Rust MCQs with answers Page - 32

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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R

Ravina • 3.96K Points
Extraordinary

Q. Which of the following is used for formatted writing to a buffer?

  • (A) formatln!
  • (B) write!
  • (C) print!
  • (D) println!

R

Ravina • 3.96K Points
Extraordinary

Q. Which function is used to execute a block of code after a thread finishes?

  • (A) join()
  • (B) sync()
  • (C) merge()
  • (D) wait()

R

Ravina • 3.96K Points
Extraordinary

Q. Which crate is commonly used for command-line argument parsing?

  • (A) clap
  • (B) args
  • (C) parseit
  • (D) getopt

R

Ravina • 3.96K Points
Extraordinary

Q. Which keyword is used to return a value early from a function?

  • (A) exit
  • (B) return
  • (C) stop
  • (D) break

R

Ravina • 3.96K Points
Extraordinary

Q. What is the default starting index for a for loop over a vector?

  • (A) 0
  • (B) 1
  • (C) -1
  • (D) None

R

Ravina • 3.96K Points
Extraordinary

Q. Which type is used to represent a dynamically sized string slice?

  • (A) str
  • (B) &str
  • (C) String
  • (D) *str

A

Admin • 832.01K Points
Coach

Q. Which keyword is used to define a mutable variable in Rust?

  • (A) let
  • (B) mut
  • (C) var
  • (D) change

A

Admin • 832.01K Points
Coach

Q. Which of the following is a valid way to define a function in Rust?

  • (A) function my_func() {}
  • (B) def my_func() {}
  • (C) fn my_func() {}
  • (D) func my_func() {}

A

Admin • 832.01K Points
Coach

Q. What does the 'match' keyword do in Rust?

  • (A) Compares two strings
  • (B) Pattern matching
  • (C) Loops over a collection
  • (D) Defines a macro

A

Admin • 832.01K Points
Coach

Q. Which trait allows a type to be duplicated in Rust?

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

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