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valentinak56 [21]
1 year ago
13

Which one of the following provides an authentication mechanism that would be appropriate for pairing with a password to achieve

multifactor authentication? A. Username B. PIN C. Security question D. Fingerprint scan
Computers and Technology
1 answer:
vodka [1.7K]1 year ago
4 0

Answer:

Option d is the correct answer for the above question.

Explanation:

  • Authentication is a process that enables the user to enter the system. This process helps to secure the data. It is because with the help of this only valid users can enter the system. In this process, the system asks some unique information from the user which can only be known to the valid user.
  • Some systems put two types of authentications one is some information about the valid user and the other is a fingerprint scan that takes the data of the user finger and matches with their user name and password. If it matches then only he can enter into the system.
  • The above question asks about the mechanism which is used for multifactor authentication. This authentication is known as a fingerprint scan. So the option D is the correct answer while the other is not because:-
  1. Option 'a' states about the username which is used in the first authentication.
  2. Option b states about pin which can be used in the place of username.
  3. Option c states about the security question which is used when the user forgets the password.
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Following are groups of three​ phrases, which group states three ways to improve your​ concentration?
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3 0
1 year ago
A sum amounts to ₹2400 at 15% simple interest per annum after 4 years fond the sum.​
Elis [28]

Answer: $1,500

Explanation:

The future value of value using simple interest is:

Future value = Value * ( 1 + rate * time)

2,400 = Value * (1 + 15% * 4)

2,400 = Value * 1.6

Value = 2,400 / 1.6

Value = $1,500

6 0
2 years ago
Assume your friend just sent you 32 bits of pixel data (just the 0s and 1s for black and white pixels) that were encoded after s
lara31 [8.8K]

Answer:

your friend just sent you 32 bits of pixel data (just the 0s and 1s for black and white pixels) that were encoded after sampling an image. Choose the two statements that are true.

------------------

The 32 bits of pixel data is enough to produce the image using the widget. Nothing else is needed.

------------------------

The digital image would be an exact copy of the analog image.

-----------------------------The correct width and height must be input into the pixelation widget to produce the image.

---------------------------The fact that only 32 bits were used to represent the image indicates relatively large sample squares were used. The digital image may vary from the analog image significantly

Explanation:

3 0
2 years ago
In a particular jurisdiction, taxi fares consist of a base fare of $4.00, plus $0.25 for every 140 meters traveled. Write a func
devlian [24]

Answer:

// here is code in java.

import java.util.*;

// class definition

class Main

{

// method that return total fare

   public static double fare(double dis)

   {

   // calculate the total fare

       double tot_fare=(4+((dis*1000)/140)*0.25);

       return the fare

       return tot_fare;

   

   }

   //driver method

public static void main (String[] args) throws java.lang.Exception

{

   try{

    // scanner object to read input string

       Scanner s=new Scanner(System.in);

        // variable

       double dis;

       System.out.print("please enter the distance in KM: ");

       //read the number

       dis=s.nextDouble();

       

       // call the function with "dis" parameter

     double ride_fare=fare(dis);

     // print the total fare

     System.out.println("total fare is: "+ride_fare);

   }catch(Exception ex){

       return;}

}

}

Explanation:

Read the distance from user with the help of scanner class.Call the function with parameter "dis".Here it will calculate the total fare as (4+((dis*1000)/140)*0.25). Here base fare is $4 and $0.25 for every 140 meter.Then function will return the total fare.

Output:

please enter the distance in KM: 7                                                                                                                            

total fare is: 16.5  

7 0
2 years ago
Given sphereRadius and piVal, compute the volume of a sphere and assign to sphereVolume. Look up the equation online (e.g., http
fenix001 [56]

Answer:

  1. #include <stdio.h>
  2. int main()
  3. {
  4.    const double piVal = 3.14159;
  5.    double sphereVolume = 0.0;
  6.    double sphereRadius = 0.0;
  7.    
  8.    sphereRadius = 1.0;
  9.    sphereVolume = 4.0/ 3.0 * piVal * sphereRadius * sphereRadius * sphereRadius;
  10.    
  11.    
  12.    printf("Sphere volume: %lf\n", sphereVolume);
  13.    return 0;
  14. }

Explanation:

Firstly we can identify the formula to calculate volume of sphere which is

Volume = 4/3 \pi r^{3}

With this formula in mind, we can apply this formula to calculate the volume of sphere in Line 10. This is important to perform floating-point division 4.0/3.0 to ensure the resulting value is a floating value as well. Since we have been given piVal and sphereRadius, we can just multiply the result of floating-point division with piVal and sphereRadius and get the sphereVolume value.

At last, display the sphere volume using printf method (Line 13).

6 0
2 years ago
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