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Salsk061 [2.6K]
3 years ago
15

Why do computers have both main memory and secondary storage?

Computers and Technology
1 answer:
VladimirAG [237]3 years ago
3 0
Main memory is RAM (random access memory) that is so programs can save data. Without ram, whenever you would write something in a text document it would delete it. Secondary storage is so you can save the file and go back to it.
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Which of the following was the name of the first generation of cell phone networks?
coldgirl [10]

Answer:

1G

Explanation:

1 'G' as in first generation.

Hope this helped. :)

3 0
3 years ago
Where can the Ease of Access and Speech Recognition centers be found?
Bess [88]

Answer:

bottom right

Explanation:

at least on windows it's bottom right

3 0
3 years ago
Read 2 more answers
Write a statement to create a Google Guava Multimap instance which contains student ids as keys and the associated values are st
Sergeu [11.5K]

Answer: provided in the explanation section

Explanation:

Note: take note for indentation so as to prevent error.

So we import com.google.common.collect.Multimap;

import java.util.Collection;

import java.util.Map;

class Main {

   public static void main(String[] args) {

       // key as studentId and List of Profile as value.

       Multimap<String,Profile> multimap = ArrayListMultimap.create();

       multimap.put("id1", new ExamProfile("examStudentId1"));

       multimap.put("id1", new ELearningProfile("userId1"));

       multimap.put("id2", new ExamProfile("examStudentId2"));

       multimap.put("id2", new ELearningProfile("userId2"));

       // print the data now.

       for (Map.Entry<String, Collection<Profile>> entry : multimap.entrySet()) {

           String key = entry.getKey();

           Collection<String> value =  multimap.get(key);

           System.out.println(key + ":" + value);

       }

   }

}

// assuming String as the studentId.

// assuming Profile as the interface. And Profile can multiple implementations that would be

// specific to student.

interface Profile {

}

class ExamProfile implements Profile {

   private String examStudentId;

   public ExamProfile(String examStudentId) {

       this.examStudentId = examStudentId;

   }

}

class ELearningProfile implements Profile {

   private String userId;

   public ELearningProfile(String userId) {

       this.userId = userId;

   }

}

This code is able to iterate through all entries in the Google Guava multimap and display all the students name in the associated students profile.

8 0
3 years ago
Write a program that prompts the user for the lengths of the two legs of a right triangle, and which reports the length of the h
timurjin [86]

Answer: The following code is in c++

#include <iostream>

#include<math.h>

using namespace std;

int main()

{

   float a,b,c;

   cout<<"Enter height and base of triangle\n";

   cin>>a>>b;  //reading two sides from user

   c=sqrt(pow(a,2)+pow(b,2));  //calculating hypotenuse

   cout<<"Length of hypotenuse is "<<c;  //printing third side of triangle

   return 0;

}

OUTPUT :

Enter height and base of triangle                                                                                            

3                                                                                                                              

4                                                                                                                              

Length of hypotenuse is 5  

Explanation:

In the above code, three variables a, b and c of int type are declared. After that, it is asked from user to enter the value of a and b. The user puts the value and then c is calculated with the help of Pythagoras theorem formulae which squares the values of two sides and then adds them to calculate hypotenuse of a right angled triangle and finally c is printed to console.

3 0
3 years ago
A network administrator manages a network with 75 servers. At least twenty of those servers are approaching end of life but the
Gekata [30.6K]

Answer:

Virtual servers

Explanation:

4 0
3 years ago
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