Vuram Web Developer Interview Questions and Answers

Aptitude and reasoning and verbal

1.Write a program to print sum of digital of numbers.
2.what program to swap two numbers with out using the third variable.
3. If a number is divisible by 91,then print "Foo".if a number is divisible by 97 then print"bar",if a number is divisible 91 and 97 then print"Foo bar".

Q1. Self interdiction wich language is comfortable , what is c,class,object, built-in functions, call by value, and call by reference , what is data structures and what is inter face inheritance and finally as...read more
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Basic C test where our syntax and approach got tested

Q1. Basic questions ... tell me about yourself? projects? some quizes, some coding snippets
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Q1. Print all str in arrays
Ans. 
Print all strings in an array
• Use a loop to iterate through the array

• Print each string in the array
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Q2. Print the missing number from the range 1 to 100;
Ans. 
Use the formula for sum of natural numbers to find the missing number.
• Calculate the sum of numbers from 1 to 100 using the formula n*(n+1)/2

• Find the actual sum of numbers from 1 to 100

• Subtract the actual sum from the calculated sum to find the missing number
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Q3. How to converts stack to heap
Ans. 
To convert a stack to a heap, you can use a sorting algorithm like heapify.
• Use a sorting algorithm like heapify to rearrange the elements in the stack into a heap structure.

• Heapify the stack by starting from the last non-leaf node and moving up the tree.

• After heapifying the stack, the elements will be in a heap structure with the root node containing the maximum value.
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Q4. Project and dbms question
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Q1. Array was given apply permutation combination and give biggest number
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Simple Questions With MCQ Style

Q1. Ask About What I Know
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Q2. Asked About How To Build Sysrem
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Q1. JWT authentication and authorisation.
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Q1. Run tasks on Code Sandbox
Ans. 
Code Sandbox allows running tasks for front-end development
• Open Code Sandbox and create a new project

• Add necessary dependencies and files

• Run tasks using npm scripts or command line

• Examples: build, start, test
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In first round, they ask a dynamic pattern question.

Q1. What is attribute in HTML
Ans. 
An attribute in HTML provides additional information about an element and is used to modify the element's behavior or appearance.
• Attributes are added to HTML elements using the syntax attribute="value".

• Attributes can be used to specify things like the size, color, or alignment of an element.

• Examples of attributes include 'href' in Example and 'src' in .
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Q2. Constructor in php and use of constructor
Ans. 
Constructor in PHP is a special method used to initialize objects of a class.
• Constructor is a special method with the same name as the class.

• It is automatically called when an object is created.

• Constructors can be used to initialize object properties or perform any necessary setup.

• Example: class Car { public function __construct() { echo 'Car object created'; }}
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Round duration - 60 minutes
Round difficulty - Medium

Technical Interview round with questions based on Javascript mainly.

Q1. What are the data types in JavaScript?
Ans. 
The set of types in the JavaScript language consists of primitive values and objects.

1. Primitive values (immutable datum represented directly at the lowest level of the language)
1.1 Boolean type : Boolean represents a logical entity and can have two values: true and false. 
1.2 Null type : The Null type has exactly one value: null.
1.3 Undefined type : A variable that has not been assigned a value has the value und...read more
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Q2. What is the typeof() operator in JavaScript?
Ans. 
In JavaScript, the typeof operator returns the data type of its operand in the form of a string. The operand can be any object, function, or variable.
Syntax: typeof operand

The possible types that exists in javascript are:

undefined
Object
boolean
number
string
symbol
function
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Q3. What is the return type of the getElementsByClassName method in JavaScript?
Ans. 
The getElementsByClassName method of Document interface returns an array-like object of all child elements which have all of the given class name(s).
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Q4. Is JavaScript single-threaded or multi-threaded?
Ans. 
JavaScript is a single-threaded language, which means it has only one call stack that is used to execute the program. The call stack is the same as the stack data structure that you might read in Data structures. As we know stacks are FILO that is First In Last Out. Similarly, within the call stack, whenever a line of code gets inside the call stack it gets executed and move out of the stack. In this way, JavaScript is...read more
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Q5. Can you explain the Async/Await function in JavaScript?
Ans. 
Async/Await is the extension of promises which we get as a support in Javascript. 

Async: It simply allows us to write promises based code as if it was synchronous and it checks that we are not breaking the execution thread. It operates asynchronously via the event-loop. Async functions will always return a value. It makes sure that a promise is returned and if it is not returned then javascript automatically wraps...read more
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Round duration - 60 minutes
Round difficulty - Easy

Technical Interview round with questions based on Angular mainly.

Q1. How does one share data between components in Angular?
Ans. 
Child to parent using @Output and EventEmitter : 
In this method, we bind a DOM element inside the child component, to an event ( click event for example ) and using this event we emit data that will captured by the parent component:

Child Component:
import {Component, Output, EventEmitter} from '@angular/core';

@Component({
selector: 'app-child',
template:`
Click to emit data
`,
styleUrls: ['./child.component.css']
})
expor...read more
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Q2. What are the different types of data binding in Angular?
Ans. 
There mainly two types of data binding in angular

One way data binding
One way data binding is a change in the state affects the view from component to view template or change in the view affects the state from view template to component.

Two-way data binding
Two-way data binding is a change from the view can also change the model and similarly changes in the model can also change in the view from component to view templat
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