Erlang Quiz – Erlang Multiple Choice Questions and Answers

Erlang Quiz – Erlang Multiple Choice Questions and Answers – Do you want to take an Erlang Objective Test to assess your knowledge of Erlang concepts and basics? Then what are you waiting for? In the sections below, we have gathered a few Erlang Multiple Choice Questions and Answers that are often asked in interviews or competitive exams. By attempting the Erlang MCQ Online Test, you can test your knowledge. Scroll down now and take the Erlang Quiz/ Erlang MCQ Quiz right away to learn something new from the Erlang Questions and Answers.

Erlang Quiz

This article also provides a brief introduction to Erlang for candidates who are not familiar with the concept. Erlang is a general-purpose programming language that was developed in the 1980s by Ericsson, a Swedish telecommunications company, to handle massive amounts of simultaneous calls on their telephone switching systems. It is known for its ability to handle distributed, fault-tolerant, and highly concurrent systems with ease. Erlang has gained popularity among developers for its stability, scalability, and reliability, making it a popular choice for building complex and mission-critical systems. Now, let’s move on to the next sections and check the Erlang MCQ Questions & Answers to test your knowledge.

Erlang Multiple Choice Questions | Overview

Quiz Name	Erlang
Category	Technical Quiz
Exam Type	MCQ (Multiple Choice Questions)
Mode of Quiz	Online

Top 25 Erlang MCQ Questions & Answers – Erlang MCQ Quiz

1. Who created Erlang?

a) Joe Armstrong
b) Linus Torvalds
c) Tim Berners-Lee
d) Guido van Rossum

Answer: a)

Explanation: Erlang was created by Joe Armstrong, Robert Virding, and Mike Williams in the mid-1980s while they were working at Ericsson, a telecommunications company in Sweden.

2. Which of the following is not a feature of Erlang?

a) Concurrency
b) Fault tolerance
c) Object-oriented programming
d) Distributed computing

Answer: c)

Explanation: Erlang is a functional programming language and does not support object-oriented programming.

3. What is the syntax for defining a function in Erlang?

a) function_name(parameters) -> return_value.
b) function_name -> parameters, return_value.
c) parameters -> function_name : return_value.
d) function_name : return_value -> parameters.

Answer: a)

Explanation: The syntax for defining a function in Erlang is function_name(parameters) -> return_value.

4. What is a tuple in Erlang?

a) A sequence of elements of the same data type
b) A sequence of elements of different data types
c) A list of elements of the same data type
d) A list of elements of different data types

Answer: b)

Explanation: A tuple in Erlang is a sequence of elements of different data types, enclosed in curly braces ({}) and separated by commas.

5. What is a list in Erlang?

a) A sequence of elements of the same data type
b) A sequence of elements of different data types
c) A tuple of elements of the same data type
d) A tuple of elements of different data types

Answer: a)

Explanation: A list in Erlang is a sequence of elements of the same data type, enclosed in square brackets ([]) and separated by commas.

6. Which of the following is not a built-in data type in Erlang?

a) Integer
b) Float
c) Boolean
d) Character

Answer: d)

Explanation: Erlang does not have a built-in character data type.

7. What is the atom data type in Erlang used for?

a) Storing strings
b) Storing numbers
c) Storing boolean values
d) Storing unique identifiers

Answer: d)

Explanation: The atom data type in Erlang is used for storing unique identifiers, such as function names and module names.

8. Which operator is used for pattern matching in Erlang?

a) =
b) ==
c) !=
d) <=

Answer: a)

Explanation: The = operator is used for pattern matching in Erlang.

9. What is the purpose of the receive statement in Erlang?

a) To send messages to other processes
b) To receive messages from other processes
c) To terminate a process
d) To spawn a new process

Answer: b)

Explanation: The receive statement in Erlang is used to receive messages from other processes.

10. What is the process in Erlang?

a) A function that runs in parallel with other functions
b) A container for storing data
c) A type of data structure
d) A way to define a module

Answer: a)

Explanation: In Erlang, a process is a function that runs in parallel with other functions.

