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Recent questions tagged operating-system

1 votes
0 answers
2191
OS: Function of Dispatcher
Q1) Is it true that dispatcher always have one process to dispatch on to the cpu. Q2) Dispatcher function - "Jumping to the proper location in the user program to reatart that program". What does it mean?
Q1) Is it true that dispatcher always have one process to dispatch on to the cpu.Q2) Dispatcher function - "Jumping to the proper location in the user program to reatart ...
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2 votes
1 answer
2194
Deadlock Conditions
Q1> What are necessary and what are sufficient conditions for Deadlock? Q2> What is the difference between deadlock preventions, deadlock avoidance, and deadlock detection?
Q1 What are necessary and what are sufficient conditions for Deadlock?Q2 What is the difference between deadlock preventions, deadlock avoidance, and deadlock detection?
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1 votes
0 answers
2195
Self doubt
In the case of multilevel paging, only the innermost page table contains the frame number corresponding to page number whereas the other high-level page table contains the base (or starting) physical address of the next lower level page table to which they point???
In the case of multilevel paging, only the innermost page table contains the frame number corresponding to page number whereas the other high-level page table contains th...
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5 votes
1 answer
2198
SPU Scheduling
What is the correct sequence of the functions -Scheduling, dispatching, and context switching.
What is the correct sequence of the functions -Scheduling, dispatching, and context switching.
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4 votes
2 answers
2199
Context switches in round robin
Here what are the number of context switches ? Is it 5 or 6? Do we consider context switch before P1 (i.e during the start) ?
Here what are the number of context switches ? Is it 5 or 6? Do we consider context switch before P1 (i.e during the start) ?
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1 votes
1 answer
2200
Number of disk block accesses.
A file system uses continuous allocation to store data. What is the number of disk block accesses required to fetch n blocks of data ? Is it 1 or n?
A file system uses continuous allocation to store data. What is the number of disk block accesses required to fetch n blocks of data ? Is it 1 or n?
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1 votes
1 answer
2201
Basic Optimal page replacement policy doubt.
Consider page references, 1,2,3,5,2,3,4 and number of frames = 3. In the end will the frame contain 4,2,3 or 5,4,3 ?
Consider page references, 1,2,3,5,2,3,4 and number of frames = 3.In the end will the frame contain 4,2,3 or 5,4,3 ?
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2 votes
1 answer
2202
Self Doubt
Order the following Disk Scheduling Algorithm on the basis of throughput FCFS, SCAN, C-SCAN, SSTF, LOOK, C-LOOK.
Order the following Disk Scheduling Algorithm on the basis of throughputFCFS, SCAN, C-SCAN, SSTF, LOOK, C-LOOK.
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2 votes
1 answer
2203
Memory Management
What is the difference between the functions performed in compile time and functions performed in link time?
What is the difference between the functions performed in compile time and functions performed in link time?
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2 votes
1 answer
2204
Memory Management
What is the difference between Physical Address, Virtual Address and Absolute Address?
What is the difference between Physical Address, Virtual Address and Absolute Address?
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1 votes
0 answers
2206
OperatingSystem-SecurityQuestions
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1 votes
0 answers
2207
CPU Utilization
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1 votes
0 answers
2208
TestSeries2018Ace
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8 votes
1 answer
2209
PAGING
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1 votes
0 answers
2210
System
The number of bits for limit, segment base and type in a 32 bit segment descriptor is
The number of bits for limit, segment base and type in a 32 bit segment descriptor is
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2 votes
1 answer
2212
Word or byte
Let the number of bits required to address a memory word be 25. Each word is of 16 bits. Number of words in the memory is ________. Number of bytes in the memory denoted as ____________ Number of bits to address __________. Where W denotes word and B denotes bytes.
Let the number of bits required to address a memory word be 25. Each word is of 16 bits.Number of words in the memory is ________.Number of bytes in the memory denoted a...
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2 votes
0 answers
2213
x86 problem
1 point Consider a system using 2-level paging and the virtual address is 38 bits. The most significant 12 bit are used to index the page directory and next 14 bits index the page table. Each entry in both level is 4 Bytes. How large are the page frames ? Size of page tables?
1 pointConsider a system using 2-level paging and the virtual address is 38 bits. The most significant 12 bit are used to index the page directory and next 14 bits index ...
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3 votes
2 answers
2214
Paging Operating Systems
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2 votes
1 answer
2215
Related to page frame
n a 32 bit processor the virtual address is 22 bit:12 bit(Table index : Offset). What is the size of the page frame and the process page table assuming that each entry in the page table is 4 Bytes?
n a 32 bit processor the virtual address is 22 bit:12 bit(Table index : Offset). What is the size of the page frame and the process page table assuming that each entry in...
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4 votes
2 answers
2216
Self Doubt
Whether the following statement is true or false?? "The OS maintains scheduling and accounting information for each thread"
Whether the following statement is true or false??"The OS maintains scheduling and accounting information for each thread"
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1 votes
2 answers
2217
GATE 2009 33
Is Spin Lock in TSL a kind of a deadlock? Or we can not consider it a deadlock at all?
Is Spin Lock in TSL a kind of a deadlock? Or we can not consider it a deadlock at all?
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2 votes
1 answer
2219
operating system
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