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Spyware is stored in various places. Like the registry,files,bookmarks,favourites (user area).There could be memory resident spyware too.
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What are the three major activities of an operating system with regard to memory management?
1- keeping track of which parts of memory are currently being used and by whom.2- decide which process is to be loaded in memory when the space is available.3- allocate and deallocate memory space as needed.
What is demand paging in operating system?
It is a memory managermnet concept where the operating system copies the dats from the disk space to the main memory (RAM) only when is trying to access the page. it is like we have to attempt the page again, when the page fault has occured while trying to get the data.
State 3 major activities of an operating system in regard to secondary storage management?
Managing the free space available on the secondary-storage device.Allocation of storage space when new files have to be written.Scheduling the requests for memory access.
What are 3 major activities of an os regard to memory management?
1.keeping track of which parts of memory are currently being used and by whom. 2.decide which process is to be loaded in memory when the space is available. 3.allocate and deallocate memory space as needed.
Difference between internal fragmentation and external fragmentation in operating system?
Fragmentation occurs in a dynamic memory allocation system when many of the free blocks are too small to satisfy any request. External Fragmentation: External Fragmentation happens when a dynamic memory allocation algorithm allocates some memory and a small piece is left over that cannot be effectively used. If too much external fragmentation occurs, the amount of usable memory is drastically reduced. Total memory space exists to satisfy a request, but it is not contiguous. Internal Fragmentation: Internal fragmentation is the space wasted inside of allocated memory blocks because of restriction on the allowed sizes of allocated blocks. Allocated memory may be slightly larger than requested memory; this size difference is memory internal to a partition, but not being used
Can you get unlimited blocks of space for the system memory on your DSi and 3DS?
No, you cannot get unlimited space for the system memory for the DSi and 3DS. However, if you manage the space well, you can efficiently use your space to play the games you want. The DSi and 3DS can read SD cards so you can get more space for your console. DSiware games, however, are only playable when stored in the system memory so DSiware games that you are not playing can be moved to the SD for additional space (but will not be playable). 3DS downloadable games and games from the Nintendo eShop (excluding DSiware games) are playable from the SD card and will not affect the system memory space. Additional content (such as Streetpass data, DLC, and add on content) will also be stored on the SD card.
What is worst fit algorithm?
The worst fit algorithm is a means by which an operating system can choose which space in memory to store information (this algorithm can also be used for allocating hard disk space). The algorithm searches for free-space in memory in which it can store the desired information. The algorithm selects the largest possible free space that the information can be stored on (i.e., that is bigger than the information needing to be stored) and stores it there. This is directly opposed to the best fit algorithm which searches the memory in much the same way as before, only instead chooses the open memory space which is the smallest available which the information can be stored in (i.e., that is bigger than the information needing to be stored).
What is worst -fit?
The worst fit algorithm is a means by which an operating system can choose which space in memory to store information (this algorithm can also be used for allocating hard disk space). The algorithm searches for free-space in memory in which it can store the desired information. The algorithm selects the largest possible free space that the information can be stored on (i.e., that is bigger than the information needing to be stored) and stores it there. This is directly opposed to the best fit algorithm which searches the memory in much the same way as before, only instead chooses the open memory space which is the smallest available which the information can be stored in (i.e., that is bigger than the information needing to be stored).
Why are computers faster when you first buy them?
Because programmes aren't installed and you don't have anything stored on the computer which takes up space on the system/hard drive....when you're running out of space your computer will run slower, or if there is a virus or spyware, these can also cause it to run slower.
Where the variables are stored in the computer?
Variable stored in the memory block inside the RAM. whenever we declare a variable it would take space in main memory and consume it's size from RAM.
What is the memory on computer?
A type of temporary data storage unit, which is very fast and can be accessed quick. It is used by operating system and programs. Data stored in memory is lost on power down.
How much space is reserved for virtual memory on different computers?
The space reserved for virtual memory varies on different computers. It depends on the operating system in use and how much system memory is available.
What is the difference between swap and virtual memory?
Swap slices are used as virtual memory storage areas when the system does not have enough physical memory to handle current processes. The virtual memory system maps physical copies of files on disk to virtual addresses in memory. Physical memory pages which contain the data for these mappings can be backed by regular files in the file system, or by swap space. If the memory is backed by swap space it is referred to as anonymous memory because there is no identity assigned to the disk space backing the memory.
What is deffernce between virtual and physical memory?
The difference between virtual and physical memory is that virtual memory refers to memory space while physical memory are chips like RAM. The memory space for virtual memory is made by operating system when there is insufficient physical memory.
What is the extended memory space on a computer?
Memory above 1024K used in a DOS or Windows 9x/Me system.
Where the local variables will be stored?
When you declare a variable and it's data type in a function, it is stored in the specific space for memory allocated by the variable type identifier known as the "stack."
In paged system Can the logical address space b larger than physical address space?
Yes. This is the fundamental premise of paged or virtual memory - that you can have more logical memory than physical memory.
