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Consider a single platter disk with the following parameters: rotation speed: 7200rpm; number of tracks on one side of platter: 30000; number of sectors per track: 600; seek time: one ms for every hundred tracks traversed. Let the disk receive a request to access a random sector on a random track and assume the head starts at track 0. a) What is the average seek time? b) What is the average rotational latency? c) What is the transfer time for a sector? d) What is the total average time to satisfy a request?
Many people have strong negative reactions to pop-up, pop-behind, interstitial, and rich media ads. Assume you are the director of an advertising agency that specializes in creating and placing these ads.
When it comes to use of information technologies, it is frequently difficult to find out how to act ethically. Consider some of your own use of information technologies.
You have been asked to present a presentation to law school class on digital crime. After presentation, a student asks why so few people are really prosecuted for computer crime.
Assuming that the initial values of the cache tags and the cache lines are completely arbitrary, Also, show how the cache tags will change for each of the above steps. You should justify your answer.
Tellers at each branch use a four-digit numeric password, and each teller's computer is transaction-coded to accept only its authorized transactions. Perform a risk assessment.
Counting heads. Given integers n and k, along with p1; : : : ; pn 2 [0; 1], you want to determine the probability of obtaining exactly k heads when n biased coins are tossed independently at random.
Database reports give us with ability to further analyze the data and give it in format which can be used to make business decisions.
Suppose a computer using direct mapped cache has 2^32 words of main memory and a cache of 1024 blocks, where each cache block contains 32 words. How many block of main memory are there?
Explain importance of chain of custody in the case of computer forensics. You may show your viewpoint by giving examples showing that "common beliefs".
Choose three information assets that a typical organization has and evaluate for risk management purposes which vulnerability should be evaluated for additional controls first?
Study a social engineering attack. What made this attack successful?
Sears is losing market share, has been acquired by K-Mart, and is eliminating jobs; Wal-mart is gaining market share and hiring. Write ethical issues involved, and which firm has a more ethical position?
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