Rust MCQs with answers Page - 7

Here, you will find a collection of MCQ questions on Rust. Go through these questions to enhance your preparation for upcoming examinations and interviews.

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Q. Which type of memory allocation does Rust use by default for variables like integers?

  • (A) Heap
  • (B) Stack
  • (C) Global
  • (D) Dynamic

A

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Q. Which method is used to get the length of a vector in Rust?

  • (A) size()
  • (B) count()
  • (C) len()
  • (D) length()

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Q. What does the `clone()` method do in Rust?

  • (A) Creates a shallow copy
  • (B) Creates a deep copy
  • (C) Moves ownership
  • (D) Deletes data

A

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Q. Which type does `vec![1, 2, 3]` return?

  • (A) Array
  • (B) HashMap
  • (C) Vec<i32>
  • (D) Tuple

A

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Q. Which function is used to handle command-line arguments in Rust?

  • (A) env::vars
  • (B) env::args
  • (C) std::args
  • (D) sys::args

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Q. Which of the following is used to format strings in Rust?

  • (A) printf!
  • (B) concat!
  • (C) format!
  • (D) stringify!

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Q. Which collection in Rust maintains insertion order?

  • (A) HashMap
  • (B) Vec
  • (C) BTreeMap
  • (D) HashSet

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Q. What does the `.iter()` method do in Rust?

  • (A) Consumes the vector
  • (B) Returns an iterator by value
  • (C) Returns an iterator by reference
  • (D) Sorts the collection

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Q. Which of the following is not a valid loop construct in Rust?

  • (A) for
  • (B) while
  • (C) do-while
  • (D) loop

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Q. What does the `Rc<T>` type in Rust provide?

  • (A) Mutable access to shared data
  • (B) Reference counting for shared ownership
  • (C) Unsafe access to data
  • (D) Asynchronous behavior

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