Rust MCQs with answers Page - 26

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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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which keyword is used to define an alias for a type?

  • (A) let
  • (B) alias
  • (C) define
  • (D) type

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which of the following is a primitive numeric type in Rust?

  • (A) float
  • (B) number
  • (C) f32
  • (D) decimal

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which keyword is used to define a generic function?

  • (A) fn<T>
  • (B) fn generic
  • (C) generic fn
  • (D) gen fn

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Shyam Dubey • 3.70K Points
Extraordinary

Q. What does unwrap_or_default() return when called on None?

  • (A) None
  • (B) Panic
  • (C) Default value of type
  • (D) 0

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which keyword is used to define a constant expression?

  • (A) static
  • (B) const
  • (C) val
  • (D) define

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which module provides environment variables?

  • (A) std::env
  • (B) std::os
  • (C) std::cfg
  • (D) std::path

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which keyword is used to define an asynchronous block of code?

  • (A) future
  • (B) await
  • (C) async
  • (D) task

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which standard library module is used to spawn threads?

  • (A) std::os
  • (B) std::thread
  • (C) std::env
  • (D) std::task

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Shyam Dubey • 3.70K Points
Extraordinary

Q. What does Arc<T> stand for?

  • (A) Array Counted
  • (B) Atomic Reference Counted
  • (C) Asynchronous Runtime Clone
  • (D) Aligned Recursive Container

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Shyam Dubey • 3.70K Points
Extraordinary

Q. What is the output of the expression 5 / 2 in Rust?

  • (A) 2.5
  • (B) 2
  • (C) 3
  • (D) Compilation error

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