Hello, you haven't provided the programing language in which you need the code, I'll explain how to do it using Python, and you can follow the same logic to make a program in the programing language that you need.
Answer:
1. # -*- coding: utf-8 -*-
2. #Python
3. class Calculator:
4. def add(self):
5. print(a + b)
6. def sub(self):
7. print(a - b)
8. def mul(self):
9. print(a * b)
10. def div(self):
11. print(a / b)
12.
13. obj = Calculator()
14. choice = 1
15. while choice != 0:
16. a = int(input("\nEnter first number: "))
17. b = int(input("Enter first number: "))
18.
19. print("\n0. EXIT")
20. print("1. DIVISION")
21. print("2. ADDITION")
22. print("3. SUBTRACTION")
23. print("4. MULTIPLICATION")
24.
25. choice = int(input("\nEnter your choice: "))
26. if choice == 1:
27. obj.div()
28. elif choice == 2:
29. obj.add()
30. elif choice == 3:
31. obj.sub()
32. elif choice == 4:
33. obj.mul()
34. else:
35. break
Explanation:
- From lines 1 to 12 we define the object with four methods, addition, subtraction, multiplication, and division. Each method contains the operation between two variables inside a print function
- On line 13 we instantiate our class
- On line 14 we declare the variable choice that is going to store the operation that the user wants to perform
- On line 15 we declare a while loop, this is going to keep running the program until the user wants to exit
- From line 16 to 18 we ask the user to enter two numbers
- From line 19 to 24 we print the possible operation, assigning a number for each operation, this indicates to the user what number to press for what operation
- On line 25 we ask the user for the operation
- From lines 26 to 35 we check the user input an accordingly we call the corresponding method to performs the operation
Answer:
scheduling
Explanation:
Scheduling- it is referred to as assigning a task to complete the goal or work on time. he works can include data flow, processing of data, etc.
There are two main types of scheduling
1) Preemptive process
2) Non- preemptive process
Preemptive process - in this process, priority is given to important tasks rather than less important tasks. the current task can be held for an important task
Non-preemptive process - It is referred to that process when the predefined schedule follows. In this process, next task executed only when current task finish
The answer is a Scanning Electron Microscope
It is important to obtain and prepare proper samples when using SEM. The sample’s size, state, and shape are things that should be considered before the sample preparation. Some samples need to be coated. Most metals require no preparation since they can easily conduct electricity. Non-metals, however, needs to be coated with a thin layer of gold. Gold is the ideal non-metal and works most of the times.
Answer:
Yes, directory traversal attack.
Explanation:
A website is a collection big web pages hosted on a web server. It contains contents like links and sometimes directory root paths. This a vulnerability attacks an exploit to access the information in a database.
There are two access to a database. One is the authentication process issued for authorised user access and the other is the root access only accessible to the network administrator. It contains paths to directories in the servers.
A directory traversal attack or path attack is done through a web browser by an attacker, who seeks for a weak path link on the public's website and accesses the information in the server.
I guess you need to know if it is true or false. Then this one is true, Google Analytics will count the users and sessions with different domains separately. It's important to include tracking code on every page you want to track. This is the sequence to find your tracking code: Admin => Tracking Info => Tracking code.
