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What the difference among direct mapping associative mapping and autoassociative mapping?
Direct mappingA given Main Memory block can be mapped to one and only one Cache Memory line.It is Simple, Inexpensive, fastIt lacks mapping flexibilityAssociative mappingA block in the Main Memory can be mapped to any line in the Cache Memory available (not already occupied)It is slow, expensiveIt has mapping flexibility
The process of assigning memory addresses to programs is called?
memory mapping
What are the difference among direct mapping associative mapping and set associative mapping?
The differences among direct mapping and set-associative mapping :Direct mapping : Each line in main memory maps onto a single cache line.Set-associative : Each line in main memory maps onto a small (collection) set of cache line.Direct mapping : A memory block is mapped into a unique cache line, depending on the memory address of the respective block.Set-associative : A memory block is mapped into any of the line of a set. The set is determined by the memory address, but the line inside the set can be any one.dont knowyet
What are the differences among direct mapping associative mapping and set associative mapping?
The differences among direct mapping and set-associative mapping :Direct mapping : Each line in main memory maps onto a single cache line.Set-associative : Each line in main memory maps onto a small (collection) set of cache line.Direct mapping : A memory block is mapped into a unique cache line, depending on the memory address of the respective block.Set-associative : A memory block is mapped into any of the line of a set. The set is determined by the memory address, but the line inside the set can be any one.dont knowyet
44 The process of assigning memory addresses to programs is called?
memory mapping
What is the direct mapping cache memory?
it ia html
How mapping is done between cache memory and main memory?
Its simply done. By connecting many lines :p
Why is it not possible to enforse memory protection at compile time?
Memory protection cannot be enforced at compile time because it relies on runtime information about how memory is accessed and used by a program. The compiler does not have complete knowledge of the runtime environment, such as dynamic memory allocation, pointers, or the interactions between different modules. Additionally, certain behaviors, like buffer overflows or access violations, may only become apparent during execution. Thus, enforcing memory protection requires mechanisms that operate at runtime, such as operating system support and hardware features.
Three cache mapping techniques?
Three types of mapping procedures are there? (1) Associative Mapping-The fastest and most flexible cache organizations uses associative mapping. The associative memory stores both the address and content of memory word. This permits any location in catche to store word in main memory. (2) Direct Mapping-Associative memories are expesive compared to RAM's because of added logic associated with each cell. (3) Set Associative Mapping-It is a more general method that includes pure associative and direct mapping as special case. It is an improvement over the direct mapping organization in that each word of cache can store two or more words of memory under the same index address. Each data word is stored together with its tag and the number of tag data items in one word of cache is said to form a set. With Regards Veer Thakur Chandigarh
What does Microsoft Visual C plus plus Runtime Library mean?
The runtime library is a collection of routines that implements basic functionality of the platform. Routines such as I/O, memory control, startup, shutdown, common system functions, etc. are located in the runtime library.
Why a mapping from logical address to physical address and Explain the protocols?
A mapping from logical address to physical address is essential for memory management in computer systems, as it allows the operating system to abstract the physical memory layout from applications, enabling efficient memory allocation and protection. This mapping is typically achieved through mechanisms such as paging and segmentation, which break down memory into manageable units. Protocols involved in this process include the Memory Management Unit (MMU) protocols, which translate logical addresses generated by programs into physical addresses in RAM, and the use of page tables to keep track of the mapping. Additionally, virtual memory protocols allow systems to use disk space as an extension of RAM, further enhancing memory efficiency.
Differences among direct mapping associative mapping and set-associative mapping?
Direct mapping, associative mapping, and set-associative mapping are cache mapping techniques used in computer architecture. In direct mapping, each block of main memory maps to exactly one cache line, which can lead to conflicts if multiple blocks map to the same line. Associative mapping allows any block of memory to be placed in any cache line, providing greater flexibility but requiring more complex hardware for searching. Set-associative mapping combines both methods by dividing the cache into sets, where each set can contain multiple lines, allowing a block to be placed in any line within its designated set.
