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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.
For the client-server application over TCP why must the server program be executed before the client program? why may the client program be executed before the server program.
you have just been hired as the security administrator of a major organization that was recently breached by a social
Give a most implementable WLAN design solution for office with 20 wireless employees, using WLAN capable laptops to access email, Internet, small accounting applications.
How could the articles or recommendations at the CFO site help your efforts? Are these subjects where we should be looking to for future investments?
You have to create your own message format and provide IDs in any way you want. At minimum message should have source address, destination address, TTL and address of sending node etc.
How many wait states (clock cycles) need to be inserted for proper system operation if bus clocking rate is 8 MHz?
It is significant to know what issues are for encrypting data in the database. Comment on what you think is most significant obstacle to encryption. Describe your position.
assignment on mirror mirror on the ceiling flexible wireless links for the data center.please answer the following
Develop the disaster plan for selected organization which includes how you would suggest company back up and protect network data.
q1. suggest the best way to use the terminal services gateway and authorization policies in different enterprise
Write down the main components of good security policy? Write down some of the most common attacks, and how can the network be protected against these attacks?
1 are companies that introduce a significant change in their industries thus causing a disruption in normal business
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