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kipiarov [429]
3 years ago
9

Why is accessing a disk block expensive? discuss the time components involved in accessing a disk block. (?

Computers and Technology
1 answer:
Dahasolnce [82]3 years ago
6 0

Answer:

Explanation:

A disk block works by transferring data between the disk and main memory units which are called the blocks, whose size can range drastically from 512 bytes to several thousand.  This data is converted to hardware-level cylinder, surface, and sector number  which makes accessing the data immensely slower than accessing data in the main memory. This time constraint is also the main reason as to why accessing a disk block is so expensive.

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<h3>What is a Word Problem?</h3>

This refers to the use of words that describes a real scenario that would lead to a mathematical calculation.

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Answer:

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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;
        }

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Fittoniya [83]
I don’t understand please speak English
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2 years ago
What does it mean when the lottery machine says function suppressed after scanning a ticket
WARRIOR [948]

When a machine  says function suppressed after scanning a ticket, it implies that you have won some certain amount.

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This term connote that a person has  a winning ticket in a lottery that is often owned by a government.

Note that  if a winning ticket is scanned, the terminal often shows a message just for you and that suppress function implies  that your the ticket has won something.

Learn more about lottery  from

brainly.com/question/9216200

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