? How does the ultimate destination obtain the contents of the pseudo-header?


  2. The TCP/IP layering architecture is shown in the following figure. Explain the message life cycle for a message originating from an application on Host A to an application on Host B. Are the frames and datagrarams identical on both sides of Router R? Why or why not?
    3. tcpip-stack

    Please submit the essay question(s) in Blackboard in Homework 6 (Essay Questions) as a typed Microsoft Word file or a PDF file. No other forms of submission will be accepted.



  3. Given that a frame is formatted as follows:

    Frame Header

    And given that an IP datagram is formatted as follows:

    IP Header

    And given that a UDP datagram is formatted as follows:

    UDP Header

    And given the following frame with an encapsulated IP datagram and UDP datagram:

    Homework 6 UDP Datagram

    1. What fragmentation flags are set?
    2. What is the fragment offset?
    3. What is the TTL count?
    4. What is the source IP Address?
    5. What is the class of the source IP Address?
    6. What is the Destination IP Address?
    7. What is the class of the Destination IP Address?
    8. What is the UDP source port?
    9. What is the UDP destination port?
    10. What is the UDP message length?
    11. What is the UDP checksum?
    12. If the UDP header and the IP header include no options or padding, what are the first five bytes of the datagram data?

    4. Please submit the numerical question(s) on Blackboard in Blackboard in Homework 6 (Numerical Questions) No other forms of submission will be accepted.