Computer Science Questions
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Consider an i-node which contains 10 direct addresses of 4 bytes each and all disk blocks are 1 KB. Also consider that the i-node contains an additional "single and double indirect address" that is used for containing more disk block addresses. What is the largest possible file? *0/165536 KB10 KB 65802 KB266 KB
Each process is associated with _________ *1/1address memory, linker, compiler, etcall of the othersaddress space, set of resources, registers, etc address space, set of program's source files, pointer, etc
Which deadlock condition does ordering resources numerically attack? *0/1None of the othersMutual exclusion Hold and waitCircular wait
How many ways are to used to keep track of free block in disk space management? *0/1A linked list methodAll of the othersA indexed methodA bitmap method
Which of these statements about the Inverted Page Table are true? *0/1An entry contains the pair (segment, virtual page) mapped into the corresponding page frameAn entry contains the pair (segment, offset) mapped into the corresponding page frameAn entry contains the pair (process, offset) mapped into the corresponding page frame An entry contains the pair (process, virtual page) mapped into the corresponding page frame
Which solution is used to solve the "missing block" problem in file system consistency? *1/1The file system checker rebuilds the free listThe file system checker adds the missing blocks to the free list None of the othersThe file system checker allocate the free block, then copy the duplicate block in used to there
To specify an address in this segmented memory, the _____ form is used *1/1<segment-number, offset><virtual address, offset><process, offset><physical address, offset>
Which of the following statement is a disadvantage of separating I/O and memory space? *0/1Since the control registers of devices are mapped into the memory space, device drivers can be written without using Assembly languageAll of the othersThe set of all the I/O ports is protected so that the ordinary users must use 2 instructionsCaching a device control register would be disastrous
Suppose a virtual address space of 2^24 words and the page size is 2^10 words. If the virtual address is 1234567 in Hexadecimal, what would be the page number in Hexadecimal? *0/11234 2461232468
Assume jobs A-D arrive in quick succession in the READY queue. Using round robin scheduling (quantum=4), the average turnaround time for each job is ____. *1/1Captionless Image2018.25 573
In a directed graphs model, a possible of deadlock can occur: *0/1If graph contains a cycle and several instances per resource typeIf graph contains no cycle None of the othersIf graph contains a cycle and only one instance process per resource type
One of way to prevent a deadlock is ________ *0/1Kills one of the processesLocks one of the processes Spool everythingRollback
Which keyword is appropriate described in the following statement: "While memory sizes are increasing rapidly, software sizes are increasing much faster"? *0/1bloatwareoverlays swappingpaging
Five batch jobs A through E, arrive at a computer center at almost the same time. They have estimated running times of 8, 6, 2, 10, and 4 minutes. . Determine the average turnaround time for FCFS scheduling. Ignore process switching overhead. *1/120 minutes18 minutes17 minutes18.8 minutes
A system has five processes and three allocated resources. The current allocation and maximum needs are as following figure. What is the smallest value of x for which this is a safe state? *0/1Captionless Image30 21
The live lock is resolved by ________ *0/1All of the othersNone of the othersKilling the process itself. Restricting all users to one process, one open file, and one everything.
What is a "tripping" in RAID? *1/1Distributing data over multiple drives All of the othersGet undressedTake away possessions from someone
What is the "sequential processes" concept? *1/1All process is executed in concurrencyNo concurrency inside a process; everything happens sequentially There are both many CPU and many PCNone of the others
Which mechanism is implemented by writing to the log file in file system management and optimization? *1/1Log-Structured File SystemsJournaling File Systems Virtual File SystemsNone of the others
How many ways are Thread implemented? *1/123 41
