PYTHON

(Game: Tic-tac-toe): Write a program that plays the tic-tac-toe game. Two players take turns clicking an available cell in a 3 x 3 grid with their respective tokens (either X or O). When one player has placed three tokens in a horizontal, vertical, or diagonal row on the grid, the game is over and that player has won. A draw (no winner) occurs when all the cells in the grid have been filled with tokens and neither player has achieved a win.

Show a trace of the recursive descent parser given in section 4.4.1 for the string b * (a * b) * a of Sebesta

Activity 1 – Using Netcat to Run Commands on Another Box

1. Fire up a virtual box guest OS. Install netcat if necessary (or if in Windows, check out netcat for windows or ncat from the maker of nmap). Start netcat in listener mode tying it to a command shell (see CHR chapter 8). Some versions of netcat can’t run commands, in which case you might need to install netcat-traditional
2. From another box (your host machine or another VM), initiate a netcat connection to you’re the box you set up in Step 1.
3. You should now have command prompt access (i.e. shell access). Type in a few commands (e.g. “dir” in Windows or “ls” in Linux) and document that what you type in one box affects the other box (i.e. that those commands are executed on the other box).
4. Take a screenshot of BOTH windows side-by-side or ask Dr. V to validate your setup.

Activity 2 – Intro to Putty SSH

1. Use instructions on next page to activate your Krypton account & set a new password.
2. Log in (in Putty or SSH client) on the Krypton (Unix) system.
3. Use Putty to create an encrypted tunnel (MAC users, use command-line SSH client) to mnsu.edu using source port 5555.
4. Edit your connection in your internet browser so that when you connect to 127.0.0.1:5555 you are sent to mnsu.edu through the tunnel.
5. Start Wireshark and sniff the packets that belong to your machine.
6. Open the newly configured browser and go to 127.0.0.1.
7. Document (i.e. PROVE) with Wireshark that the traffic is NOT being sent in plaintext directly to mnsu.edu but is instead being sent via the encrypted tunnel.

Note: you may still see some plaintext traffic (between your browser & your SSH client), but you should not be able to see any plaintext traffic going directly to mnsu.edu.

(hint: look for (i.e. filter) traffic going to the IP address of the mnsu.edu webserver)

      7.   Take appropriate screenshots to support your argument or have Dr. V verify it.

Write a program named Intervals.java that will take two time intervals (a starting and ending time) and compare them. The program first prompts the user for an earlier and later interval. Each interval consists of two numbers in 24-hour format (for example, 1507 for 3:07 p.m.):

Enter earlier start and end time as two 24-hour format times: 0700 1045
Enter later start and end time as two 24-hour format times: 0815 1130

You may presume that the user will enter the intervals with the start time and end time in the correct order.

The program will then calculate how many minutes are in each interval, which one is longer, and whether the intervals overlap (does the later interval start before the first one is finished):

The earlier interval is 225 minutes long.
The later interval is 195 minutes long.
The earlier interval is longer.
These intervals overlap.

Here is output from another run of the program:

Enter earlier start and end time as two 24-hour format times: 1340 1445
Enter later start and end time as two 24-hour format times: 1500 1710
The earlier interval is 65 minutes long.
The later interval is 130 minutes long.
The later interval is longer.
These intervals do not overlap.

If the intervals are of equal length, your output should say they are equally long. If the later interval starts at the same time that the earlier interval ends, they do not overlap.

Plan this program before you start writing it! No single part of this program is tremendously difficult, but there are many parts.

Hint: Convert the times to number of minutes after midnight. This will make your calculations much easier. For example, 0507 is 5 hours and 7 minutes past midnight, or 307 minutes past midnight. You will want to use / and % with 100 to split up the time into the hours and minutes part, but use 60 when calculating total minutes!

Extra challenge: Give the correct answer even if the user enters the beginning and end times for an interval in the wrong order, or if they enter the later interval first and the earlier interval second.

