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External fragmentation refers to the division of free storage into small pieces over a period of time, due to an inefficient memory allocation algorithm, resulting in the lack of sufficient storage for another program because these small pieces are not contiguous.
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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
What does a computer's operating system do?
A computer's operating system can be compared to an executive manager; it manages all of the hardware and software. It allows the user to access and modify files, use external devices, and run software.
Is it possible to install an operating system on external storage device without installing internal hard drive?
if it is an external SATA drive then yes, otherwise it is not suggested and rarely works.
What is solution of external fragmentation?
External fragmentation is solved by any three methods:- 1.compaction:- attacks the problem of external fragmentation by moving all the allocated memory blocks into single unit by combining all free memory holes. 2.garbage collection:- it collects all the memory which is inaccessible and return them as a free memory. 3.paging:-breaking up physical memory into fixed size blocks and than filling these blocks by logical memory of same size.
Explain all types of operating system with diagram?
There are basically four types of operating systems. They include Batch Operating System, Multiprogramming Operating System, Network Operating System and Distributed Operating System.
Is relocatable Dynamic Memory external or internal fragmentation?
external fragmentation
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
What type of fragmentation is there in paging and why?
external fragmentation use in paging
Explain internal external fragmentation give the best suted solution to the fragmentation?
explain fragmentation?
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!!!
Why is it important to perform a de-fragmentation after installing a Windows operating system?
It is not at all important to do a defrag if you just installed an operating system. It is usefull when you have removed software or just before installing new software.
Explain terminoligy used in computer defragmenter?
The more you change things on your computer the more fragmentation of your computer memory you are making. here are some computer operating systems that will automatically reduce the amount of fragmentation you will have. Most computers will still have some fragmentation of files on the hard disk. You have, as part of the operating system of your computer the ability to 'tidy up', or remove fragmentation mostly running the operating system defrag program. This will mean your computer will put everything you use most at the easiest to access end of your memory, this means that the computer works as fast as it can
Can you use external CD drive?
Yes, if your computer operating system will recognise it as an external storage device
Can a mac execute software that been installed by the PC on the external drive?
Software is written to use the facilities provided by a particular operating system. A Mac's default operating system is Mac OS X. A Mac can also run the Windows operating system. If the Mac has the required operating system to support the software on the external drive then it can run it.
What is user memory for operating system?
A user memory for an operating system are the devices in which data is stored. These devices can be built into the computer, such as the hard drive, or they can be an external device, such as a USB pen drive or external hard drive.
What is the difference between internal and external fragmentation in OS?
Internal Fragmentation is the area in a region or a page that is not used by the job occupying that region or page. This space is unavailable for use by the system until that job is finished and the page or region is released.
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
