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1. Multiple jobs can run in parallel and finish faster than if they had run sequentially. Suppose that two jobs, each needing 20 minutes of CPU time, start simultaneously. How long will the last one take to complete if they run sequentially? How long if they run in parallel? Assume 50% I/O wait.
2. Consider a multiprogrammed system with degree of 6 (i.e., six programs in memory at the same time). Assume that each process spends 40% of its time waiting for I/O. What will be the CPU utilization?
3. Assume that you are trying to download a large 2-GB file from the Internet. The file is available from a set of mirror servers, each of which can deliver a subset of the file's bytes; assume that a given request specifies the starting and ending bytes of the file. Explain how you might use threads to improve the download time.
Did you know that you do not have to start from scratch if your site is not accessible? There are a few techniques you may incorporate to your site.
How many disk I/O operations might be need to read contents of small local file at /a/b/c? suppose that none of disk blocks is presently being cached.
Definite versus Indefinite Loops
2.Use the graph to illustrate the economic concepts of scarcity, unemployment, inefficiency, and opportunity costs. When possible, use data points on the graph to accompany your verbal explanation.
1) Describe some reasons why Linux is installed on only a very small fraction of desktop computers. Are there particular categories of products or users who might see Linux as more appealing than conventional operating systems? Do you think Li..
Understanding access control is a critical part of IT security. There are many factors to consider when choosing the "right" solution for your particular situation. Demonstrate your knowledge of access controls by briefly describing two of them..
Classify each of the following occurrences as an incident or disaster. If an occurrence is a disaster, determine whether or not business continuity plans would be called into play.
Display each of these constants in decimal, in hexadecimal, and as a character usingcout. Your program will have a total of ninecoutstatements.
Security of your data is of utmost importance to Jamie, even more so than ease of access or speed of processing. Which type of application category would you recommend Jamie use?
Organizational Systems security: Define the communication model that best describes the existing state of communications at your company and leverage that model to identify the weaknesses/points of failure in the existing system
What is meant by artificial intelligence? What are two essential differences between human brains and the central processing unit of a computer.
Write a paper that discusses the following: Consider a system that supports 5,000 users. Suppose you want to allow 4,990 of those users to be able to access one file. How would you specify this protection scheme in UNIX®
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