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liq [111]
2 years ago
5

Some early computers protected the operating system by placing it in a memory partition that could not be modified by either the

user job or the operating system itself. Describe two difficulties that you think could arise with such a scheme.
Computers and Technology
1 answer:
Sav [38]2 years ago
5 0

Answer:

Check the explanation

Explanation:

1. Such operating systems cannot be modified and updating such OS (operating systems) would be almost impossible. This can prove fatal if we detect some serious bug, since there is no way to correct it.

2. The entire password and other credentials of users must be kept in an unsecure and vulnerable memory, since we can’t store it in the protected memory.

You might be interested in
Which sentence describes a task on which a genetic engineer is most likely to work?
galina1969 [7]

Answer:

C

Explanation:

If you look at the picture, you will see why it is C. It says D, but the multiple choices are differently ordered and it is kind of differently worded.

But in conclusion, the answer is C.

5 0
2 years ago
Read 2 more answers
Write an application that allows a user to enter any number of student quiz scores until the user enters 99. If the score entere
maria [59]

Answer:

import java.util.Scanner;

import java.util.*;

import java.util.Collections;

class Main

{

public static void main(String[] args)  

{

     List<Integer> Scores = new ArrayList<Integer>();

     Scanner sc1=new Scanner(System.in);

     int i =0;

     int a=0;

     do

     {

       System.out.println("Enter score");

       a =sc1.nextInt();

       if (a <= 0)

       {

           System.out.println("You entered wrong score");

           continue;

       }

       else if ( a < 10 && a >0)

       {

           System.out.println("You entered wrong score");

           continue;

           

       }

       else

       {

           Scores.add(a);

       }

       i++;

     }while(a!=99);

     int max= Collections.max(Scores);

     int min=Collections.min(Scores);

     int sum=0;

     float averg =0;

     for(i=0; i<=Scores.size()-1;i++)

     {

        sum += Scores.get(i);

     }

     averg= sum/Scores.size();

     System.out.println("Maximum score" +max);

      System.out.println("Minimum score"+min);

     System.out.println("Average:"+averg);

   

}

}

Explanation:

Remember we need to use Arraylist and not array, as we do not know how many scores we are going to have. And we use Collections for this, where we have functions for finding maximum and minimum for arraylist, however, for average, we need to calculate. However, one should know that Arraylist has better options available as compare to arrays.

3 0
2 years ago
Write a program that implements a class called Dog that contains instance data that represent the dog's name and age. • define t
g100num [7]

Answer:

<u>Dog.java:</u>

Dog{

   //Declare instance variables

   private String name;

   private int age;

   

   //Create the constructor with two parameters, and initialize the instance variables

   public Dog(String name, int age){

       this.name = name;

       this.age = age;

   }

   

   //get methods

   public String getName(){

       return name;

   }

   

   public int getAge(){

       return age;

   }

   

   //set methods

   public void setName(String name){

       this.name = name;

   }

   

   public void setAge(int age){

       this.age = age;

   }

   

   //calculateAgeInPersonYears() method to calculate the age in person years by multiplying the age by 7

   public int calculateAgeInPersonYears(){

       return 7 * getAge();

   }

   

   //toString method to return the description of the dog

   public String toString(){

       return "Name: " + getName() + ", Age: " + getAge() + ", Age in Person Years: " + calculateAgeInPersonYears();

   }

}

<u>Kennel.java:</u>

public class Kennel

{

public static void main(String[] args) {

          //Create two dog objects using the constructor

          Dog dog1 = new Dog("Dog1", 2);

          Dog dog2 = new Dog("Dog2", 5);

          //Print their information using the toString method

          System.out.println(dog1.toString());

          System.out.println(dog2.toString());

          //Update the first dog's name using setName method

          dog1.setName("Doggy");

          System.out.println(dog1.toString());

          //Update the second dog's age using setAge method

          dog2.setAge(1);

          System.out.println(dog2.toString());

}

}

Explanation:

*The code is in Java.

You may see the explanations as comments in the code

7 0
2 years ago
Su wants to apply the new font to the other slides of the presentation. She knows she can use the Format Painter tool
Hitman42 [59]

Answer:

1.) click the text in the text box

2.) replace fonts

Explanation:

e2020

3 0
2 years ago
1. In the Entity-Relationship Model, relationships can have attributes.
Vladimir [108]

Answer:

1. A. True

2. A. True

3. B. Conceptual.

4. Three (3).

Explanation:

An Entity-Relationship Model is used in databases to describe the structure and relationship between data elements known as entities.

1. True: In the Entity-Relationship Model, relationships can have attributes.

2. True: Attributes are the smallest division of data in ER diagram.

3. Conceptual: the level of abstraction which the Entity-Relationship Model most concerned with.

4. Consider the following relationship involving two entities, students and classes: A student can take many classes. A class can be taken by many students. The number of tables which can be used to represent this relationship in a schema is 3 because we are having three (3) parameters which are simply the students and the two entities.

In database management, the term "schema" is used to denote a representation of data.

A database schema is a structure which is typically used to represent the logical design of the database and as such represents how data are stored or organized and the relationships existing in a database management system. There are two (2) main categories of a database schema; physical database schema and logical database schema.

5 0
2 years ago
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