Answer:
B and E is correct.
Explanation:
Given that network address
172.16.0.0/12
This is class B network type.
The ending of this network will be 172.31.255.255
In IP version 4 there are four following type of classes
1)Class A (0-127)
2)Class B (128-191)
3)Class C (191-223)
4)Class D(224-239)
5)Class E (240-255)
Generally class A,B,C and D are used.
So our options B and E is correct.
Answer:
A transformer is an electric device that uses electromagnetism to change voltage from one level to another or to isolate one voltage from another.
By permanently locking in stakeholder requirements during a project's planning phase
Answer:
shrinkage ratio = 1.538
Explanation:
given data
water content = 22 %
dry density γ = 82 pcf
required dry density specified γ' = 96 pcf
required to produce = 50,000 yd³ = 50000 × 27 = 1350,000 ft³
solution
we get here first volume of borrow pit that is we know that
dry density ∝ 
so 
v = 1580487.8 ft³
v = 58536.58 yd³
so here
shrinkage ratio will be as
shrinkage ratio = 
shrinkage ratio = 1.538
Answer:
#include <iostream>
#include <string>
#include "user.h"
#include "password.h"
using namespace Authenticate;
using namespace std;
int main()
{
inputUserName();
inputPassword();
cout << "Your username is " << getUserName() <<
" and your password is: " <<
getPassword() << endl;
return 0;
}
user.h:
#ifndef USER_H
#define USER_H
#include <string>
using namespace std;
namespace Authenticate
{
namespace
{
bool isvalid();
}
void inputUserName();
string getUserName();
}
#endif
user.cpp:
#include <iostream>
#include "user.h"
namespace Authenticate
{
string username="";
namespace
{
bool isvalid()
{
if(username.length() == 8)
return true;
else
return false;
}
}
void inputUserName(){
do
{
cout << "Enter your username (8 letters only)" << endl;
cin >> username;
}
while(!isvalid());
}
string getUserName()
{
return username;
}
}
password.h:
#ifndef PASSWORD_h
#define PASSWORD_h
#include <string>
using namespace std;
namespace Authenticate
{
namespace
{
bool isValid();
}
void inputPassword();
string getPassword();
}
#endif
password.cpp:
#include <iostream>
#include <string>
using namespace std;
namespace Authenticate
{
string password="";
namespace
{
bool isValid()
{
if(password.length() >= 8)
{
for(int i=0; i<password.length(); i++)
if(password[i] >= '0' && password[i] <= '9')
return true;
return false;
}
else
return false;
}
}
void inputPassword(){
do
{
cout << "Enter your password (at least 8 characters " <<
"and at leat one non-letter)" << endl;
cin >> password;
}
while(!isValid());
}
string getPassword()
{
return password;
}
}
