Rust MCQs with answers Page - 2

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 `cargo` do in Rust?

  • (A) Installs the Rust compiler
  • (B) Manages Rust packages and builds
  • (C) Edits Rust source code
  • (D) Visualizes Rust memory

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Q. Which symbol is used to reference a variable in Rust?

  • (A) &
  • (B) *
  • (C) #
  • (D) $

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Q. What does `Result<T, E>` represent in Rust?

  • (A) A successful operation only
  • (B) An asynchronous operation
  • (C) A value that can be Ok or Err
  • (D) A loop structure

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Q. Which tool formats Rust code automatically?

  • (A) cargo-fix
  • (B) rustdoc
  • (C) rust-analyzer
  • (D) rustfmt

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Q. What is the default integer type in Rust?

  • (A) i32
  • (B) i64
  • (C) u32
  • (D) usize

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Q. What is `Option<T>` used for in Rust?

  • (A) To perform looping
  • (B) To handle file operations
  • (C) To express a value that may or may not be present
  • (D) To create classes

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Q. Which keyword is used to create a module in Rust?

  • (A) mod
  • (B) module
  • (C) pkg
  • (D) use

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Q. What does the `?` operator do in Rust?

  • (A) Creates a reference
  • (B) Marks a function as async
  • (C) Propagates errors
  • (D) Denotes a wildcard match

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Q. Which of the following can cause a panic in Rust?

  • (A) Accessing an element out of bounds in a vector
  • (B) Compiling a program
  • (C) Using a match statement
  • (D) Using `let` keyword

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Q. Which of the following keywords defines an enumeration in Rust?

  • (A) enum
  • (B) enumType
  • (C) union
  • (D) struct

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