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shtirl [24]
3 years ago
13

Disk scheduling algorithms in operating systems consider only seek distances, because Select one: a. modern disks do not disclos

e the physical location of logical blocks. b. the operating systems may have other constraints such as writes may be more urgent than reads. c. rotational latency is insignificant compared to the average seek time. d. it is difficult to optimize seek time in disk hardware.
Computers and Technology
1 answer:
Sergeu [11.5K]3 years ago
4 0

Answer:

a. modern disks do not disclose the physical location of logical blocks.

Explanation:

In modern disks, the disk scheduling algorithms are built in the disk drive. It is difficult for operating system to schedule for improved rotational latency. All scheduling algorithms are forced to behave the same because operating system may have constraints. Disks are usually accessed in physical blocks. Modern disks put more electronic controls on the disk.

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3 0
3 years ago
Write a method swaparrayends() that swaps the first and last elements of its array parameter. ex: sortarray = {10, 20, 30, 40} b
Alexus [3.1K]
In the C programming language, you can't determine the array size from the parameter, so you have to pass it in as an extra parameter. The solution could be:

#include <stdio.h>

void swaparrayends(int arr[], int nrElements)
{
int temp = arr[0];
arr[0] = arr[nrElements - 1];
arr[nrElements - 1] = temp;
}


void main()
{
int i;
int myArray[] = { 1,2,3,4,5 };
int nrElements = sizeof(myArray) / sizeof(myArray[0]);
swaparrayends(myArray, nrElements);

for (i = 0; i < nrElements; i++)
{
printf("%d ", myArray[i]);
}

getchar();
}

In higher languages like C# it becomes much simpler:

        static void Main(string[] args)
        {
            int[] myArray = {1, 2, 3, 4, 5};
            swaparrayends(myArray);
            foreach (var el in myArray)
            {
                Console.Write(el + " ");
            }

            Console.ReadLine();
        }

        static void swaparrayends(int[] arr)
        {
            int temp = arr[0];
            arr[0] = arr.Last();
            arr[arr.Length - 1] = temp;
        }

3 0
3 years ago
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geniusboy [140]

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GenaCL600 [577]

Answer:

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Explanation:

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3 years ago
The faster alcohol is consumed, the faster it reaches the __________.
Anni [7]
The faster it reaches the bloodstream

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