5. Write a CH program that takes the marks of a student as input and prints the grade on screen according to the following criteria: CRITERIA LESS THAN 60 GREATER THAN 60 BUT LESS THAN 65 GREATER THAN 65 BUT LESS THAN 70 GREATER THAN 70 BUT LESS THAN 75 GREATER THAN 75 BUT LESS THAN 80 GREATER THAN 80 BUT LESS THAN 85 GREATER THAN 85 BUT LESS THAN 90 GREATER THAN 90 GRADE F D D+ с C+ B B+ A

https://www.chegg.com/homework-help/questions-and-answers/5-write-ch-program-takes-marks-student-input-prints-grade-screen-according-following-crite-q58688769

Explain the implications of Management Information Systems on the Ecommerce industry.

Networking

1. Why is wireless transmission dangerous?
2. Why is 802.1X needed?

Compare the language generated by Grammar #2 to the language generated by Grammar #1. How do the two languages compare to each other? (Is one language a proper subset of the other? Does each language contain a string that the other one does not? Do both grammars generate the very same language?)

grammar #1 where S is the start symbol  

S → tV | iC | iV | i

C → tV

V → iC | iV | i

Grammar #2 where S is the start symbol

S → W

W → YW | Y

Y → CV | V

C → t

V → i

Assignment Specifications Background You are recently employed as a business analyst at Adam & Co, a Perth-based wholesaler of industrial supplies. Adam & Co sources its inventories from manufacturers in China, Thailand and Vietnam. The company has a centralised accounting system with networked terminals at different locations. Adam & Co’s expenditure cycle procedures are described as follow:

Purchases System

The process begins when the purchasing clerk checks the inventory subsidiary ledger at his/her computer terminal each morning. When the quantity of an item is deemed to be too low, the clerk selects a vendor from the valid vendor file and prepares a digital purchase order. The clerk prints two hard copies: one copy is sent to the vendor, and the other is filed in the purchasing department. Digital purchase order record is added to the purchase order file. When the goods arrive in the receiving department, the receiving clerk inspects them and reconciles the items against the information in the digital purchase order and the packing slip. The clerk then manually prepares two hard copies of the receiving reports. One of these accompanies the goods to the inventory warehouse, where the clerks shelves the goods and updates the inventory subsidiary ledger from his/her computer terminal. The clerk then files the receiving report in the department. The other copy of the receiving report is sent to the accounts payable department, where the accounts payable clerk files it until the supplier’s invoice arrives. When the accounts payable clerk receives the invoice he pull the receiving report from the temporary file, prints a hard copy of the digital purchase order, and reconcilesthe three documents. At this time, the clerk updates the digital accounts payable subsidiary ledger, the accounts payable control account and the inventory control account in the general ledger from his terminal. The clerk then sends the invoice, receiving report, and the purchase order copy to the cash disbursement department.

Cash Disbursements System

Upon the receipt of the documents from the accounts payable department, the cash disbursements clerk files the documents until their payment due date. On the due date, the clerk prepares a cheque for the invoiced account, when is sent to the treasurer who sign it and mail the cheque to the vendor. The cash disbursements clerk then updates the cheque register, accounts payable subsidiary ledger, and the accounts payable control account from his/her computer terminal. Finally, the receiving clerk files the invoice, purchase order copy, receiving report, and cheque copy in the department.

Payroll System

Adam & Co’s employees record their hours worked on time cards every day. Their supervisors review the time cards for correctness and submit them to the payroll department at the end of each week. Using a computer terminal connected to the central payroll system, which is located in the data processing department, the payroll clerk inputs the time card data, prints hard copies of the pay cheques, print two copies of the payroll register, and posts to digital employee records. The payroll clerk files the time cards in the payroll department and sends the employee pay cheques to the various supervisors for review and distribution to their respective department employees. The payroll clerk then sends one copy of the payroll register to the accounts payable department, and files the other with the time cards in the payroll department. Page 3 of 5 HA2042 Accounting Information Systems Individual Assignment The accounts payable clerk reviews the payroll register and manually prepares a disbursement voucher. The clerk sends the voucher and the payroll register to the general ledger department. The accounts payable clerk then writes a cheque for the entire payroll and deposits it in the imprest account at the bank. Finally the clerk files a copy of the cheque in the accounts payable department. Once the general ledger clerk receives the voucher and payroll register, the clerk posts to the general ledger from the department computer terminal and files the voucher and payroll register in the department.

required

System flowchart of payroll system??

