Banner Grabbing is a technique used to gain information about a computer system on a network and the services running on its open ports. Administrators can use this to take inventory of the systems and services on their network.
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Answer:
In Java:
import java.util.*;
public class Main{
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
String isbn;
System.out.print("First 1:2 digits: ");
isbn = input.nextLine();
if(isbn.length()==12){
int chksum = 0;
for(int i = 0; i<12;i++){
if((i+1)%2==0){ chksum+= 3 * Character.getNumericValue(isbn.charAt(i)); }
else{ chksum+=Character.getNumericValue(isbn.charAt(i)); } }
chksum%=10;
chksum=10-chksum;
if(chksum==10){
System.out.print("The ISBN-13 number is "+isbn+"0");}
else{
System.out.print("The ISBN-13 number is "+isbn+""+chksum); } }
else{
System.out.print("Invalid Input");
} }}
Explanation:
See attachment for explanation where comments are used to explain each line
The correct statement about database services or database instances is
( B).<u>An instance of the cloud database operates as a service that handles all application requests to work with the data in any of the databases managed by that instance.</u>
<u />
Explanation:
An instance of the Database Engine can be defined as a service that <u>all application requests to work with the data in any of the databases managed by that instance.The data can be on the same system or can be on another system </u>
So in case of a Cloud based database engine
( B).<u>An instance of the cloud database operates as a service that handles all application requests to work with the data in any of the databases managed by that instance.</u>
<u />
Answer:
It is called B. REJ
Explanation:
REJ means Rapid Economic Justification. This is a methodology or framework to help IT professionals analyze IT investments. The main aim of this framework for business optimization
