Disha Interview Questions and Answers

Polymorphism is the ability of a function or method to behave differently based on the object it is acting upon.

• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• It enables a single interface to be used for different data types or classes.

• Examples include method overloading and method overriding in object-oriented programming.

Find missing number from nth number array.

• Iterate through the array and calculate the sum of all numbers

• Calculate the sum of numbers from 1 to n using the formula n*(n+1)/2

• Subtract the sum of array from the sum of numbers from 1 to n to find the missing number

Inheritance is a concept in object-oriented programming where a class inherits properties and behaviors from another class.

• Inheritance allows a class to reuse code from another class.

• Types of inheritance include single inheritance, where a class inherits from only one parent class, and multiple inheritance, where a class inherits from multiple parent classes.

• Example: Class B inherits from Class A, so Class B can access

Find 2nd max element from array of strings

• Sort the array in descending order

• Skip the first element (max element)

• Return the second element

SEO stands for Search Engine Optimization, which is the practice of increasing the quantity and quality of traffic to your website through organic search engine results.

• SEO involves optimizing your website to improve its visibility on search engines like Google.

• It includes keyword research, on-page optimization, link building, and content creation.

• The goal of SEO is to drive more organic traffic to your website and imp...read more

Domain is the address of a website, hosting is the service that stores the website's files and makes it accessible online.

• Domain is the unique address of a website on the internet, like www.example.com

• Hosting is the service that stores the website's files and data on a server, making it accessible online

• Domain registration is the process of purchasing and owning a domain name

• Web hosting providers offer different types ...read more

Some main SEO tools include Google Analytics, SEMrush, Ahrefs, Moz, and Screaming Frog.

• Google Analytics for tracking website traffic and user behavior

• SEMrush for keyword research and competitive analysis

• Ahrefs for backlink analysis and site auditing

• Moz for SEO insights and rank tracking

• Screaming Frog for website crawling and technical SEO analysis

Google Adwords is an online advertising platform developed by Google, where advertisers pay to display brief advertisements, service offerings, product listings, video content, and generate mobile application installs within the Google ad network to web users.

• Online advertising platform by Google

• Advertisers pay to display ads

• Can display various types of ads like text, display, video, etc.

• Helps in reaching target audien

Organic search refers to the unpaid search results generated by search engines based on relevance to the user's query.

• Organic search results are not influenced by paid advertising.

• Websites can improve their organic search rankings through search engine optimization (SEO) techniques.

• Examples of organic search results include links to websites, blogs, and articles that are deemed relevant to the user's search query.

Keywords are specific words or phrases that describe the content of a webpage and are used in SEO to help search engines understand the topic of the page.

• Keywords are used to optimize a website's content for search engines.

• They help search engines match a webpage to relevant search queries.

• Examples of keywords include 'SEO tips', 'best digital marketing agency', 'how to increase website traffic'.

Keywords analysis is the process of researching and identifying the most relevant keywords for a website to improve its search engine rankings.

• Keywords analysis involves identifying popular search terms related to a website's content.

• It helps in understanding what keywords users are searching for and how competitive those keywords are.

• Tools like Google Keyword Planner can be used for keywords analysis.

• The goal is to se...read more