Computer organization basic questions answers

 

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Computer organization basic questions answers

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Question 6
The processor indicates to the devices that it is ready to receive interrupts .....
A
By enabling the interrupt request line
B
By enabling the IRQ bits
C
By activating the interrupt acknowledge line
D
None of the mentioned
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Question 6 Explanation: 
When the processor activates the acknowledge line the devices send their interrupts to the processor.
Question 7
We describe a protocol of input device communication below: i) Each device has a distinct address. ii) The BUS controller scans each device in a sequence of increasing address value to determine if the entity wishes to communicate iii) The device ready to communicate leaves its data in the I/O register iv) The data is picked up and the controller moves to the step a Identify the form of communication best describes the I/O mode amongst the following.
A
Programmed mode of data transfer
B
DMA
C
Interrupt mode
D
Polling
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Question 7 Explanation: 
In polling, the processor checks each of the devices if they wish to perform data transfer and if they do it performs the particular operation.
Question 8
Which one of the following is true with regard to a CPU having a single interrupt request line and single interrupt grant line? i) Neither vectored nor multiple interrupting devices is possible. ii) Vectored interrupts is not possible but multiple interrupting devices is possible. iii) Vectored interrupts is possible and multiple interrupting devices is not possible. iv) Both vectored and multiple interrupting devices are possible.
A
iii
B
i, iv
C
ii, iii
D
iii, iv
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Question 9
Which table handle stores the addresses of the interrupt handling sub-routines?
A
Interrupt-vector table
B
Vector table
C
Symbol link table
D
None of the mentioned
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Question 10
..... method is used to establish priority by serially connecting all devices that request an interrupt.
A
Vectored-interrupting
B
Daisy chain
C
Priority
D
Polling
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Question 10 Explanation: 
In the Daisy chain mechanism, all the devices are connected using a single request line and they're serviced based on the interrupting device's priority.
There are 10 questions to complete.

 

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