Answer:
Dynamic Host Configuration Protocol (DHCP) enables users to dynamically and transparently assign reusable IP addresses to clients. ... Domain Name System (DNS) is the system in the Internet that maps names of objects (usually host names) into IP numbers or other resource record values.
Answer:
Method:- This is related to hackers technique and way of accessing to copy other data. It also includes the skill, knowledge, tools and other things with which to be able to pull off the attack.
Opportunity:- this is related to how a user gives way to access to the hackers. It includes the time, the chance, and access to accomplish the attack.
Motive:- This may relate to the hacker to destroy the reputation of another or for money. It is reason to want to perform this attack against this system
Answer:
The program to this question as follows:
Program:
//header file iostream
#include<iostream> //including file for use basic function
//using name space
using namespace std;
//main method
int main() //defining main method
{
int a[3][3]; //defining two dimension array
int x,y,sum=0; //defining variables
cout<<"Enter array elements: "<<endl; //message
for(x=0;x<3;x++) // for row
{
for(y=0;y<3;y++) //for column
{
cin>>a[x][y]; //input values from user.
}
}
//loop for calculting sum.
for(x=0;x<3;x++)
{
for(y=0;y<3;y++)
{
sum=sum+a[x][y];//add all elements
}
}
cout<<"Sum: "<<sum; //print sum.
return 0;
}
Output:
Enter array elements:
1
2
3
4
5
6
7
8
9
Sum: 45
Explanation:
In the above C++ programming language code first, a header file is included then the main method is declared, inside a main method 2D array that is "a[][]", and an integer variable is defined that are "i, j, and sum". In the next line for loop is used, this loop is used two times that can be described as follows:
- The first time it is used for inserting elements from user ends.
- The second time, it uses the sum variable to add all array elements. and in the last print function that is "cout" is used for print sum variable value.
Answer: Harry should check that font he has used are readable on every page and element of his website
Harry should check that all images have alt texts
Explanation: edmentum