Find a news article concerning a hacked website. Post a link, and summarize the article in your own words. (1-2 paragraphs)

Second question: You are hacking a website or application. Give a brief description of your attack scenario.

4.Which utilities can be used to perform remote management of servers?

5. What is the difference between the ifconfig and ifconfig commands?

6. Why should you use SSH over Telnet?

C++ program that converts a directed graph data from a user into a corresponding adjacency list format. First it will read an input graph data from a user first, after it will convert it to the adjacency matrix format. Assume that the maximum number of vertices in the input graph is less than or equal to 50.

The Sample Input 1

3
6
0 1
1 0
1 2
2 1
2 0
0 2

Output 1

0->1->2
1->0->2
2->0->1

The Sample Input 2

3
0

Output 3

0
1
2

Updating the following Java program below, I need to continue to take input for every employee in a company, and display their information until a sentinel value is entered that exits the loop and ends the program

import java.util.Scanner;
public class SalaryCalc
{
double Rpay=0, Opay=0;
void calPay(double hours, double rate)
{
if(hours<=40)
{
Rpay = hours * rate;
Opay = 0;
}
else
{
double Rhr,Ohr;
Rhr = 40;
Ohr = hours-Rhr;
Rpay = Rhr * rate;
Opay = Ohr * (1.5*rate);
}
}
public static void main(String[] args)
{
Scanner sc = new Scanner(System.in);
String name;
int shift = 0;
Double rate, hours;
System.out.println("Pay Calculator");
System.out.println("Enter Your Name");
name=sc.next();
System.out.println("Enter Your Shift, Enter 0 for Day, Enter1 for Night");
System.out.println("0=Day, 1= Night");
System.out.println("Enter Number of Hours Worked");
hours=sc.nextDouble();
System.out.println("Enter Hourly Pay");
rate=sc.nextDouble();
SalaryCalc c= new SalaryCalc();
c.calPay(hours,rate);
Double Tpay= c.Rpay+ c.Opay;
System.out.println();
System.out.println("Calculate Pay");
System.out.println("Employee Name: "+name);
System.out.println("Employee Regular Pay: "+c.Rpay);
System.out.println("Employee Overtime Pay: "+c.Opay);
System.out.println("Employee Total Pay: "+Tpay);
if(shift==0)
{
System.out.println("Employee PayPeriod is Friday");
}
else
{
System.out.println("Employee PayPeriod is Saturday");
}
}
}

C# programming

Write a number guessing game using System.Collections.Generic.Dictionary.

• Generate 10 distinct random numbers in the range of 1 to 20. Each random number is associated with a prize money (from 1 to 10000). Use a Dictionary to store the mapping between the random number and the prize money.
• Ask user for two distinct numbers, a and b, both from 1 to 20; if a and b are not distinct, or out of range, quit the program
• Lookup the prize money from both numbers and print out the sum via "You earned XXXX in total!". If the table does not contain the number, assume the prize money is 0.

e.g. Suppose we generate the following random numbers and penalty money:

If a user guess 5 and 3, we output "You earned 234 in total!"

If a user guess 1 and 13, we output "You earned 335 in total!"

If a user guess 1 and 1, quit

* Please use seeded random generation to help you debug your code, i.e. "Random rand = new Random(0);"

**You may have the following properties/methods useful: Count, ContainsKey, Add

Please copy and paste the final working program here:

Write a program in structured text that tells a butterfly valve to open for 10seconds and close thereafter.