Olete.in – MCQs, Mock Tests & Government Job Prep | Erlang (programming language) Erlang MCQ Question

_______ is a general purpose or you might say a functional programming language and runtime environment.

1. Verilog
2. Svn
3. Erlang
4. Solidity

✅ Correct Answer: 3

Erlang was later released as an open source language in year?

1. 1997
2. 1998
3. 1999
4. 2000

✅ Correct Answer: 2

The ______ sign is used to add comments to the program.

1. %
2. *
3. $
4. #

✅ Correct Answer: 1

The /0 means that our function start accepts ______ parameters.

1. 1
2. -1
3. 0
4. None of the above

✅ Correct Answer: 3

Single line comments are identified by using the % symbol at any position in the line.

1. Yes
2. No
3. Can be yes or no
4. Can not say

✅ Correct Answer: 1

Which of the following removes all current variable bindings?

1. b()
2. f()
3. x()
4. z()

✅ Correct Answer: 2

h() is used to?

1. Prints the current variable bindings
2. Removes all current variable bindings
3. Removes the binding for a particular variable
4. Prints the history list of all the commands executed in the shell

✅ Correct Answer: 4

In Erlang, there are _______ types of numeric literals.

1. 0
2. 1
3. 2
4. 3

✅ Correct Answer: 3

An atom is a literal, a constant with name.

1. TRUE
2. FALSE
3. Can be true or false
4. Can not say

✅ Correct Answer: 1

Atoms should begin with a ?

1. special character
2. lowercase letter
3. uppercase character
4. None of the above

✅ Correct Answer: 2

What are the datatypes that Erlang provides?

1. Constant data types
2. Compound data types
3. Both A and B
4. None

✅ Correct Answer: 3

A file can be included in Erlang by

1. Include (File)
2. Include_lib (File)
3. Both of these
4. None of These

✅ Correct Answer: 3

What is the list of valid guard expressions?

1. Arithmetic Expressions
2. Boolean Expressions
3. Short-circuit Expressions
4. All of the above

✅ Correct Answer: 4

List out the pre-defined Macros in Erlang?

1. File
2. Line
3. Machine
4. All of the above

✅ Correct Answer: 4

What are the advantages of Erlang over other programming languages?

1. Mostly functional programming with decent matching constructs, but with fully dynamic typing
2. Reliability-oriented standard library
3. Hot code swapping
4. All of the above

✅ Correct Answer: 4

What are the large companies using Erlang in their production systems?

1. Amazon
2. Facebook
3. WhatsApp
4. All of the above

✅ Correct Answer: 4

Erlang has built-in support for

1. Concurrency
2. Fault tolerance
3. Distribution
4. All of the above

✅ Correct Answer: 4

What are the key features of Erlang? A. B. C. D. All of the above

1. Memory Management
2. Distribution
3. Integrationwrong
4. All of the above

✅ Correct Answer: 4

What is the syntax to write Macros in Erlang?

1. define ( Const, Replacement )
2. define ( Fun ( Var1 , Var2, …., Var ) , Replacement )
3. both (a) and (b)
4. None of these

✅ Correct Answer: 3

What is Erlang?

1. General purpose programming language
2. Assembly Language
3. Both of these
4. None

✅ Correct Answer: 1

A true or false statement put into code that the programmer expects to always be true is an ...

1. exception
2. harness
3. assertion
4. expression

✅ Correct Answer: 3

A section of code that responds to a particular interaction of the user with a gui control is called a ... ?

1. dispatch function
2. event handler
3. control structure
4. exception handler

✅ Correct Answer: 2

RISC is ...

1. a defensive programming style
2. a web framework
3. a threading library
4. a CPU design strategy

✅ Correct Answer: 4

At Dartmouth College in 1964 John Kemeny and Thomas Kurtz invented .... ?

1. ALGOL
2. BASIC
3. FORTRAN
4. None

✅ Correct Answer: 2

List out the pre-defined Macros in Erlang?

1. Module: It returns the name of the current module
2. Module_String: It returns the name of the current module, as a string
3. File: It returns the current file name
4. All of the above

✅ Correct Answer: 4

What are the key features of Erlang?

1. Declarative Syntax: It has got the declarative syntax
2. Concurrent: It has a process-based model of concurrency
3. Realtime: It programs a real-time system
4. All of the above

✅ Correct Answer: 4

Dylan, Erlang, Haskell and ML are examples of ... ?

1. web languages
2. declarative languages
3. functional languages
4. visual languages

✅ Correct Answer: 3

To include a file in Erlang what is the command used?

1. include (File)
2. include_lib (File)
3. All of these
4. None

✅ Correct Answer: 3

Give the list of valid guard expressions?

1. Atom true
2. Other constants
3. Calls to the BIFs specified
4. All of these

✅ Correct Answer: 4

You could use XSLT to ...

1. speed up database queries
2. encrypt passwords
3. transform XML into HTMLcorrect
4. cache html pages

✅ Correct Answer: 3

Atoms should begin with a ?

1. special character
2. lowercase letter
3. uppercase character
4. None of the above

✅ Correct Answer: 2

In Erlang, there are _______ types of numeric literals.

1. 0
2. 1
3. 2
4. 3

✅ Correct Answer: 3

_____ is a general purpose or you might say a functional programming language and runtime environment.

1. Verilog
2. Svn
3. Erlang
4. Solidity

✅ Correct Answer: 3

One Erlang represents _________

1. One call- hour per hour
2. One call-minute per hour
3. One call- hour per minute
4. Many calls- hour per hour

✅ Correct Answer: 1

What is an erlang ?

1. An Appalachian musical instrument
2. An Australian Aboriginal weapon
3. unit of telephone traffic
4. A subatomic particle

✅ Correct Answer: 3

What is the measure of the ability of user to access a trunked system during the busiest hour?

1. Trunking
2. Grade of Service
3. Multiplexing
4. Sectoring

✅ Correct Answer: 2

GOS is typically given as a likelihood that a ________

1. Call is in progress
2. Channels are busy
3. Call is blocked
4. Channel are free

✅ Correct Answer: 3

The time requires to allocate a trunked radio channel to a requesting user is called _______

1. Dwell time
2. Holding time
3. Run time
4. Set up Time

✅ Correct Answer: 4