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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.
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Compare paging with segmentation with respect to the amount of memory required by the address translation structures in order to convert virtual addresses to physical addresses?
Paging requires more memory overhead to maintain the translation structures. Segmentation requires just two registers per segment: one to maintain the base of the segment and the other to maintain the extent of the segment. Paging on the other hand requires one entry per page, and this entry provides the physical address in which the page is located.
The loci method is a memory technique that involves?
associating objects or ideas with physical locations.
What differences arethere between sensory memory and short term memory?
what is the difference between short term memory, long term memory and sensory memory with short term memory information can be remembered 2o sec after seeing touching smelling ect. the information. the information can also be remembered as long as you are thinking about it sensory memory can only be remembered if the object is in front of you. such as a stranger, you can remember then but as soon as the walk away you can remember what they were wearing how they smelled ect... long term memory can be remembered through out a life time
What are difference between sensory memory and long term memory?
Sensory memory is when you use your senses to remember stuff (smell, hear, taste, touch, and see).Long term memory is information stored in the brain and retrievable over a long period of time.
Consider a logical address space with 4 pages of 1024 bytes per pageeach mapped onto a physical memory of 64 frames. how many bits are there in logical address?
4 pages -> 2^2 bits 1024 bytes -> 2^10 bits 64 frames -> 2^6 bits Therefore: Logical memory = 2+10=12 bits Physical memory = 10 +6 =16 bits
Virtual memory refers to your computers swapping of data currently in use between what types of memory?
explain the logical& physical memory
Under Windows 2000XP physical memory and virtual memory are both managed by what?
Virtual Memory Manager
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 the difference between bitween pagefile and virtual memory?
pagefile is the virtual memory
Why is physical memory better than virtual memory?
Physical memory (in a computer) is 'better' than virtual memory because it is much faster (and speed is usually the main concern in this subject area). Physical memory (or RAM) is where the programs and variables are stored whilst they are working. Virtual memory is only used when the computer runs out of physical memory. Virtual memory is just one or more files saved on a hard disk. Access to the hard disk is much slower than access to the physical memory.
What is the formula to find the Virtual memory page table?
1.5 of physical memory
What is the difference between virtual memory and physical memory?
I think so this will help you Virtual memory does not physically exist while physical memory does. Where there is not enough physical memory available for the required application, the application and its data are staged through the physical memory with the excess mapped onto a section of hard disk drive. Using this technique the memory appears to be bigger that it actually is (although it is slowed down by the staging process). The bit on the disk is called the virtual memory.
The virtual memory addressing capability of 80386 is?
NONE! The 80186 was an advanced version of the 8086 but did not include support for virtual memory. It had a 64K physical address space. The 80286 was the first Intel CPU to support virtual memory but it's capabilities were limited.
Under Windows 2000XP physical memory and virtual memory are managed by what application?
Physical memory, as with all computer resources, is managed by the system. Applications access virtual memory exclusively, no exceptions, ever. Physical memory (RAM), the pagefile, and many other files on the hardisk make up the virtual memory system. This system has been extensively researched and tested and it usually performs very well. Virtual memory is VERY complex, and the designers understand it better than you do.
Differentiate between the physical virtual and cache memory Explain briefly?
Virtual memory is a type of memory that is allocated by the operating system and is used to speed up operations. Cache memory is RAM that the CPU can access faster than regular ram which is considered physical memory. When the CPU is looking for data, it checks the cache memory first, recently used data will still be in the cache. If it does not find it there, it moves on to use the physical memory. Anytime a program or file is opened, it is first loaded into RAM (physical memory).
Why you need memory physical address and memory logical address?
Physical Address refers to Storage location on Physical Memory wheres Logical Addressing is used by Memory Managing Programs to refers addresses from Physical Memory and Virtual Memory.
What is Virtual memory size if physical memory size is 1024MB?
Windows will automatically set your virtual memory size. It all depends on how much free space there is on your hard drive. Your physical memory is your RAM. 1GB of RAM is the same as 1024MB.
