By Eric A. Fisch
ISBN-10: 0849318688
ISBN-13: 9780849318689
This up-to-date consultant provides professional details on interpreting, designing, and enforcing all elements of computing device community safeguard. in keeping with the authors' past paintings, laptop approach and community safeguard, this new booklet addresses very important matters concerning community defense. It includes new chapters on world-wide-web protection matters, safe digital trade, incident reaction, in addition to new appendices on PGP and UNIX safeguard basics.
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Additional info for Secure computers and networks : analysis, design, and implementation
Example text
Rate each of the vulnerabilities that could be found. How many systems need to be examined to obtain an accurate reading of the environment? Justify your answers. 2 Perform a risk assessment of your environment. What recommendations would you make? Why? 1 Badenhurst, K. , “Computer Security Methodology: Risk Analysis and Project Definition”, Computers & Security, Elsevier Press, New York, New York Vol. 9, 1990. , “Security Policy”, Computers and Security, Elsevier Press, New York, New York, Vol.
After the current state is saved, the next process is loaded, having been restored to the spot at which it had previously been interrupted, and then continues to execute until its time slice has also expired and another process is swapped in. The time any single process gets before being swapped out is generally a small fraction of a second. Another characteristic of most programs is they tend to execute instructions in blocks of code as opposed to individual instructions located great distances from each other.
Instead, blocks of code can be brought in as needed. The implication is that we can actually have several processes in main memory at the same time with the operating system tasked with the responsibility of keeping track of each process and its various parts. This greatly speeds the process of swapping between programs since they do not need to actually be swapped out to secondary storage. This also, however, makes the operating system’s task harder as it maintains control of the various parts of many different programs.