Rust MCQs with answers Page - 25

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. What will happen if a thread panics in Rust?

  • (A) Whole program crashes
  • (B) Thread stops but others continue
  • (C) It retries execution
  • (D) Program restarts

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which trait is used for formatting types as strings?

  • (A) Clone
  • (B) Display
  • (C) Debug
  • (D) PartialEq

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which standard library module provides file operations?

  • (A) std::io
  • (B) std::fs
  • (C) std::file
  • (D) std::os

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Shyam Dubey • 3.70K Points
Extraordinary

Q. What does unwrap_or_else() accept as an argument?

  • (A) A default value
  • (B) A closure
  • (C) A match statement
  • (D) A reference

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which macro is used to include code from other files?

  • (A) include_file!
  • (B) use!
  • (C) include!
  • (D) mod!

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Shyam Dubey • 3.70K Points
Extraordinary

Q. What is the use of the as keyword?

  • (A) Module import
  • (B) Type casting
  • (C) Defining constants
  • (D) Loop control

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which keyword makes a trait method optional to implement?

  • (A) fn default
  • (B) optional
  • (C) default
  • (D) base

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Shyam Dubey • 3.70K Points
Extraordinary

Q. What is the return type of an if expression in Rust?

  • (A) Unit ()
  • (B) The type of the returned branch
  • (C) Boolean
  • (D) i32

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which of the following does not own heap memory?

  • (A) Box<T>
  • (B) Vec<T>
  • (C) String
  • (D) &str

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which trait must be implemented to sort a collection?

  • (A) Ord
  • (B) PartialEq
  • (C) Eq
  • (D) Display

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