Synechron Software Associate Interview Questions and Answers

Centering a div inside a parent div can be achieved using CSS flexbox or grid properties.

• Use CSS Flexbox: Set the parent div's display to 'flex' and justify-content and align-items to 'center'.

• Example: .parent { display: flex; justify-content: center; align-items: center; } .child { width: 50%; }

• Use CSS Grid: Set the parent div's display to 'grid' and use 'place-items: center'.

• Example: .parent { display: grid; place-it...read more

APIs can be categorized into various types, including REST, SOAP, and GraphQL, each with unique characteristics and use cases.

• REST (Representational State Transfer): Uses HTTP requests and is stateless. Example: GitHub API.

• SOAP (Simple Object Access Protocol): Protocol-based, uses XML for message format. Example: PayPal API.

• GraphQL: Allows clients to request specific data, reducing over-fetching. Example: Facebook API.

• ...read more

In JavaScript, 'null' is an object type that represents the intentional absence of any object value.

• 'null' is a primitive value in JavaScript.

• Using 'typeof null' returns 'object', which is a known quirk in JavaScript.

• It is often used to indicate that a variable should have no value.

• Example: let myVar = null; // myVar is explicitly set to have no value.

Arrays are data structures that store multiple values in a single variable, categorized into various types based on their characteristics.

• 1. One-Dimensional Arrays: A linear list of elements. Example: ['apple', 'banana', 'cherry']

• 2. Multi-Dimensional Arrays: Arrays of arrays, like matrices. Example: [['a', 'b'], ['c', 'd']]

• 3. Dynamic Arrays: Arrays that can resize themselves. Example: Using ArrayList in Java.

• 4. Associa...read more

=== checks for both value and type equality, while == checks for value equality with type coercion.

• === (strict equality) does not perform type conversion. Example: 1 === '1' returns false.

• == (loose equality) performs type conversion if types differ. Example: 1 == '1' returns true.

• Use === to avoid unexpected results from type coercion.

• Example: false == 0 returns true, but false === 0 returns false.