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Explain why Windows and Linux implements multiple locking mechanisms. Describe the circumstances under which they use spinlocks,

galben [10]

Answer:

The description for the given question is described in the explanation section below.

Explanation:

Depending on the needs of the device programmers these OS have various locking frameworks. Spinlocks become beneficial for preemptive multitasking processes during which a thread will operate in such an active loop instead of risking a rest queue latency. Mutexes become beneficial to utility lockers.

Solaris 2 employs flexible mutexes, indicating something like this on preemptive multitasking computers, the mutex is introduced with either a spinning switch.
Semaphores and state variations are much more effective methods for consistency where a commodity needs to be managed for such a prolonged period of time because spinning is unstable over a prolonged time.

8 0

2 years ago

Write a method called makeStars. The method receives an int parameter that is guaranteed not to be negative. The method returns

serious [3.7K]

Answer:

// import the Scanner class

// to allow the program receive user input

import java.util.Scanner;

// The class Solution is defined

public class Solution{

// main method to begin program execution

public static void main(String[] args) {

// scanner object scan is declared

Scanner scan = new Scanner(System.in);

// Prompt the user to enter a number

System.out.println("Enter the number of stars you want: ");

// user input is assigned to numOfStar

int numOfStar = scan.nextInt();

// call the makeStars method

makeStars(numOfStar);

}

// makeStars method print stars using recursion

// the method call itself till starNum == 0

public static void makeStars(int starNum){

if (starNum != 0){

System.out.print("*");

makeStars(starNum -1);

}

Explanation:

The code is well comment and solve the problem using recursion.

6 0

2 years ago

Write a function called sum_scores. It should take four arguments, where each argument is the team's score for that quarter. It

saw5 [17]

Answer:

Here is the Python program which has a function sum_scores:

def sum_scores(score1, score2, score3, score4):

sum = score1 + score2 + score3 + score4

print(sum)

sum_scores(14,7,3,0)

Explanation:

Method sum_scores takes four arguments, score1, score2, score3, score4.
The sum variable adds these four scores and stores the value of their addition.
Lastly print statement is used to print the value stored in sum variable which is the value obtained by adding the four scores.
Last statement calls the sum_scores method and passes four values to it which are 14,7,3,0
The output of the above program is:
24
If you want to use return statement instead of print statement you can replace print(sum) with return sum. But in order to display the sum of the scores you can replace sum_scores(14,7,3,0) with print(sum_scores(14,7,3,0))
The program along with the output is attached as a screenshot.

5 0

2 years ago

Two women are on either side of a high fence. One of the women, named Apple- server, has a beautiful apple tree loaded with deli

ZanzabumX [31]

Answer:

ok cool

Explanation:

kkk

6 0

2 years ago

You're the sole IT employee at your company, and you don't know how many users or computers are in your organization. Uh oh! Wha

Neporo4naja [7]

Answer

Directory Services

Definition

It is a type of software that is used to unify and customize the resources available at the network.

Explanation

This software is used to gather the information and addresses of all computers connected on the network.

It is a type of information store, where all the information related to resources (computer) and services of network has been stored. It also gives administrator rights to the single point to manage whole network resources.

This is the reason, Option "D" is the best choice for me as sole IT employ in a company. I will prefer directory services software to gather the information of all computers of organization and manage users in company.

4 0

2 years ago