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    1. Use Run-Length encoding to compress the following:

    00110 00000 00000 10001

    Note: Two different approaches to run length encoding were presented. You may use either approach for this problem.

    2. Using front-end compression to reduce the data storage requirements for the following list.

    Uncompressed Compressed

    Aleskow, Elliot Aleskow, Elliot
    Alton, Eli {2}ton, Eli
    Altman, Paul
    Altman, Peter
    Anolik, Stuart
    Appiah, Leonard
    Apple, Vanessa

    3. Encrypt the following plaintext into ciphertext using a monoalphabetic substitution cipher with a key = 3


    4. Given an decimal dotted quad IP address of 170 . 15 . 9 . 20

    a. Convert it to a binary dotted quad address

    b. What is the class of the IP address?

    c. What is the netid?

    d. What is the hostid?

    e. If the host is divided into 32 LANs (i.e. subnets), then what would the subnet mask be? Show the subnet mask in both

    Binary dotted quad:

    Decimal dotted quad:

    5. Which station characteristic can be used to group stations into a VLAN?

    _____ Port numbers

    _____ MAC addresses

    _____ IP addresses

    _____ All of the above

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    Solution Preview

    Question 1) We group 7 bits or 8 bits to group together in run length encoding. In here we got 8 consecutive 0s so we can group them and specify how many of them.So we got the ...