Rust MCQs with answers Page - 4

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. What does `derive(Debug)` allow you to do?

  • (A) Add debugging breakpoints
  • (B) Enable println! for the struct
  • (C) Print struct using {:?}
  • (D) Add logging

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Q. Which of the following correctly clones a vector?

  • (A) vec.clone()
  • (B) vec.copy()
  • (C) vec.duplicate()
  • (D) vec.replicate()

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Q. What is a tuple in Rust?

  • (A) A type that holds only strings
  • (B) A fixed-size collection of values of different types
  • (C) A mutable array
  • (D) A recursive data structure

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Q. Which keyword is used for error handling in Rust?

  • (A) throw
  • (B) catch
  • (C) try
  • (D) match

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Q. What does `cargo run` do?

  • (A) Compiles and runs the Rust program
  • (B) Installs dependencies
  • (C) Formats the code
  • (D) Runs tests only

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Q. What is the output of `3 / 2` in Rust (using integer types)?

  • (A) 1.5
  • (B) 2
  • (C) 1
  • (D) 3

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Q. Which type is used to represent true or false in Rust?

  • (A) boolean
  • (B) bool
  • (C) bit
  • (D) flag

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Q. What does the `as` keyword do in Rust?

  • (A) Checks types
  • (B) Performs safe type casting
  • (C) Declares a variable
  • (D) Implements traits

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Q. Which of these is used for creating a new thread in Rust?

  • (A) std::thread::create
  • (B) thread::build
  • (C) std::thread::spawn
  • (D) core::thread::start

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Q. Which crate provides asynchronous programming features in Rust?

  • (A) async
  • (B) threading
  • (C) futures
  • (D) serde

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