11. Which of the following is not a built-in function in Erlang?

a) abs()
b) length()
c) round
d) random()

Answer: d)

Explanation: The random() function is not a built-in function in Erlang.

12. What is the syntax for spawning a new process in Erlang?

a) spawn(module_name, function_name, [parameters]).
b) spawn(function_name, module_name, [parameters]).
c) spawn(function_name, [parameters], module_name).
d) spawn(module_name, [parameters], function_name).

Answer: a)

Explanation: The syntax for spawning a new process in Erlang is spawn(module_name, function_name, [parameters]).

13. What is the syntax for sending a message to another process in Erlang?

a) process_name: message.
b) process_name -> message.
c) process_name ! message.
d) process_name ? message.

Answer: c)

Explanation: The syntax for sending a message to another process in Erlang is process_name ! message.

14. What is the syntax for defining a module in Erlang?

a) module module_name.
b) module_name.
c) -module(module_name).
d) defmodule module_name.

Answer: c)

Explanation: The syntax for defining a module in Erlang is -module(module_name).

15. What is the purpose of the export statement in Erlang?

a) To define functions that can be called from other modules
b) To define variables that can be shared between processes
c) To define macros that can be used throughout the module
d) To define types that can be used in other modules

Answer: a) The export statement in Erlang is used to define functions that can be called from other modules.

16. What is the syntax for defining a macro in Erlang?

a) -define(macro_name(value), expression).
b) #define macro_name(value) expression.
c) macro_name(value) -> expression.
d) define macro_name(value) {expression}.

Answer: a) The syntax for defining a macro in Erlang is -define(macro_name(value), expression).

17. What is the purpose of the include statement in Erlang?

a) To include a module in the current module
b) To include a file in the current module
c) To include a macro in the current module
d) To include a type in the current module

Answer: b)

Explanation: The include statement in Erlang is used to include a file in the current module.

18. What is the syntax for importing a function from another module in Erlang?

a) import module_name.function_name.
b) import function_name from module_name.
c) from module_name import function_name.
d) function_name from module_name.

Answer: c)

Explanation: The syntax for importing a function from another module in Erlang is from module_name import function_name.

19. Which of the following is not a built-in module in Erlang?

a) lists
b) math
c) io
d) strings

Answer: d)

Explanation: The strings module is not a built-in module in Erlang.

20. What is the purpose of the lists module in Erlang?

a) To provide functions for manipulating lists
b) To provide functions for manipulating tuples
c) To provide functions for manipulating atoms
d) To provide functions for manipulating processes

Answer: a)

Explanation: The lists module in Erlang is used to provide functions for manipulating lists.

21. What is the purpose of the math module in Erlang?

a) To provide functions for mathematical operations
b) To provide functions for string manipulation
c) To provide functions for I/O operations
d) To provide functions for process management

Answer: a)

Explanation: The math module in Erlang is used to provide functions for mathematical operations.

22. What is the purpose of the io module in Erlang?

a) To provide functions for input and output operations
b) To provide functions for string manipulation
c) To provide functions for process management
d) To provide functions for mathematical operations

Answer: a)

Explanation: The io module in Erlang is used to provide functions for input and output operations.

23. Which of the following is not a type in Erlang?

a) integer
b) float
c) string
d) boolean

Answer: d)

Explanation: Boolean is not a type in Erlang.

24. What is the syntax for defining a tuple in Erlang?

a) {value1, value2, value3}.
b) [value1, value2, value3].
c) tuple(value1, value2, value3).
d) <value1, value2, value3>.

Answer: a)

Explanation: The syntax for defining a tuple in Erlang is {value1, value2, value3}.

25. What is the purpose of the case statement in Erlang?

a) To evaluate multiple conditions and execute the corresponding branch
b) To define a loop that repeats a certain number of times
c) To define a loop that repeats until a certain condition is met
d) To define a function that can be called from other modules

Answer: a)

Explanation: The case statement in Erlang is used to evaluate multiple conditions and execute the corresponding branch.

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