You should always be afraid to use the internet<br><br> True or false?

50 POINTS How do you express yourself and your creativity through computer science?

Igoryamba

Answer:

1. I express myself through the designing, development and analysis of software and hardware used to solve problems in a variety of business, scientific and social contexts.

2. support the development of general reasoning, problem-solving and communication skills.

3. Through avoiding in repetious tasks and simplifying such works.

3 0

3 years ago

The destructor automatically executes when the class object goes out of ____.

Tema [17]

Answer:

scope

Explanation:

Destructor is a member function and it call automatically when the class object goes out of scope.

Out of scope means, the program exit, function end etc.

Destructor name must be same as class name and it has no return type.

syntax:

~class_name() { };

For example:

class xyz{

xyz(){

print(constructor);

}

~xyz(){

print(destructor);

}

int main(){

xyz num;

}//end program

when the object is create the constructor will called and when the program end destructor will call automatically.

4 0

3 years ago

Computer system with a 32-bit logical address and 4k-byte page size. assume that each entry of a page table consists of 4bytes.

Annette [7]

The number of bits in the physical address is 26 bits. The number of entries in a page table is $\mathbf{2^{20}}$ entries. The size of the page table in a one-level paging scheme is 4MB.

<h3>
What is paging in Operating System?</h3>

Paging is a storage method used in operating systems to recover activities as pages from secondary storage and place them in primary memory. The basic purpose of pagination is to separate each procedure into pages.

We are given the following parameters:

32-bit logical address
Page size = 4 KB = $\mathbf{2^{12} \ bytes }$
Size of each Page table entry = 4 bytes

Suppose the system supports physical memory size = 64 MB = $\mathbf{2^{26} \ bytes}$

Thus, the number of bits in the physical address is computed as:

= $\mathbf{log_2 \{Physical-memory-size\}}$

$=\mathbf{log_2(2^{26})}}$

= 26 bits

The number of entries in a page table = logical address space size/page size

The number of entries in a page table $\mathbf{= \dfrac{2^{32}}{2^{12}}}$

$\mathbf{=2^{20}}$ entries

In a one-level paging scheme, the size of the table is:

= entire no. of page entries × page table size

= $\mathbf{2^{20}\times 4 \ bytes}$

= 4 MB

b.

suppose that this system supports up to 2^30 bytes of physical memory.

The size of the page table will be the same as 4 MB due to the fact that the number of entries, as well as, the page table entry size is the same.

Since the size of the page table surpasses that of a single page. A page cannot include a whole page table. Therefore, the page table must be broken into parts to fit onto numerous pages, and an additional level of the page table is required to access this page table.

This is called the Multi-Level Paging system.

Therefore, we can conclude that the number of bits in the physical address is 26 bits, the number of entries in a page table is $\mathbf{2^{20}}$ entries, and the size of the page table in a one-level paging scheme is 4MB.

Learn more about Paging in Operating System here:

brainly.com/question/17004314

#SPJ1

4 0

2 years ago

The IntList class contains code for an integer list class. Study it; notice that the only things you can do are: create a list o

torisob [31]

Explanation:

public class Int_List

{

protected int[] list;

protected int numEle = 0;

public Int_List( int size )

{

list = new int[size];

public void add( int value )

{

if ( numEle == list.length )

{

System.out.println( "List is full" );

}

else

{

list[numEle] = value;

numEle++;

}

public String toString()

{

String returnStr = "";

for ( int x = 0; x < numEle; x++ )

{

returnStr += x + ": " + list[x] + "\n";

}

return returnStr;

}

public class Run_List_Test

{

public static void main( String[] args )

{

Int_List myList = new Int_List( 7 );

myList.add( 102 );

myList.add( 51 );

myList.add( 202 );

myList.add( 27 );

System.out.println( myList );

}

Note: Use appropriate keyword when you override "tostring" method

8 0

3 years ago

Read the following scenario. How might Sarah correct successfully complete her task? To permanently remove a file from her compu

Mekhanik [1.2K]

I'd go with two answers.

A: To permanently remove a file from her computer, Sarah doubled-clicked on the My Computer icon and searched for her file under the “Uninstall or change a program” menu option.

Or

B: Empty the Recycle Bin.

This question is somewhat not clear. Why I went with the answers above is because I really do not know what kind of a file Sarah wants to permanently remove. You can permanently delete a program file installed in the computer by following the procedure in option A. The option above will take you to the control panel and you'll be able to select the program you'd want to permanently remove. If you had initially deleted a file like a picture or a document or anything else that you necessarily do not need, it will go to recycle bin. You can head over there and select the Empty the Recycle Bin option to permanently delete the file.

7 0

3 years ago

You should always be afraid to use the internet True or false?