Answer:
d. All of these.
Explanation:
A VPN is an acronym for Virtual Private Network and it's a secured, encrypted and private web-based service used for accessing region-restricted and censored internet content. A VPN protects web data from potential hackers and government surveillance by hiding the real IP address of the host and encrypting user's internet traffic.
Basically, the VPN is a computer software that enables internet users to create a secured connection (sends and receives data) over public or shared networks like they're directly connected to the private network.
The potential benefits of a VPN service are;
- It increases privacy level by guarding the real IP address on the Internet.
- It protects user data exchange on a public Wi-Fi network by encryption.
- It can be used to securely connect to a corporate or personal network from far away through the Internet and access local resources.
There can be several reasons why the user is not able to delete a file on the NTFS Volume or disk partition of the computer. Possible scenarios are as follows.
1. The user does not have sufficient permission to perform the task as the file itself may not be owned with the user. The best way is to make sure the user is an administrator.
2. The file is corrupted which prevents to properly access, running a chkdsk will help to validate with this.
3. Another common scenario is that the file is actually currently in use.
Answer:
One reason to update BIOS and firmware is to ensure they support new hardware like CPU model or graphic card. In some cases, the updates can also resolve overheating issue or motherboard issue.
However, this is not always the case that we must update the BIOS every time there is a new release because the latest update may cause problem to existing system as well.
As a general rule, only when there are some problems with the existing BIOS and firmware, we are only required to update them.
Answer:
A class is like a blueprint of object.
Explanation:
A class defines the kinds of data and the functionality their objects will have.
A class enables you to create your own custom types by grouping together variables of other types, methods and events.
In C#, we can create a class using the class keyword.
Here's a sample program:
using System;
namespace ConsoleApplication
{
public class Test
{
public static void Main()
{
Add a1 = new Add(70, 50);
a1.AddNumbers();
Console.ReadLine();
}
}
class Add
{
private int row;
private int column;
public Add(int r, int c)
{
row = r;
column = c;
}
public void AddNumbers()
{
Console.WriteLine(row+column);
}
}
}
output: 120
Explanation of the program:
I have created a class named Add. Within a class, row and column are two fields and AddNumbers() is a method. We also have constructor to initialize row and column.
In main method, If I need to invoke members of the class, I must create an instance of the class. We can create any number of instances using the single class.IN our program, a1 is the reference variable using which we can invoke members of the class. I invoked function in the class and passed arguments to the constructor while creating an instance.
Those values are assigned to method variables and it operated the addition. Thus the output is 120.
