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the ciphers in the following problem use this alphabet of 10 digits, 26 letters, and 3 punctuation marks - 39 charactters is all
0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ
a) use calculator but show all work- Decrypt the message ??KYYHV7XBSU. It was encrypted using an affine cipher. What key was used to encrypt? First three characters of plain text is 221
b) use computer- Same alphabet as a). Decrypt the message that was encrypted with a caesar cipher. W?YY?~.X112T3. Key is unknown
c) Explain what you can do to find the length of they keyword for a vigenere cipher, If you are given a substantial amount of ciphertext. Feel free to explain using an example.
You have been contracted to make a network for a multimedia development firm which currently uses 10-Mbps Ethernet network. Company needs a high-bandwidth network for multimedia team.
When one of these packets arrives to packet switch, what information in packet does switch use to determine link onto which packet is forwarded?
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