Object-Oriented Programming (Using Java Language)
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Answer:

import java.util.Scanner;

class Main {  

 public static void main(String args[]) {

       Scanner scan = new Scanner(System.in);

       System.out.print("Enter a decimal value (0 to 15): ");

       int num = scan.nextInt();

       scan.close();

       if (num < 0 || num >15) {

           System.out.printf("%d is an invalid input\n", num);

       } else {

           System.out.printf("The hex value is %X\n", num);

       }

 }

}

Explanation:

Hopefully this example will get you going for the other assignments.

Write a program that gives simple math quizzes. The program should display two random numbers that are to be added, such as:

Project 5-11 output

The program should allow the student to enter the answer. If the answer is correct, a message of congratulations should be displayed. If the answer is incorrect, a message showing the correct answer should be displayed.

1. Software that is designed to intentionally cause harm to a device, server, or network is A. outware B.loggerware C.
attackware D. malware Answer:
2. Some examples of malware include: A. robots, viruses, and worms B. trojans, worms, and bots C. computerware,
worms, and robots D.worms, system kits, and loggerware Answer:
3. Viruses and worms can affect a system by A. deleting hard drives B. slowing down the system C. improving system
functions D. producing fake applications Answer:
4. One tool that hackers use to get sensitive information from victims is/are A. loggerware B. keyloggers C.robots D.
phishing Answer:
5. One key feature of malware is that it A. can only work individually B. can only work on certain operating systems C.
can work jointly with other malware types D. can always be stopped by anti-malware software Answer:
6. One vulnerability that makes computers susceptible to malware is A. using anti-malware software B. using password
protection C. using old versions of software D. using encryption on sensitive files Answer:
7. Malware could A. cause a system to display annoying pop-up messages B. be utilized for identity theft by gathering
personal information C. give an attacker full control over a system D. all of the above Answer: -
8. Malware is a combination of which two words? A malevolent and software B. malignant and software C.
maladapted and software D. malicious and software Answer:
9. The most common way that malware is delivered to a system is through the use of A USB sticks B. damaged
hardware C. emails/attachments D.updated software Answer:
10. Mobile malware is A. malware that moves from one device to another B. malware that moves to different areas in
one system C. malware that deactivates after a period of time D. malware that infects smartphones and tablets
Answer: