Computer Science: An Overview (13th Edition) (What's New in Computer Science)
13th Edition
ISBN: 9780134875460
Author: Glenn Brookshear, Dennis Brylow
Publisher: PEARSON
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Chapter 3, Problem 4SI
Explanation of Solution
Responsibility of
“Yes”, it is our responsibility to lock the house in such a way that intruders cannot get in. However, public also has moral duty not to enter a house unless invited.
“Yes”, it is the duty of the operating system developers to safeguard the access to computer and its content so that that it cannot be leaked out by the hackers.
Explanation:
- Operating system security is the process of ensuring integrity, confidentiality and availability.
- Information insecurity costs billions in terms of information theft, financial theft, etc. Hacking leads to productivity loss, both when networks stop working and in dozens of minor security inconvenience that have to be endured.
- It is the responsibility of operating system to create a protection system which ensures that the user who is running that particular program is authentic...
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Change the following code so that there is always at least one way to get from the left corner to the top right, but the labyrinth is still randomized.
The player starts at the bottom left corner of the labyrinth. He has to get to the top right corner of the labyrinth as fast he can, avoiding a meeting with the evil dragon. Take care that the player and the dragon cannot start off on walls. Also the dragon starts off from a randomly chosen position
public class Labyrinth { private final int size; private final Cell[][] grid;
public Labyrinth(int size) { this.size = size; this.grid = new Cell[size][size]; generateLabyrinth(); }
private void generateLabyrinth() { Random rand = new Random(); for (int i = 0; i < size; i++) { for (int j = 0; j < size; j++) { // Randomly create walls and paths grid[i][j] = new Cell(rand.nextBoolean()); } } // Ensure start and end are…
Change the following code so that it checks the following 3 conditions:
1. there is no space between each cells (imgs)
2. even if it is resized, the components wouldn't disappear
3. The GameGUI JPanel takes all the JFrame space, so that there shouldn't be extra space appearing in the frame other than the game.
Main():
Labyrinth labyrinth = new Labyrinth(10);
Player player = new Player(9, 0); Dragon dragon = new Dragon(9, 9);
JFrame frame = new JFrame("Labyrinth Game"); GameGUI gui = new GameGUI(labyrinth, player, dragon);
frame.add(gui); frame.setSize(600, 600); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setVisible(true);
public class GameGUI extends JPanel { private final Labyrinth labyrinth; private final Player player; private final Dragon dragon; //labyrinth, player, dragon are just public classes
private final ImageIcon playerIcon = new ImageIcon("data/images/player.png");…
Chapter 3 Solutions
Computer Science: An Overview (13th Edition) (What's New in Computer Science)
Ch. 3.1 - Identify examples of queues. In each case,...Ch. 3.1 - Which of the following activities require...Ch. 3.1 - Prob. 3QECh. 3.1 - Prob. 4QECh. 3.2 - Prob. 1QECh. 3.2 - What is the difference between application...Ch. 3.2 - Prob. 3QECh. 3.2 - Prob. 4QECh. 3.3 - Summarize the difference between a program and a...Ch. 3.3 - Summarize the steps performed by the CPU when an...
Ch. 3.3 - Prob. 3QECh. 3.3 - If each time slice in a multiprogramming system is...Ch. 3.3 - Prob. 5QECh. 3.4 - Prob. 1QECh. 3.4 - Suppose a two-lane road converges to one lane to...Ch. 3.4 - Prob. 3QECh. 3.4 - Prob. 4QECh. 3.5 - Prob. 1QECh. 3.5 - Prob. 2QECh. 3.5 - If a process in a multiprogramming system could...Ch. 3 - List four activities of a typical operating...Ch. 3 - Summarize the distinction between batch processing...Ch. 3 - Prob. 3CRPCh. 3 - Prob. 4CRPCh. 3 - What is a multitasking operating system?Ch. 3 - Prob. 6CRPCh. 3 - On the basis of a computer system with which you...Ch. 3 - a. What is the role of the user interface of an...Ch. 3 - What directory structure is described by the path...Ch. 3 - Define the term process as it is used in the...Ch. 3 - Prob. 11CRPCh. 3 - What is the difference between a process that is...Ch. 3 - What is the difference between virtual memory and...Ch. 3 - Suppose a computer contained 512MB (MiB) of main...Ch. 3 - What complications could arise in a...Ch. 3 - What is the distinction between application...Ch. 3 - Prob. 17CRPCh. 3 - Summarize the booting process.Ch. 3 - Why is the booting process necessary?Ch. 3 - If you have a PC, record the sequence activities...Ch. 3 - Suppose a multiprogramming operating system...Ch. 3 - Prob. 22CRPCh. 3 - Prob. 23CRPCh. 3 - Prob. 24CRPCh. 3 - Prob. 25CRPCh. 3 - Would greater throughput be achieved by a system...Ch. 3 - Prob. 27CRPCh. 3 - What information is contained in the state of a...Ch. 3 - Identify a situation in a multiprogramming system...Ch. 3 - List in chronological order the major events that...Ch. 3 - Prob. 31CRPCh. 3 - Prob. 32CRPCh. 3 - Explain an important use for the test-and-set...Ch. 3 - Prob. 34CRPCh. 3 - Prob. 35CRPCh. 3 - Prob. 36CRPCh. 3 - Prob. 37CRPCh. 3 - Each of two robot arms is programmed to lift...Ch. 3 - Prob. 39CRPCh. 3 - Prob. 40CRPCh. 3 - Prob. 41CRPCh. 3 - Prob. 42CRPCh. 3 - Prob. 43CRPCh. 3 - Prob. 44CRPCh. 3 - Prob. 45CRPCh. 3 - Prob. 46CRPCh. 3 - Prob. 47CRPCh. 3 - Prob. 48CRPCh. 3 - Prob. 49CRPCh. 3 - Prob. 50CRPCh. 3 - Prob. 51CRPCh. 3 - Prob. 52CRPCh. 3 - How is the window manager related to the operating...Ch. 3 - Prob. 54CRPCh. 3 - Prob. 55CRPCh. 3 - Suppose you are using a multiuser operating system...Ch. 3 - Prob. 2SICh. 3 - Prob. 3SICh. 3 - Prob. 4SICh. 3 - Prob. 5SI
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