The Idea

2. to limit the access to the variables and functions of a class
5. An object used to represent a stream of data.
8. A subroutine function passed in as an argument to be called at some point in the future.
10. Solve the problem of data reading and writing speed mismatch in the system. Between CPU and main memory, or between main memory and disk.
14. You can enter, exit, and resume at many different points. They can be implemented using the async def.
17. A general-purpose, high-level, interpreted, dynamically typed programming language.
18. An associative array in which any key is mapped to the corresponding value.
19. A system or set of systems used to enhance network security within an organization
21. one of the logical data models
24. flaw attack: substitute a different type of message field
25. a free and open-source CSS framework directed at responsive, mobile-first front-end web development.
28. An informal, English-like structure language used to describe the structure of a module.
29. a number represent by 0 and 1
30. A function that returns the value of another function, usually using the @Wrapper syntax for function transformations.
31. An anonymous inline function consisting of a single expression that is evaluated when called.
32. attack: using messages in a different context/for a different purpose than originally intended

1. A <--> i <-->B
3. An object that tries to find the loader of the module being imported.
4. A place to store variables
6. Represents a summary of elements such as literals, names, attribute access, operators, or function calls, all of which eventually return a value.
7. An implementation of a method that can be used to access a single data property.
9. Two or more threads are too busy responding to each other to work.
11. reuse parts of previous messages
12. A class used to create a class. A class definition contains a class name, a class dictionary, and a list of base classes.
13. attack: take advantage of normal protocol responses as encryption and decryption “services”
15. attack: send transmitted information back to originator
16. A thread cannot gain regular access to a shared resource because another thread often calls the object's methods.
20. An organized, shareable, and uniformly managed collection of large amounts of data stored on a computer over a long period of time
22. An object that can hold references to other objects.
23. Two or more threads are blocked forever, waiting for each other.
26. pretend to be another principal
27. A set of statements that can return a value to the caller. You can also pass zero or more arguments to it and use them in the body execution of the function.