Answer:
The correct answer to the following question will be Option B (VPN concentrator).
Explanation:
- Virtual Private Network (VPN) is a virtual, limited-use network generated using protocol encryption and tunneling over physical, public network connections.
- A dedicated tool for managing VPN connections built over an untrusted network, such as the Internet, is called a VPN concentrator.
- It's a type of networking system that ensures secure VPN connections are established and messages are transmitted between VPN nodes.
Therefore, Option B is the right answer.
Answer: trojan horse virus
Explanation:A trojan horse is a non-replicating program that looks legitimate, but it is actually used to perform malicious and illicit activities when launched. Attackers use trojan horses to steal a user's
personal information like password information, or they may simply use it to destroy programs or data on the hard disk.
Answer:
// here is code in c++.
#include <bits/stdc++.h>
using namespace std;
// main function
int main() {
// variable
int num;
int tot_sum=0;
cout<<"enter a number: ";
// read the value of n
cin>>num;
// check the multiple of 2 or 5 from 1 to n
for(int x=1;x<=num;x++)
{
// if multiple of 2 or 5 then add them
if(x%2==0 ||x%5==0)
{
tot_sum=tot_sum+x;
}
}
// print the sum
cout<<"sum of multiple of 2 or 5 is:"<<tot_sum<<endl;
return 0;
}
Explanation:
Read the number "n" from user.Check every number from 1 to n, if it is a multiple of 2 or 5 then add them to "tot_sum".When the for loop end, "tot_sum" will have sum of all the number which are either multiple of 2 or 5.Print the sum.
Output:
enter a number:11
sum of multiple of 2 or 5 is:35