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Recent questions tagged memory-management
2
votes
3
answers
451
Memory management
If page fault service time is 50 milli second and memory access time is 100 ns, then what will be EMAT, if the probability of page fault is $p$ ? a) $500000 + 100p$ ns b) $100 + 500000p $ ns c) $10^{-7} - 5 p\times 10^{-2}$ seconds d) $10^{-7} + 49.9p \times 10^{-3}$ seconds
priti sharma
asked
in
Operating System
Oct 14, 2015
by
priti sharma
1.7k
views
operating-system
memory-management
1
vote
2
answers
452
Memory management
On a system using fixed partition with sizes 2^8, 2^16, 2^24, 2^32 and 2 ^ 64. How many bits must the limit register have ? a) 16 bits b)24 bits c)32 bits d) 64 bits
priti sharma
asked
in
Operating System
Oct 14, 2015
by
priti sharma
4.2k
views
memory-management
1
vote
2
answers
453
FIFO belady anamoly
Is it always true that FIFO will suffer from Belady Anamoly when i increase the frame number allocate from k to k + 1 .or it depends upon the reference string also ?
priti sharma
asked
in
Operating System
Oct 14, 2015
by
priti sharma
528
views
memory-management
2
votes
1
answer
454
Memory Management
Consider a system using a sengmented paging architecture. The segment is divided into 8k pages each of size 2k words . The segement table is divided into 256 k pages each of size 512 words. The page table entry size requires 64 bits . the frame number requires 22 bits then calculate logical address (LA) a) 51 bits b) 61 bits c) 33 bits d) 64 bits
priti sharma
asked
in
Operating System
Oct 14, 2015
by
priti sharma
1.6k
views
memory-management
operating-system
3
votes
1
answer
455
Memory managemennt
A certain computer system has the physical address space as 216 bytes . And consists of 2byte page table entries . Assume that each page table entry contain (beside other information ) 1 bit for valid , 3 bit for protection and 1 bit for dirty . How many bits are available in ... aging information for the page ? Assume that the page size is 512 bytes ? a) 3 b) 4 c) 5 d) 6
priti sharma
asked
in
Operating System
Oct 14, 2015
by
priti sharma
664
views
memory-management
1
vote
1
answer
456
Memory management
In a 32 bit machin we divide the VA into 4 segments 10bit ---8 bit ---6 bit --8 bit . We use a 3 level page such that first 10 bit are used for the first level and so on . then what is size of a page table for a process that has a address 0 ? a 4096 bytes b 4274 bytes c 4608 bytes d 2148 bytes
priti sharma
asked
in
Operating System
Oct 14, 2015
by
priti sharma
731
views
memory-management
7
votes
3
answers
457
ISRO2015-62
The minimum time delay between the initiation of two independent memory operations is called Access time Cycle time Rotational time Latency time
ajit
asked
in
CO and Architecture
Oct 12, 2015
by
ajit
6.8k
views
isro2015
co-and-architecture
memory-management
1
vote
3
answers
458
Which blocksize is considered for transfering words from mem to cache incase miss if blocksize of memory & cache differ?
jagadeesha kanihal
asked
in
CO and Architecture
Sep 30, 2015
by
jagadeesha kanihal
763
views
cache-memory
co-and-architecture
memory-management
0
votes
3
answers
459
No. of bits in physical and logical address space
Is it possible to have different number of pages and frames or they need to be equal in number?
