Rounds and Clouds
CS 3240: Data-Comm and Networks
(Fall 2015)

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    Homework 7
    Due: Wed Oct 14 2015

  1. 0 points: An organization has a block of 1024 classless IPv4 addresses. They want to create subnets of that block with sizes 500, 200, 100, and 100. Is this possible?

  2. 50 points: An organization has a block of 1024 classless IPv4 addresses. They want to create subnets of that block with sizes 500, 200, 200, and 5. Is this possible?

  3. 0 points: An organization has a block of classless IPv4 addresses that include 34.13.26.5/23. They want to subnet into blocks of 200, 100, and 50 addresses. Is this possible? If so, what are the first and last addresses for each subnet?

  4. 50 points: An organization has a block of classless IPv4 addresses that include 60.12.87.12/25. They want to subnet into blocks of 50, 25, and 25 addresses. Is this possible? If so, what are the first and last addresses for each subnet?

  5. 0 points: Cinder Mustarum returns to Pallet Town after exploring the long grass. He plugs his Pokedex into the network at the local Pokemon Center, hoping to get an IP address.

    1. What is the first type of DHCP message his Pokedex sends?
    2. Which IPv4 address does the Pokedex send this message to?
    3. What is the source IP address specified in this message?

  6. 60 points: The Pokemon Center's DHCP server at address 132.24.207.128/25 responds with another message offering Cinder's Pokedex the address 132.24.207.145/25.

    1. What is the type of this DHCP message?
    2. Which IPv4 address does the DHCP server send this message to?
    3. What is in the Your-address field?
    4. What is the source IP address specified in this message?

  7. 60 points: Cinder's Pokedex accepts that IP and sends an acceptance message.

    1. What is the type of this DHCP message?
    2. Which IPv4 address does the Pokedex send this message to?
    3. What is the source IP address specified in this message?

  8. 20 points: The server acknowledges receipt of the last message by sending another message.

    1. What is the type of this DHCP message?
    2. Which IPv4 address does the DHCP server send this message to? (Hint: this is actually sent broadcast-style!)

  9. Total Points: 240