Rust MCQs with answers Page - 20

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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A

Admin • 833.24K Points
Coach

Q. Which trait must be implemented to use a type in a HashMap key?

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

A

Admin • 833.24K Points
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Q. What is the return type of println!() macro?

  • (A) bool
  • (B) String
  • (C) i32
  • (D) ()

A

Admin • 833.24K Points
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Q. What does Box<T> provide in Rust?

  • (A) Heap allocation
  • (B) Pattern matching
  • (C) Copy semantics
  • (D) Thread safety

A

Admin • 833.24K Points
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Q. What is the purpose of the impl keyword?

  • (A) Import crates
  • (B) Define modules
  • (C) Implement methods and traits
  • (D) Create errors

A

Admin • 833.24K Points
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Q. Which is NOT a valid Rust keyword?

  • (A) match
  • (B) func
  • (C) impl
  • (D) const

A

Admin • 833.24K Points
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Q. Which feature allows running multiple tasks concurrently in Rust?

  • (A) unsafe
  • (B) async/await
  • (C) trait
  • (D) panic

A

Admin • 833.24K Points
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Q. Which keyword is used to import modules or functions?

  • (A) use
  • (B) import
  • (C) extern
  • (D) mod

S

Shyam Dubey • 3.70K Points
Extraordinary

Q. Which of the following is the correct way to define a constant in Rust?

  • (A) let PI = 3.14;
  • (B) const PI: f64 = 3.14;
  • (C) #define PI 3.14
  • (D) static mut PI: f64 = 3.14;

S

Shyam Dubey • 3.70K Points
Extraordinary

Q. Which type is used to handle operations that may produce an error?

  • (A) Option<T>
  • (B) Vec<T>
  • (C) Result<T, E>
  • (D) Match

S

Shyam Dubey • 3.70K Points
Extraordinary

Q. What is the default mutability of variables in Rust?

  • (A) Mutable
  • (B) Immutable
  • (C) Constant
  • (D) Volatile

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