1.) B
2.) A
3.) D
4.) C
rand command returns a random number sqrt is going to return a decimal unless its a perfect square however the rand will not the now is quite obvious because it gives a time and date, while the other simply gives the date.
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
Answer:
Port number is used at the transport layer to identify the receiving application
Explanation:
Transport layer is responsible for overall “end-to-end” communication. It provides communication service to the application process which might be running on “different hosts”.
TCP (Transmission Control Protocol) or UDP (User Data Protocol) is the protocol used in the Transport layer. The port number is essential so that the transport layer can carry packets to the right destination pointing to the right application.
A port number usually contains 16 bit integer. Normally this number will send along with the header. Port number plays a major role in Transport layer.
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Answer:
knowledge acquisition facility
Explanation:
In the context of the components of a typical expert system, Knowledge acquisition facility is defined as that component of an expert system that is responsible for providing an effective and efficient medium for collecting and incorporating relevant information such as data, new rules, relationships and facts used by the expert system.
