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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.
Consider the Stop-and-Wait ARQ. Drawing message sequence diagram illustrating that if network connection between sender and receiver can reorder messages,
The following memory partitions of 100 kb, 500 kb, 200 kb, 300 kb, and 600 kb, how would each of the 1st-fit, best-fit, and worst-fit algorithms place processes of 212 kb, 417 kb, 112 kb, and 426 kb?
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Describe Quality of Service (QoS) and explain the motivation behind QoS Referring to the diagram below, configure Routers 1, 2, and 4 with Internet Protocol (IP) addresses, and ping between them to test connectivity. Write down complete commands..
investigate the weaknesses that arise in Elgamal encryption if a public key of small order is used. We look at the following example. Assume Bob uses the group Z
A quality control manager has used algorithm C4.5 to come up with rules that classify items based on several input factors. The output has two classes -- Accept and Reject. An item classified as Reject is actually good?
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Compare the time for a query and response for a complete DNS query and response (to all required nameservers) if M=1, M=2, and M=3.
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Determine the result of scrambling sequence 11100000000000 by using one of the following scrambling techniques? Suppose that last non-zero signal level has been positive.
In the TS RemoteApp Manager console, there are currently two warning indicators showing in the Overview area. Will any of these warnings make it impossible to access your RemoteApp applications from your partner server?
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