I/O-Management
Question 1 |
The write operation in I/O operation does the following:
Transfer data from I/O device to memory
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Transfer data from memory to I/O device | |
Transfer data from CPU register to memory | |
Transfer data from CPU register to I/O device |
Question 1 Explanation:
In the context of standard Input/Output (I/O) operations, the terms Read and Write describe the direction of data flow relative to the computer's main memory (RAM):
Write Operation: Data is taken from the memory and moved to an external device (I/O device), such as saving a file to a hard disk, sending data to a network card, or displaying characters on a screen.
Read Operation: Data is taken from an external device (I/O device) and moved to the memory, such as loading a file from a hard disk, receiving data from a network, or reading input from a keyboard.
The CPU registers are temporary storage locations within the CPU itself and are typically involved in intermediate steps, but the primary data transfer path for an I/O write operation is between memory and the I/O device.
Write Operation: Data is taken from the memory and moved to an external device (I/O device), such as saving a file to a hard disk, sending data to a network card, or displaying characters on a screen.
Read Operation: Data is taken from an external device (I/O device) and moved to the memory, such as loading a file from a hard disk, receiving data from a network, or reading input from a keyboard.
The CPU registers are temporary storage locations within the CPU itself and are typically involved in intermediate steps, but the primary data transfer path for an I/O write operation is between memory and the I/O device.
Question 2 |
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: I/O protection is ensured by a hardware trap
Reason R: I/O interrupt caused by the condition like I/O completion and device malfunction occurring within the I/O devices
In the light of the above statements, choose the correct answer from the options given below
Assertion A: I/O protection is ensured by a hardware trap
Reason R: I/O interrupt caused by the condition like I/O completion and device malfunction occurring within the I/O devices
In the light of the above statements, choose the correct answer from the options given below
Both A and R are correct and R is the correct explanation of A
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Both A and R are correct and R is the NOT correct explanation of A
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A is true but R is false
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A is false but R is true |
There are 2 questions to complete.