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469.

Increasing the RAM of a computer typically improves performance because:
[1 mark]
(a) Virtual memory increases
(b) Larger RAMs are faster
(c) Fewer page faults occur
(d) Fewer segmentation faults occur

asked in Computer Science And Engineering, 2005

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470.

What is the swap space in the disk used for? [1 mark]
(a) Saving temporary html pages
(b) Saving process data
(c) Storing the super-block
(d) Storing device drivers

asked in Computer Science And Engineering, 2005

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471.

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 having the I/O instructions privileged. In a CPU with memory mapped I/O, there is no explicit I/O instruction. Which one of the following is true for a CPU with memory mapped I/O?
[1 mark]
(a) I/O protection is ensured by operating system routine(s)
(b) I/O protection is ensured by a hardware trap
(c) I/O protection is ensured during system configuration
(d) I/O protection is not possible

asked in Computer Science And Engineering, 2005

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472.

Which one of the following is true for a CPU having a single interrupt request line and a single interrupt grant line? [1 mark]
(a) Neither vectored interrupt nor multiple interrupting devices are possible
(b) Vectored interrupts are not possible but multiple interrupting devices are possible.
(c) Vectored interrupts and multiple interrupting devices are both possible
(d) Vectored interrupt is possible but multiple interrupting devices are not possible

last reply by CpjJwWHV • 11 years ago • asked in Computer Science And Engineering, 2005

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473.

The switching expression corresponding to f(A,B,C,D)=∑(1,4,5,9,11,12) is:
[1 mark]
(a) BC'D' + A'C'D + AB'D
(b) ABC' + ACD + B'C'D
(c) ACD' + A'BC' + AC'D'
(d) A'BD + ACD' + BCD'

last reply by CpjJwWHV • 13 years ago • asked in Computer Science And Engineering, 2005

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474.

The hexadecimal representation of 657₈ is: [1 mark]
(a) 1AF
(b) D78
(c) D71
(d) 32F

asked in Computer Science And Engineering, 2005

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801 1 ...‹‹77 7879 80 81 ›› ... 134

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