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Recent questions tagged memory-management

6 votes
2 answers
421
ISRO-2013-56
In a $64$- bit machine, with $2$ GB RAM, and $8$ KB page size, how many entries will be there in the page table if its is inverted? $2^{18}$ $2^{20}$ $2^{33}$ $2^{51}$
In a $64$- bit machine, with $2$ GB RAM, and $8$ KB page size, how many entries will be there in the page table if its is inverted?$2^{18}$$2^{20}$$2^{33}$$2^{51}$
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5 votes
2 answers
422
ISRO2013-55
Consider a logical address space of $8$ pages of $1024$ words each, mapped onto a physical memory of $32$ frames. How many bits are there in the physical address and logical address respectively? $5, 3$ $10, 10$ $15, 13$ $15, 15$
Consider a logical address space of $8$ pages of $1024$ words each, mapped onto a physical memory of $32$ frames. How many bits are there in the physical address and logi...
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4 votes
6 answers
423
ISRO-2013-54
Which of the following are the likely causes of thrashing? Page size was very small. There are too many users connected to the system. Least recently used policy is used for page replacement. First in First out policy is used for page replacement.
Which of the following are the likely causes of thrashing?Page size was very small.There are too many users connected to the system.Least recently used policy is used for...
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5 votes
2 answers
424
total address space
For a computer address,if we reduce the no of bits by 2 and if we double the addressability then total address space will be 1) Doubled 2) halved 3) Remain Same 4) None What is meant by Addressablity???
For a computer address,if we reduce the no of bits by 2 and if we double the addressability then total address space will be1) Doubled 2) halved 3) Remain Same 4) NoneWh...
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0 votes
1 answer
427
memory management
Consider a direct mapped cache of size 16 KB and block size is 4 words. The word length is 16 bits. Find the number of bits needed for cache indexing if CPU generates 32 bit address
Consider a direct mapped cache of size 16 KB and block size is 4 words. The word length is 16 bits. Find the number of bits needed for cache indexing if CPU generates 32 ...
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4 votes
1 answer
428
What is the sequence of memory access/operations when TLB, 2-level Page Table, Cache and Memory are in picture?
My understanding and doubts are First of all TLB is accessed.If there is TLB hit, do we consider this asHit for 1-level PT only and search the TLB again for 2-level PT, o...
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6 votes
3 answers
429
Memory management and Virtual memory
Which page replacement policy sometimes leads to more page faults when size of memory is increased? A] Optimal B] LRU C] FIFO D] None of these.
Which page replacement policy sometimes leads to more page faults when size of memory is increased?A] OptimalB] LRUC] FIFOD] None of these.
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0 votes
1 answer
430
Memory management and Virtual memory
Match the pairs in the following question Pair - 1 A. Virtual Memory B. Shared Memory C. Look-ahead buffer D. Look-aside buffer Pair - 2 P. Temporal locality Q. Spatial locality R. Address translation S. Mutual exclusion
Match the pairs in the following questionPair - 1A. Virtual MemoryB. Shared MemoryC. Look-ahead bufferD. Look-aside bufferPair - 2P. Temporal localityQ. Spatial localityR...
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1 votes
1 answer
431
How to calculate Physical Address corresponding to Logical Address
Represent the sentence "We are IT students" in physical memory if page size is 5 characters and the entries in page table are- 0 6 1 5 2 7 3 10 Assume physical memory size to be 55 characters
Represent the sentence "We are IT students" in physical memory if page size is 5 characters and the entries in page table are-061527310Assume physical memory size to be 5...
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2 votes
6 answers
432
Self doubt
Does fixed size partitioning suffer from external fragmentation?
Does fixed size partitioning suffer from external fragmentation?
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2 votes
1 answer
433
Calculating size of page table
Given answer: A. Please explain
Given answer: A. Please explain
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1 votes
3 answers
434
Finding maximum size of file
Given answer: 128 Please explain how to solve this problem
Given answer: 128Please explain how to solve this problem
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1 votes
1 answer
436
page table
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8 votes
1 answer
437
Segmented paging and paged segmentation
explain similarities and dismilarities between Segmented paging and paged segmentation
explain similarities and dismilarities between Segmented paging and paged segmentation
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1 votes
1 answer
441
File System
Given the disk Capacity of 30 MB has block size 512 bytes and block/cluster is 4, the number of entries require in the FAT table is? a) 30*2^11 b) 30*2^20 c) 30*2^31 d) 30*2^9
Given the disk Capacity of 30 MB has block size 512 bytes and block/cluster is 4, the number of entries require in the FAT table is?a) 30*2^11b) 30*2^20c) 30*2^31d) 30*2^...
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0 votes
1 answer
443
Virtual Memory
What is the maximum process size that we can have in a 32 bit operating system?How is that limit calculated.
What is the maximum process size that we can have in a 32 bit operating system?How is that limit calculated.
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1 votes
1 answer
447
Calculating total external fragmentation
Please check whether the given explanation is correct or not.
Please check whether the given explanation is correct or not.
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2 votes
1 answer
449
Can somebody explain me internal and external fragmentation in detail?
I always get confused between internal and external fragmentation.Is there any relation between them?pls explain in detail
I always get confused between internal and external fragmentation.Is there any relation between them?pls explain in detail
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