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Various computers and operating systems in the past have used separate instruction and data spaces, allowing up to 2k program addresses and also 2k data addresses using a k- bit address. For example, for k = 32, a program could access 4 GB of instructions and also 4 GB of data, for a total address space of 8 GB. Since it is impossible for a pro- gram to overwrite itself when this scheme is in use, how could the operating system load programs into memory?
Assume you are network administrator for a new corporation that has ten users and plans to add five more users within a year. The files require to be accessed by all ten users and each user must have different security rights.
1.concurrency of course is a requirement for modern operating systems. what are the major challenges that an os
Construct a Unix shell script to input number of hours worked and pay rate and compute the total pay, then the social security amount, then the net pay.
A soft real time system has 4-periodic events with periods of 50, 100, 200 and 250 msec each. Assume 4-events need 35, 20, 10 and X msec of CPU time, respectively.
question 1a explain two reasons driving the creation of processes.b suppose we want a system to have two ready states
Remembering that there's a trade-off between memory use. Then give an example where doing so will cause throughput to suffer.
questiona process is a program under execution and as it executes it changes state. the state of a process is defined
What is the maximum consecutive period of time any process remains in the ready queue (the max waiting time) expressed in terms of N,S,Q?
Assume you are currently working for Surebank, a medium financial institution. The company has approximately eighty people working in their main location where your office is located.
Discuss and explain the statement: "Global communication has developed to such a degree that the true operating system is the net itself, where the individual operating systems are just its nodes".
Design an improved interactive password system? Present your design and describe what kind of attacks your protocol can protect.
In the BitTorrent P2P file distribution protocol, the seed breaks the file into blocks, and the peers redistribute the blocks to each other.
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