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1 What is the most important difference between a symmetric key system and a public key system?
2 In what way does a hash function provide a better message integrity check than a checksum (such as Internet Checksum)?
3 Can you "decrypt" a hash of a message to get the original message? Explain.
4 Suppose that Bob receives a PGP message from Alice. How does Bob know for sure that Alice created the message?
5 Consider WEP for 802.11. Suppose that the data is 01010101 and the keystream is 11110001. What is the resulting ciphertext?
6. Using the monoalphabetic cipher in the textbook, encode the message "Computer is fun."
Decode the message "rmij'u uamu xyj." 7 Consider the RSA algorithm with p=5 and q=11.
a. What are n and z? b. Let e be 3. Why is this an acceptable choice for e? c. Find d such that de=1 (mod z) and d<160.
Suppose a BGPv4 router receives update for prefix P which indicates AS1 is next hop.
assignment 1 the benefits of twisted pair cable due week and worth 100 points you are a recently hired consultant for a
Create a 2-3 page paper (350 words per page) explaining the hardware and software utilized to support personal, workgroup and enterprise computing in your current organization.
The transmitter and receiver are separated by a channel (medium of transmission). What types of channels are available? Please keep it short and simple and please no copy and paste.
Keep track of number of products keeping in machine and amount of money customer has inserted. Two processes are utilized, one which accepts money and keeps track of amount paid.
design the layout of users domains trusted domains anonymous users etc for a start-up open source software company abc.
consider distributing a file of f 15 gbits to n peers. the server has an upload rate of u s 30 mbps and each peer has
develop the footer that will be used on the rest of your submissions in this course.the footer should have the
Let RTP session comprising of four users, all of which are sending and receiving packets to same multicast address. Find out RTCP bandwidth will each sender be allocated?
exercise 1 read the following papers and provide a 2 to 3 paragraph summary of main pointsa read and summarize big
project descriptionsauthentic assessment you will be given a scenario-based project that will require you to provide
Number of citizens and their actions. Clearly this has privacy, implications. Explain the ethics of developing this type of system.
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