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Compare Contiguous memory allocation with internal fragmentation?

in early, computer system has contiguous memory allocation,each process is allocated in a single contiguous(together) memory!!(allocating into memory addresses one by one,)it has tackled memory fragmentation(both internal and external). not allocating for a fixed size memory block.so no internal fragmentation, allocating contiguously ,so no external fragmentation!!!


Definition of internal fragmentation and external fragmentation?

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


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


Give one reason you should make the paging file maximum size the same as the paging file initial size?

In order to prevent page file fragmentation.


What type of fragmentation is caused by relocatable dynamic?

Relocatable dynamic fragmentation is caused by the repeated allocation and deallocation of memory blocks of varying sizes, leading to small gaps that may not be reused efficiently due to mismatches in size requirements. Over time, this can result in a high level of fragmentation and a decrease in memory utilization efficiency.


How can you make the revisited web page display faster?

Increase History Size


What are the advantages AND disadvantages of paging and segmentation?

Paging Paging works by dividing memory into small pieces of memory (frames) and then logically divides the program into same-size pieces (pages). Paging Advantages Easy to allocated from free list of frames -Physical memory is allocated from free list of frames -External Fragmentation is not a problem Easy to "page out" chunks of programs -All Chunks are the same size (page size) -Use valid bit to detect references to "paged-out" pages Paging Disadvantages Can Still have internal fragmentation -process may not use memory in exact multiples of pages Memory reference overhead -2 references per address lookup Memory required to hold page tables can be large


Why is that font size increasing while refreshing the page?

Font size cannot increase automatically. You should have increased it manually.


What is the difference between fixed and variable partition?

in the fixed partition the partition is once allocated is fixed. in fixed partition more memory wastage because of internal & external fragmentation.... in variable partition when a process comes then according to need of process the size of memory is allocated to the process


Advantages of segmentation over paging?

Advantages of segmentation over paging: Speed. Reloading segment registers to change address spaces is much faster than switching page tables. Segment descriptor tables consume less memory than page tables. x86 page table entries do not have an 'Executable' bit. With segmentation, you can make a region of memory executable (code) or not (data). Segment size can be byte-granular (size 1 byte to 1Meg in units of 1 byte); pages are always page-granular (size 4K to 4Gig in units of 4K). Segmentation lets you make the segment as large as necessary, with no excess (there is no internal fragmentation).


How do you get to page setup on office word 2007?

the page setup is the same as the page layout or the 3rd bar down. if u wanna increase the page size, then go to the bottom right hand corner.


How can you decrease page size in Google Chrome?

You can click the Options Button on the most right at the toolbar. It looks like a spanner. Click on it and decrease or increase the page size on the 'Zoom' tab under the Options.