Answer:
An operating system has three main functions: (1) manage the computer's resources, such as the central processing unit, memory, disk drives, and printers, (2) establish a user interface, and (3) execute and provide services for applications software.
Memory Management.
Processor Management.
Device Management.
File Management.
Security.
Control over system performance.
Job accounting.
Error detecting aids.
The navigation keys allow you to move the cursor, move around in documents and webpages, and edit text.
Answer: Dynamic packet filtering
Explanation:
Dynamic packet filtering is the type of fire wall which is used automatically to enabled the modification in the real time based on the traffic content according to the filtering rules.
The dynamic packet filtering also facilitates to monitor the actual state of connection which is active.
It is also used to determine the actual state of network packet and permits the packet of network pass through firewall.
Answer:
import java.util.Scanner;
public class Main
{
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
System.out.println("Enter the number of bottles and cans:");
int numberOfbottles = in.nextInt();
int numberOfcans = in.nextInt();
System.out.printf("Bottles: %8d\n", numberOfbottles);
System.out.printf("Cans: %8d\n", numberOfcans);
}
}
Explanation:
Ask user to input the number of bottles and cans using Scanner class
Print the results so that the numbers to the right line up (Since we know that the numbers have at most 8 digits, we can use %8d in printf. Also, be aware that how printf statements are written so that the numbers line up)
Answer:
Maintenance Phase
Explanation:
One of the concepts employed in project management for describing stages involved when carrying out an information system development project is the systems development life cycle (SLDC). The cycle which starts from carrying out a feasibility study and ends in maintenance is a highly used conceptual model. There are 5 major stages or phase and they are the; Requirement Phase, Design Phase; Implementation Phase, Test Phase, and the Maintenance phase. The maintenance phase comes when testing has been complete and all enhancement and modifications have already been developed, and the system is operating.
