Answer:
what I'm confused ???????
Explanation:
?
<span>Large headphones are essentially just two loudspeakers mounted on a strap that clamps firmly over your head. Earbuds work
the same way but, as you would expect, everything inside them (the
magnet, the coil of wire, and the diaphragm cone that makes sound) is
shrunk down to a much smaller size.</span>
Answer:
A primary key is a special relational database table column (or combination of columns) designated to uniquely identify each table record. A primary key is used as a unique identifier to quickly parse data within the table. A table cannot have more than one primary key.
Primary Key.
Candidate Key.
Alternate Key.
Super Key.
Composite Key.
Foreign Key.
Unique Key.
In the relational model of databases, a primary key is a specific choice of a minimal set of attributes that uniquely specify a tuple in a relation. Informally, a primary key is "which attributes identify a record," and in simple cases constitute a single attribute: a unique ID.
Explanation:
Answer:
import java.util.Scanner;
public class LabProgram {
public static void main(String[] args) {
Scanner scnr = new Scanner(System.in);
int inputYear;
boolean isLeapYear;
isLeapYear = false;
inputYear = scnr.nextInt();
// If a year is divisible by 400, then it is a leap year
if (inputYear % 400 == 0)
isLeapYear = true;
// If a year is divisible by 100, then it is not a leap year
if (inputYear % 100 == 0)
isLeapYear = false;
// If a year is divisible by 4, then it is a leap year
if (inputYear % 4 == 0)
isLeapYear = true;
if(isLeapYear)
System.out.println(inputYear + " is a leap year.");
else
System.out.println(inputYear + " is not a leap year.");
}
}
Explanation:
- Take the year as an input from user and store it to inputYear variable.
- If the year is a century year, check if the year is divisible by 400 ( the year must be evenly divisible by 400 ), then set the boolean isLeapYear to true. If a year is divisible by 100, then set the boolean isLeapYear to false. If a year is divisible by 4, then set the boolean isLeapYear to true.
- Check if isLeapYear is true, then print that it is a leap year. Otherwise, print that it is not a leap year.
Output:
1712
1712 is a leap year.
Answer:
The fastest way to obtain the revocation status of digital certificate of the website is by using Online certificate Status Protocol (OSCP).
Explanation:
Online certificate status protocol is the protocol that help user to check and verify the digital certificate revocation status. This protocol is linked with the digital certificate issuance authority. Whenever someone want to verify the status of the digital certificate that is attached to access the website. The website administrator can send the request to OSCP handler to ensure the status of the certificate. The OSCP handler is connected through certificate issuance authority, send the detail to verify the status. After verifying the status, OSCP handler respond as certificate is valid or revoked to the concerned user.