Shefali
asked
in
Operating System
Aug 8, 2015
by
Shefali
9.0k
views
memory-management
29
votes
3
answers
460
GATE CSE 2015 Set 2 | Question: 30
Consider $6$ memory partitions of sizes $200$ $\text{KB}$, $400$ $\text{KB}$, $600$ $\text{KB}$, $500$ $\text{KB}$, $300$ $\text{KB}$and $250$ $\text{KB}$, where $\text{KB}$refers to $\text{kilobyte}$. These partitions need to be allotted to four processes of ... and $250$ $\text{KB}$ $250$ $\text{KB}$ and $300$ $\text{KB}$ $300$ $\text{KB}$ and $400$ $\text{KB}$
go_editor
asked
in
Operating System
Feb 12, 2015
by
go_editor
7.2k
views
gatecse-2015-set2
operating-system
memory-management
easy
0
votes
1
answer
461
why is there a difference in the execution
i am doing strcpy from a larger string into a relatively smaller string using two ways.According to me both the methods allocate space statically(as i am not using any malloc or calloc in either of my cases). but still method1 gives me segementation fault ... , b); cout << "all ok"; } catch (exception e) { cout << "error"; }
sumit kumar
asked
in
Programming in C
Nov 11, 2014
by
sumit kumar
655
views
programming-in-c
programming
memory-management
68
votes
6
answers
462
GATE IT 2006 | Question: 56
For each of the four processes $P_1, P_2, P_3,$ and $P_4$. The total size in kilobytes $(KB)$ ... $\text{S < P < T}$ $\text{S < T < P}$ $\text{T < S < P}$
Ishrat Jahan
asked
in
Operating System
Nov 1, 2014
by
Ishrat Jahan
28.9k
views
gateit-2006
operating-system
memory-management
difficult
54
votes
7
answers
463
GATE IT 2007 | Question: 11
Let a memory have four free blocks of sizes $4k$, $8k$, $20k$, $2k$ ... $J7$ will be completed will be $16$ $19$ $20$ $37$
Ishrat Jahan
asked
in
Operating System
Oct 29, 2014
by
Ishrat Jahan
19.3k
views
gateit-2007
operating-system
memory-management
normal
45
votes
5
answers
464
GATE CSE 1996 | Question: 2.18
A $1000$ $\text{Kbyte}$ memory is managed using variable partitions but no compaction. It currently has two partitions of sizes $200$ $\text{Kbyte}$ and $260$ $\text{Kbyte}$ respectively. The smallest allocation request in $\text{Kbyte}$ that could be denied is for $151$ $181$ $231$ $541$
Kathleen
asked
in
Operating System
Oct 9, 2014
by
Kathleen
20.8k
views
gate1996
operating-system
memory-management
normal
21
votes
3
answers
465
GATE CSE 1995 | Question: 5
A computer installation has $1000k$ of main memory. The jobs arrive and finish in the following sequences. Job 1 requiring 200k arrives Job 2 requiring 350k arrives Job 3 requiring 300k arrives Job 1 finishes Job 4 requiring 120k ... arrives Draw the memory allocation table using Best Fit and First Fit algorithms. Which algorithm performs better for this sequence?
Kathleen
asked
in
Operating System
Oct 8, 2014
by
Kathleen
7.8k
views
gate1995
operating-system
memory-management
normal
descriptive
72
votes
6
answers
466
GATE CSE 2014 Set 2 | Question: 55
Consider the main memory system that consists of $8$ memory modules attached to the system bus, which is one word wide. When a write request is made, the bus is occupied for $100$ nanoseconds (ns) by the data, address, and control signals. ... bus at any time. The maximum number of stores (of one word each) that can be initiated in $1$ millisecond is ________
go_editor
asked
in
Operating System
Sep 28, 2014
by
go_editor
26.8k
views
gatecse-2014-set2
operating-system
memory-management
numerical-answers
normal
1
vote
1
answer
467
Fragmentation is
Fragmentation is a. dividing the secondary memory into equal sized fragments b. dividing the main memory into equal size fragments c. fragments of memory world used in a page d. fragments of memory words unused in a page. Please explain.
Keith Kr
asked
in
Operating System
Sep 26, 2014
by
Keith Kr
9.0k
views
operating-system
memory-management
26
votes
4
answers
468
GATE CSE 1998 | Question: 2.16
The overlay tree for a program is as shown below: What will be the size of the partition (in physical memory) required to load (and run) this program? $\text{12 KB}$ $\text{14 KB}$ $\text{10 KB}$ $\text{8 KB}$
Kathleen
asked
in
Operating System
Sep 25, 2014
by
Kathleen
8.2k
views
gate1998
operating-system
normal
memory-management
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