1 Identify three benefits of multiprocessor systems 2 How do

1. Identify three benefits of multiprocessor systems.

2. How does the OS manage processes?

1)be able to name five OS management activities related to processes

3. Identify three management activities an OS conducts with memory.

4. Why does the OS need to hide peculiarities of I/O subsystems?

5. What is the difference between protection and security?

6. What is the difference between a dumb terminal and a computer?

Solution

1) The Benefits of multiprocessor systems are as below

1.Reduced cost: multiple processors parts into similar resorces.moreover the mother board or powersupply for every chip is unnecessary,which decreases the cost.

   2.increased reliability:The perfomance of system additionally enlarged.many procedures are needed to obtain increased perfomance .if a single processor damages ,it won\'t simulate the remaining processors and moreover unable to reduce the speed of processor.

3.Increased throughput:As the processor rises the du ration of work takes place in less duration.doubling the amount of processors should derease to halve to finish the task ,it is because of overhead in communuication.

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2) The OS Manages total resources like hardware and software in computer.hence the Operating system is known as resource locator.it handles the suspension and resumption process in a computer.

1) five OS Management activities related to process

1.Process Management: It handles several types of activities varying from user programm to system programm such as name servers and file servers...etc .it must be kept in my that the process is not a unique.

1.to keep the path of which slice of memory are present utilized and by whom.

2.to confirm type of process which are biased into memory if the memory space is occur.

3.deallocate and allocate the memory based on requirement.

2.Main Memory Management: It is a huge array with word or byte.every word posses its own address.

1 files creation and deletion.

2.creation and deletion of directions.

3.assistance of primitives for operation of directions and files.

4.file mapping on to the ssecondary storage.

5.bavkup of files on the fixed storage media.

4.I\\O Systemk management: it secrets the quality of a particular hardware equipements from the user.device driver know the particular device to whom it was allocated.

5.secondary storage management:instructions and data is kept in secondary storage or cache to refer a running programm.it includes the disks and tapes.

1.handling the empty space found on secondary storage device.

2.Assing of space if the fresh files are there to write.

3.scheming the requests for acessing the memory.

.......................................................................................................................................................................4) The OS must hide the pecularities of I\\O Subsystems because it known only by the device driver i.e for whom it is assigned.

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5) 1.security is a kind of protection across the external threats.

2.security and protection are widely close terms but not similar.

3.security actions are to raise the level of protection.

......................................................................................................................................................................6) dumb terminal storage is perfomed by a mainframe.

processor is absent in dumbterminal.

computer utilizes the network services to accomplish users manipulations is client server.the aim of the computer is to enter ans show the data.