1615 interview questions for IT Architect (2023)

Hard

15 votes962 runs2 comments

Understanding the differences between `map()` and `forEach()` methods in JavaScript

Web developer

Javascript

arrays

functions

Vincent Cotroat Mar 28, 2023

Easy

8 votes1266 runs0 comment

Is the following code valid? class Person { constructor(name, age) { this.name = name; this.age = age; } } const person = new Person('John', 20); console.log(person.name); console.log(person.age);

IT Architect

OOP

javascript

undefined

Eric Hostaleryat Dec 3, 2021

Easy

7 votes2940 runs0 comment

What is the minimum PHP version for Symfony 5?

Back-end developer

Symfony

php

Smaïne Millaniat Dec 3, 2021

Medium

7 votes1800 runs0 comment

Explain the prototype scope in Spring

Back-end developer

Spring

bean

Anonymous authorat Dec 21, 2021

Easy

7 votes1246 runs0 comment

How should a package be named in Java?

Full stack developer

Java

packages

Pierreat Sep 19, 2022

Medium

6 votes1909 runs0 comment

A bean with a `session` scope is injected into a bean with a` singleton` scope. What happens when the application starts?

Back-end developer

Spring

scope

Anonymous authorat Dec 21, 2021

Easy

6 votes1660 runs0 comment

The certificate variable is not attainable outside the if loop

Web developer

Javascript

variables

scope

Kahinaat Apr 6, 2022

Hard

6 votes1560 runs1 comment

Write a Javascript code that prints the indexes of an array.

Front-end developer

Javascript

array

for loop

Jean-marie Cléryat Nov 8, 2023

Hard

5 votes2276 runs0 comment

A Customer class has the com.company.model package.

Back-end developer

Java

inheritance

package

Thomas De verdièreat Jan 4, 2022

Expert

5 votes2212 runs0 comment

Write a finalizer in Java.

Back-end developer

Java

finalizer

Thomas De verdièreat Dec 16, 2021

Medium

5 votes1261 runs1 comment

Write a Java program that prints 'welovedev'.

Full stack developer

Java

strings

variables

Pierreat Sep 19, 2022

Hard

5 votes795 runs0 comment

PHP code that throws an error.

Back-end developer

PHP

errors

Anonymous authorat Jan 4, 2022

Expert

5 votes654 runs0 comment

How to define a global variable with Node.js?

Back-end developer

NodeJS

variables

node.js

Jean-marie Cléryat May 11, 2022

Expert

5 votes383 runs0 comment

Overrided method visibility must be the same or less restrictive than the inherited method.

IT Architect

OOP

visibility

inheritance

Samuelat Mar 28, 2022

Easy

5 votes119 runs1 comment

Import an add function from a TypeScript module math.ts

Web developer

Typescript

import

module

Lucasat May 30, 2023

Medium

4 votes2774 runs0 comment

What is the signature of `Kernel :: terminate()` in Symfony?

Back-end developer

Symfony

kernel

Smaïne Millaniat Dec 16, 2021

Hard

4 votes2287 runs0 comment

How many times is the condition `(a++ < 15)` evaluated in the following code? ```java int a = 3; while (a++ < 15) { if ((a++ % 5) == 0) break; } ```

Back-end developer

Java

loops

control flow

Thomas De verdièreat Dec 16, 2021

Hard

4 votes2250 runs1 comment

Serialization can be customized with the Externalizable interface

Back-end developer

Java

serialization

interface

Thomas De verdièreat Jan 4, 2022

Easy

4 votes2247 runs0 comment

What are the visibility modifiers for a method in Java?

Back-end developer

Java

access modifiers

methods

Thomas De verdièreat Jan 4, 2022

Hard

4 votes2217 runs1 comment

How to write a portable Java program

Back-end developer

Java

native

Thomas De verdièreat Jan 4, 2022

1615 interview questionsfor IT Architect (2023)

Test your technical skills before an interview of IT Architect with 1615 corrected questions. Beginner, Intermediate or Expert level.

Understanding the differences between `map()` and `forEach()` methods in JavaScript

Is the following code valid? class Person { constructor(name, age) { this.name = name; this.age = age; } } const person = new Person('John', 20); console.log(person.name); console.log(person.age);

What is the minimum PHP version for Symfony 5?

Explain the prototype scope in Spring

How should a package be named in Java?

A bean with a `session` scope is injected into a bean with a` singleton` scope. What happens when the application starts?

The certificate variable is not attainable outside the if loop

Write a Javascript code that prints the indexes of an array.

A Customer class has the com.company.model package.

Write a finalizer in Java.

Write a Java program that prints 'welovedev'.

PHP code that throws an error.

How to define a global variable with Node.js?

Overrided method visibility must be the same or less restrictive than the inherited method.

Import an add function from a TypeScript module math.ts

What is the signature of `Kernel :: terminate()` in Symfony?

How many times is the condition `(a++ < 15)` evaluated in the following code? ```java int a = 3; while (a++ < 15) { if ((a++ % 5) == 0) break; } ```

Serialization can be customized with the Externalizable interface

What are the visibility modifiers for a method in Java?

How to write a portable Java program