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Recent questions tagged io-handling

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I/O INTERRUPT QUESTION
Assume the number of clock cycles for a polling operation, including transferring to the polling routine, accessing the device, and restarting the user program, is 400 cy...
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IO Organization : Comparing Programmed I/O and Interrupt I/O Performance
A device with data transfer rate 20 KB/sec is connected to a CPU. Data is transferred byte-wise. Let the interrupt overhead be 10 microseconds.What is the total time requ...
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UGC NET CSE | June 2023 | Part 2: 77
Given below are two statements: one is labelled as Assertion $\text{A}$ and the other is labelled as Reason $\text{R}$ .Assertion $\text{A}$ : I/O protection is ensured b...
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self doubt
Can Interrupt-Driven I/O be memory mapped?Polling is memory mapped or IO mapped?
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Applied Course | Mock GATE | Test 1 | Question: 62
Consider a $32$ bit, $10$ MIPS processor with an interrupt driven interface. Suppose a hard disk has a $16$ bit data bus and is connected to the processor and its transfe...
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ACE Test-4(GCO-2)
Correct Statements ???S1 : Generally I/O mapped I/O technique is used to connect more number of I/O devices then memory mapped I/O technique.S2 : Processor generates memo...
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MadeEasy Test Series: CO & Architecture - IO Handling
A CPU scans the status of output I/O device every 20ms. The interface for the I/O device includes two different parts one for status and other for data output. Assume the...
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Gateforum Test Series: Operating System - Io Handling
Shouldn’t the answer be A but D is provided as an answer
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I/O-COA
I think percentage of processor time consumed should be $\frac{ \,ISR\,time}{ISR\,time+\,Data\,Transfer\,Time}=\frac{100}{100+122}$.Is it correct?
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Non Vectored Interrupt
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Vectored I/O
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I/O operation
Please Explain Every Point :)Ans. All are Correct
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MadeEasy Test Series: CO & Architecture - Io Handling
Consider a system employing interrupt driven I/O for a particular device that transfer data at an average of 8 KB/sec on a continuous basis. Consider interrupt processing...
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UGC NET CSE | July 2018 | Part 2 | Question: 54
Normally user programs are prevented from handling I/O directly by I/O instructions in them. For CPUs having explicit I/O instructions, such I/O protection is ensured by ...
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ISI Mtech exam -2016
Please help me with this question..The CPU of a system having an execution rate of 1 million instructions per second needs 4 machine cycles on an average for executing an...
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ISRO CSE 2018 | Question: 65
Of the following, which best characterizes computers that use memory-mapped $\text{I/O}?$The computer provides special instructions for manipulating $\text{I/O}$ ports$\t...
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GATE CSE 2018 | Question: 9
The following are some events that occur after a device controller issues an interrupt while process $L$ is under execution.P. The processor pushes the process status of ...
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Doubt-03
State whether the following statements are TRUE or FALSE:Data transfer between a microprocessor and an I/OI device is usually faster in memory-mapped-I/O scheme than in I...
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status Register & I/o
What is the work of status register in I/O operation ?
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MadeEasy Subject Test: CO & Architecture - Io Handling
The solution says that the answer should be 80, but applying the formula (x/y)*100, where x is 250 and y is 200 fraction comes out to be greater than 1. Am i making a mis...
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MadeEasy Subject Test: CO & Architecture - Io Handling
A device with data transfer rate of 8 KBps is connected to a CPU. Data is transferred bytewise. Let interrupt overhead be 2 μsec. The byte transfer time between the devic...
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MadeEasy Subject Test: CO & Architecture - Io Handling
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Test by Bikram | Operating Systems | Test 2 | Question: 23
A moving arm disk-storage device has the following specifications. Number of tracks per recording surface – $200$ Disk – rotation speed – $2400$ rpm Track storage capacit...
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MadeEasy Test Series: CO & Architecture - I/O Handling
#plz check??
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Test by Bikram | Computer Organization and Architecture | Test 1 | Question: 23
A hard disk is connected to a $2$ GHz processor through a DMA controller which works in burst mode. The initial set up of a DMA transfer takes $1000$ clock cycles for the...
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Test by Bikram | Computer Organization and Architecture | Test 1 | Question: 17
The fastest mode of data transfer is:Programmable I/OInterrupt I/ODMABoth A and B
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GATE CSE 1990 | Question: 4-ii
State whether the following statements are TRUE or FALSE with reason:The data transfer between memory and I/O devices using programmed I/O is faster than interrupt-driven...
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GATE CSE 1987 | Question: 2b
State whether the following statements are TRUE or FALSE:Data transfer between a microprocessor and an I/O device is usually faster in memory-mapped-I/O scheme than in I/...
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