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When we say a system is a multiprogramming system?
Multiprogramming is collecting several jobs in a job pool and the OS selects the job from the pool so that the CPU has one job to execute , in case of any IO request for the job in execution the CPU switches to another job here switching is less compared to multitasking.So a computer system which allows such type of switching in between jobs is called a multiprogramming system. Please make note that multitasking is done by user but multiprogramming is done by operating system only.
Diffirence between multiprogamming and multitasking?
Multitasking: The ability to execute more than one task at the same time is called multitasking. It involves only one CPU. Multiprogramming: The ability to execute more than one task but not simultaneously is called multiprogramming.
What stores the data which tells the computer how to load the operating system when it is switched on or rebooted?
A computer boots up by first running a program in Read Only Memory (ROM) that is built into the computer's motherboard. This program is called the Power-On Self Test (POST) and Basic Input/Output System (BIOS). After checking the hardware, the program consults a nonvolatile parameter memory (called "PRAM" or "CMOS" for historical reasons) that acts like Flash memory in that it can be changed but retains its information without power. From this parameter memory, the program in ROM decides where to look for the next step.Typically the next step is to read the first block ("boot block") off of the first hard drive into memory and run the program in it. Other options are to read the first block off the floppy, the CD-ROM, or from the network.In the hard drive situation, the program in the boot block figures out which disk partition is the active partition, loads the boot block from that partition into memory, and runs that program. This allows you to have different operating systems on different partitions and choose which one to run by changing active partitions.The second boot block program loads a more elaborate loader program from the disk, which in turn loads the operating system (finally!).Most PCs have a "BIOS screen" that you can get to by a key sequence (F1 or ESC) during the boot process. This BIOS screen allows you to change the nonvolatile parameter memory; however, it is possible to make changes that will keep your computer from booting, so be careful. For example, bad values in "RAM Timings" will cause serious problems.
What is the memory limitation for a 32-bit operating system?
A 32-bit OS can only address up to 4GB of memory.
Where is the operating system of a cellphone stored?
circut board - the read-only memory (ROM)
What is Partition Memory?
The first attempt to allow for multiprogramming used fixed partitions (also called static partitions) within the main memory-one partition for each job. Because the size of each partition was designated when the system was powered on, each partition could only be reconfigured when the computer system was shut down, reconfigured, and restarted. Thus, once the system was in operation the partition sizes remained static.
What is fixed partition memory?
The first attempt to allow for multiprogramming used fixed partitions (also called static partitions) within the main memory-one partition for each job. Because the size of each partition was designated when the system was powered on, each partition could only be reconfigured when the computer system was shut down, reconfigured, and restarted. Thus, once the system was in operation the partition sizes remained static.
What is difference between uni-programming and multiprogramming?
multiprogramming or multitasking means more than one program can execute at the same time. It is the allocation of a computer system and its resources to more than one application at the same time. However in uni-programming you can have only one program running at any point in time.
Is it Possible to support time sharing without using multiprogramming?
Yes, it is possible to support time-sharing without multiprogramming, though it would be highly inefficient. Time-sharing systems can allocate CPU time to a single process in a way that allows multiple users to interact with the system simultaneously, but without multiprogramming, only one user process would execute at a time. This approach would lead to significant idle time and poor resource utilization, undermining the benefits of a time-sharing system. Ultimately, multiprogramming enhances the efficiency and responsiveness of time-sharing by allowing multiple processes to coexist and utilize CPU time effectively.
What can only be created using the free space inside an extended partition?
Logical Partition
What does C D ROM or read only memory mean?
CD stands for compact disc. ROM means it is not possible to write to the disc/memory. CD stands for compact disc. ROM means it is not possible to write to the disc/memory.
Is it possible to have a memory problem in which the only thing you forget about is people but not places or things?
yeah i have had serious memory problems and i don't do drugs and im not old i only remember certain things but not people
How do restore the computer back to the factory pont?
When the computer is booting up, press F11 and Ctrl over and over. That takes you to a screen that can guide you from there You cant restore every computer. It has to have recovery partition. And F11 and CTRL only works for Dell (I could be wrong, that's from memory) whereas Acer is CTRL/ALT F10 (again that's from memory). Different maker's use different key combinations, you will have to do a bit of googling. And again, this will only work *if* you have a recovery partition.
What is a swap partition in Linux?
When you run out of memory, some of the data is stored in SWAP, so memory can be used for something else. Also, some files might be saved to swap, so it takes less time to find and read them. And when you hibernate your PC, the contents of RAM get saved onto the SWAP partition, but this only works when your SWAP is larger than amount of your RAM and amount of SWAP already used combined.
Maximum number of primary partitions on XP?
Wen you are talking about Partitions, you aren't talking about Windows, you are talking about the HDD(Hard Drive Disk). this is a "thing" on the HDD, not Windows. theoretically, you can have as many Partitions as you would like, provided you have the memory for it. Lets say you make a partition that is 5GB, and you install Windows XP on that Partition. Also, your HDD is 57GB. Windows cannot use any memory outside of that Partition. This means that, although you have a 57GB HDD, Windows can only use the 5GB you assigned it. A Partition is sort of like an HDD on an HDD. It can become very confusing. I hope tis helps.
When we say a system is a multiprogramming system?
Multiprogramming is collecting several jobs in a job pool and the OS selects the job from the pool so that the CPU has one job to execute , in case of any IO request for the job in execution the CPU switches to another job here switching is less compared to multitasking.So a computer system which allows such type of switching in between jobs is called a multiprogramming system. Please make note that multitasking is done by user but multiprogramming is done by operating system only.
What is the main reason the default location of the paging file is the boot partition?
Because many systems only have one partition.
