1. What is Rust?
A) A programming language
B) A metal alloy
C) A video game
Answer: A
2. Which company developed Rust?
A) Google
B) Mozilla
C) Microsoft
Answer: B
3. What are some key features of Rust?
A) Memory safety
B) Data race prevention
C) High performance
D) All of the above
Answer: D
4. What is Rust’s package manager called?
A) npm
B) pip
C) Cargo
Answer: C
5. What is the Rust compiler written in?
A) Rust
B) C++
C) Assembly
Answer: A
6. What is the operator used for string concatenation in Rust?
A) +
B) &
C) *
Answer: A
7. Which of the following is not a primitive data type in Rust?
A) Integer
B) Floating-point
C) String
D) Boolean
Answer: C
8. What does the “mut” keyword do in Rust?
A) Declares a mutable variable
B) Declares an immutable variable
C) Declares a constant variable
Answer: A
9. What is Rust’s syntax for defining a function?
A) func my_function() {}
B) fn my_function() {}
C) function my_function() {}
Answer: B
10. What is a “match” statement in Rust?
A) A conditional statement
B) A loop statement
C) A switch statement
Answer: C
11. How does Rust handle memory management?
A) Automatic garbage collection
B) Manual memory allocation and deallocation
C) Ownership and borrowing
Answer: C
12. What is an “Option” type in Rust?
A) A type that represents a value that may or may not be present
B) A type that allows for dynamic memory allocation
C) A type that represents a collection of elements
Answer: A
13. What is a “Result” type in Rust?
A) A type that represents a value that may or may not be an error
B) A type that represents a collection of elements
C) A type that allows for dynamic memory allocation
Answer: A
14. What is a “closure” in Rust?
A) A function that captures variables from its surrounding environment
B) A type of loop
C) A type of switch statement
Answer: A
15. What is Rust’s syntax for creating a new struct?
A) struct MyStruct {}
B) struct MyStruct;
C) struct {} MyStruct;
Answer: A
16. What is Rust’s syntax for defining an enum?
A) enum MyEnum {}
B) enum {} MyEnum;
C) enum MyEnum;
Answer: C
17. What is Rust’s syntax for creating an array?
A) let my_array = [1, 2, 3];
B) let my_array = {1, 2, 3};
C) let my_array = (1, 2, 3);
Answer: A
18. What is Rust’s syntax for creating a vector?
A) let my_vector = vec![1, 2, 3];
B) let my_vector = {1, 2, 3};
C) let my_vector = (1, 2, 3);
Answer: A
19. What is Rust’s syntax for iterating over a collection?
A) for i in collection {}
B) for i in 0..collection.len() {}
C) for i in &collection {}
Answer: C
20. How does Rust handle error handling?
A) Through exceptions
B) Through return values that indicate errors
C) Through special error types
Answer: B
21. What is a “lifetime” in Rust?
A) The time during which a variable is valid
B) The time during which a function is executing
C) The time during which a program is running
Answer: A
22. What is “borrowing” in Rust?
A) Passing a reference to a variable to a function
B) Giving up ownership of a variable
C) Creating a new reference to a variable
Answer: A
23. What is “ownership” in Rust?
A) The concept of each variable having a unique owner
B) The concept of variables being owned by the program
C) The concept of variables being owned by the user
Answer: A
24. What is Rust’s syntax for creating a reference?
A) &variable
B) *variable
C) ~variable
Answer: A
25. What is Rust’s syntax for creating a mutable reference?
A) &mut variable
B) &variable
C) *variable
Answer: A
26. What is the “Copy” trait in Rust?
A) A trait that indicates that a type can be copied by value
B) A trait that indicates that a type can only be copied by reference
C) A trait that indicates that a type is not copyable
Answer: A
27. What is the “Clone” trait in Rust?
A) A trait that indicates that a type can be cloned by value
B) A trait that indicates that a type can only be cloned by reference
C) A trait that indicates that a type is not cloneable
Answer: A
28. What is the “Debug” trait in Rust?
A) A trait that provides formatted output for debugging purposes
B) A trait that provides execution debugging capabilities
C) A trait that provides memory debugging capabilities
Answer: A
29. What is the “Default” trait in Rust?
A) A trait that provides a default value for a type
B) A trait that provides default behavior for a type
C) A trait that indicates that a type does not have a default value
Answer: A
30. What is the “Into” trait in Rust?
A) A trait that allows for type conversion
B) A trait that provides I/O capabilities
C) A trait that provides networking capabilities
Answer: A
31. What is Rust’s syntax for implementing a trait for a type?
A) struct MyType: MyTrait {}
B) impl MyTrait for MyType {}
C) impl MyType: MyTrait {}
Answer: B
32. What is the “structopt” crate in Rust?
A) A crate for parsing command line arguments
B) A crate for parsing JSON data
C) A crate for parsing binary data
Answer: A
33. What is the “serde” crate in Rust?
A) A crate for serializing and deserializing data
B) A crate for networking
C) A crate for file I/O
Answer: A
34. What is the “rand” crate in Rust?
A) A crate for generating random numbers
B) A crate for testing
C) A crate for system-level programming
Answer: A
35. What is the “hyper” crate in Rust?
A) A crate for HTTP client and server programming
B) A crate for audio programming
C) A crate for database programming
Answer: A
36. What is the “tokio” crate in Rust?
A) A crate for asynchronous programming
B) A crate for network programming
C) A crate for testing
Answer: A
37. What is Rust’s syntax for creating a channel?
A) let (tx, rx) = channel();
B) let (rx, tx) = channel();
C) let channel = (tx, rx);
Answer: A
38. What is the “async” keyword in Rust?
A) A keyword that indicates that a function is asynchronous
B) A keyword that indicates that a function is synchronous
C) A keyword that indicates that a function is multithreaded
Answer: A
39. What is the “await” keyword in Rust?
A) A keyword that suspends execution until a future completes
B) A keyword that enables multithreading
C) A keyword that indicates a function is a coroutine
Answer: A
40. What is a “future” in Rust?
A) An object that represents the result of an asynchronous operation
B) An object that represents a variable binding
C) An object that represents a function call
Answer: A
41. What is a “stream” in Rust?
A) An object that represents a sequence of values
B) An object that represents a sequence of instructions
C) An object that represents a sequence of functions
Answer: A
42. What is the “async-std” crate in Rust?
A) A crate for asynchronous programming
B) A crate for testing
C) A crate for networking
Answer: A
43. What is the “actix” crate in Rust?
A) A crate for building web applications
B) A crate for building desktop applications
C) A crate for building mobile applications
Answer: A
44. What is the “rocket” crate in Rust?
A) A crate for building web applications
B) A crate for building desktop applications
C) A crate for building mobile applications
Answer: A
45. What is Rust’s syntax for calling a function in another module?
A) ::module::function()
B) module.function()
C) module::function()
Answer: C
46. What is Rust’s syntax for importing a module?
A) import module
B) use module
C) include module
Answer: B
47. What is Rust’s syntax for defining a constant?
A) const MY_CONSTANT: i32 = 10;
B) let MY_CONSTANT: i32 = 10;
C) MY_CONSTANT = 10;
Answer: A
48. What is Rust’s syntax for checking if two values are equal?
A) value1 == value2
B) value1 = value2
C) value1 != value2
Answer: A
49. What is Rust’s syntax for checking if a value is less than or equal to another value?
A) value1 <= value2
B) value1 >= value2
C) value1 < value2
Answer: A
50. What is Rust’s syntax for bitwise AND?
A) &
B) |
C) ^
Answer: A
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