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Recent questions tagged operating-system

2 votes
2 answers
2701
GATE Overflow | Operating Systems | Test 1 | Question: 12
In a multi-user operating system, 20 requests are made to use a particular resource per hour, on average. The probability that no requests are made in 45 minutes is - $e^-{15}$ $e^{-5}$ $1 - e^{-5}$ $1-e^{-10}$
In a multi-user operating system, 20 requests are made to use a particular resource per hour, on average. The probability that no requests are made in 45 minutes is -$e^-...
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5 votes
1 answer
2706
GATE Overflow | Operating Systems | Test 1 | Question: 7
Which of the following page replacement schemes is the toughest to implement from a hardware point of view? LRU FIFO MRU All have equal complexity
Which of the following page replacement schemes is the toughest to implement from a hardware point of view?LRUFIFOMRUAll have equal complexity
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3 votes
1 answer
2710
GATE Overflow | Operating Systems | Test 1 | Question: 4
The size of the virtual memory in a computer system depends on the size of the data bus main memory address bus RAM
The size of the virtual memory in a computer system depends on the size of the data busmain memoryaddress busRAM
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4 votes
1 answer
2712
GATE Overflow | Operating Systems | Test 1 | Question: 1
Overlay is a part of an operating system a specific memory location a single contiguous memory that was used in the olden days for running large programs by swapping overloading the system with many user files
Overlay is a part of an operating system a specific memory location a single contiguous memory that was used in the olden days for running large programs by swappingove...
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2 votes
0 answers
2713
operating system - stack,heap,text,numerical
a process has 3 sections stack heap and text and if the size of the page table is 2 mb then on average amount of unused page space per process is?
a process has 3 sections stack heap and text and if the size of the page table is 2 mb then on average amount of unused page space per process is?
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2 votes
1 answer
2714
true false statment, i-node,FAT
Reading a random location in a big file is faster in i-node based file systems than in FAT file systems. True or False?
Reading a random location in a big file is faster in i-node based file systems than in FAT file systems.True or False?
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0 votes
1 answer
2715
file system-directory entry
which of the following is not contained in a directory entry of a file? a) file name and extension b) no of free blocks in the disk c) access control d) creation date
which of the following is not contained in a directory entry of a file?a) file name and extensionb) no of free blocks in the diskc) access controld) creation date
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2 votes
1 answer
2717
OS - Privileged,non-privileged concept,typical/crucial
can a non privileged instruction be executed in privileged mode?(like when returning from kernel to user mode) or is it necessary to make it a privileged instruction?
can a non privileged instruction be executed in privileged mode?(like when returning from kernel to user mode) or is it necessary to make it a privileged instruction?
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1 votes
1 answer
2720
UGC NET CSE | June 2011 | Part 2 | Question: 37
A file organization component VSAM file is Relative records data set Keyed sequential data set Entry sequential data set All of the above
A file organization component VSAM file isRelative records data setKeyed sequential data setEntry sequential data setAll of the above
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0 votes
1 answer
2721
UGC NET CSE | June 2011 | Part 2 | Question: 36
Block or Buffer caches are used to Improve disk performance Handle interrupts Increase the capacity of main memory Speed up main memory Read operations
Block or Buffer caches are used toImprove disk performanceHandle interruptsIncrease the capacity of main memorySpeed up main memory Read operations
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4 votes
1 answer
2722
UGC NET CSE | June 2011 | Part 2 | Question: 35
Which of the following can be accessed by transfer vector approach of linking ? External data segments External subroutine Data located in other procedure All of the above
Which of the following can be accessed by transfer vector approach of linking ?External data segmentsExternal subroutineData located in other procedureAll of the above
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1 votes
2 answers
2723
UGC NET CSE | June 2011 | Part 2 | Question: 32
A special software that is used to create a job queue is called Drive Spooler Interpreter Linkage editor
A special software that is used to create a job queue is calledDriveSpoolerInterpreterLinkage editor
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1 votes
1 answer
2724
UGC NET CSE | June 2011 | Part 2 | Question: 31
Object modules generated by assembler that contains unresolved external references are resolved for two or more object module by a/an Operating system Loader Linker Compiler
Object modules generated by assembler that contains unresolved external references are resolved for two or more object module by a/anOperating systemLoaderLinkerCompiler
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6 votes
3 answers
2727
UGC NET CSE | June 2011 | Part 2 | Question: 23
The number of disk accesses performed by insertion operation in B-tree of height $h$ is $0(1)$ $0(1gh)$ $0(h)$ None of these
The number of disk accesses performed by insertion operation in B-tree of height $h$ is$0(1)$$0(1gh)$$0(h)$None of these
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2 votes
1 answer
2728
Sector Interleaving - MCQs in CS - Timothy Williams
Sector interleaving in disks is done by a) the disk manufacturer b) the disk controller cord c) the os d) none of the above
Sector interleaving in disks is done bya) the disk manufacturerb) the disk controller cordc) the osd) none of the above
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2 votes
2 answers
2729
UGC NET CSE | December 2011 | Part 2 | Question: 30
Consider a logical address space of $8$ pages of $1024$ words mapped with memory of $32$ frames. How many bits are there in the physical address ? $9$ bits $11$ bits $13$ bits $15$ bits
Consider a logical address space of $8$ pages of $1024$ words mapped with memory of $32$ frames. How many bits are there in the physical address ?$9$ bits$11$ bits$13$ bi...
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