All categories

3 years ago

Explain the SCAN disk scheduling algorithm. Explain why it is sometimes called the Elevator Algorithm.

Computers and Technology

1 answer:

eimsori [14]3 years ago

3 0

Answer:

SCAN disk scheduling is the algorithm in which a certain arm of disk rotates in particular direction and serves the requests that arrive from that path. It scans the cylinder's disk in both back and forth direction.

If the arm reaches the bottom of the disk , it automatically stars working in the opposite direction and serves the request in the reverse direction path.As this functioning is similar to the elevator movement ,it is also known as elevator algorithm.

You might be interested in

Write a program that accepts a number as input, and prints just the decimal portion.

Olegator [25]

Answer:

There are 2 ways to do extract the decimal part: 

Explanation:

First method using number

int main() {

double num = 23.345;

int intpart = (int)num;

double decpart = num - intpart;

printf(""Num = %f, intpart = %d, decpart = %f\n"", num, intpart, decpart);

}

Second method using string:

#include <stdlib.h>

int main()

{

char* inStr = ""123.4567"";

char* endptr;

char* loc = strchr(inStr, '.');

long mantissa = strtod(loc+1, endptr);

long whole = strtod(inStr, endptr);

printf(""whole: %d \n"", whole);

printf(""mantissa: %d"", mantissa);

}

8 0

3 years ago

Read 2 more answers

To print the last element in the array named ar, you can write :A. System.out.println(ar.length);

timofeeve [1]

Answer:

Option (d) is the correct answer.

Explanation:

An Array is used to store multiple variables in the memory in the continuous memory allocation on which starting index value is starting from 0 and the last index value location is size-1.

In java programming language the array.length is used to tells the size of the array so when the user wants to get the value of the last element, he needs to print the value of (array.length-1) location so the correct statement for the java programming language is to print the last element in the array named ar is--

System.out.println(ar[ar.length-1]);

No option provides the above statement, so option d (None of these) is correct while the reason behind the other option is not correct is as follows--

Option a will prints the size of the array.
Option b also gives the error because length is an undeclared variable.
Option c will give the error of array bound of an exception because it begs the value of the size+1 element of the array.

3 0

3 years ago

Simplify the Boolean expression (AB(C + BD) + AB]CD.

finlep [7]

Explanation:

Simplify the Boolean expression (AB(C + BD) + AB]CD.

6 0

3 years ago

Read 2 more answers

What is the value of creating recurring tasks?

scoundrel [369]

Answer:

✔️saves time spent manually creating multiple tasks

Explanation:

I did it on edge

4 0

2 years ago

Read 2 more answers

Explain how communication managerial efficiency

kakasveta [241]

Answer:

The efficiency of manager depends upon his ability to communicate effectively with the members of his organisation. It is only through communication that management conveys its goals and desires, issues instructions and orders, allocates jobs and responsibility and evaluates performance of subordinates.

pls tag me brainliest

8 0

3 years ago