SEO Interview Questions
SEO Interview Questions
1) How can you define SEO?
SEO stands for Search Engine Optimization. It is a process of increasing the number of visitors to a website. It enhances the visibility of a web page and increases the quantity and quality of traffic to a website so that it could appear at the top of search engine result pages.
It optimizes the websites for search engines and thus helps it achieve higher ranking in search engine result pages when users use keywords related to their products or services. Therefore, it improves the quality as well as the quantity of traffic to a website through organic search engine results. Some of the basic activities involved in an SEO process are as follows:
SEO Interview Questions
2) Who does SEO?
They are called SEO executives, Webmasters, Websites optimizers, Digital marketing experts, etc.
SEO executive: He is responsible for increasing the number of visitors or traffic to a website using various SEO tools and strategies.
SEO/SMO analyst: He is responsible for planning and implementing SEO and social media strategies for the clients. He is supposed to quickly understand and support initiatives to achieve the objectives and goals of the client campaigns.
Webmaster: He is responsible for maintaining one or more websites. He ensures that the web servers, software, and hardware are working smoothly.
Digital Marketing Expert: He is responsible for planning and executing digital marketing programs to promote the brand or increase the sales of the products and services of the clients.
3) Define ON page and Off page SEO?
On page SEO: It means to optimize your website and make some changes in the title, meta tags, structure, robots.txt, etc. It involves optimizing individual web pages and thus improves the ranking and attracts more relevant traffic to your site. It this type of SEO, one can optimize both the content and the HTML source code of a page.
Main aspects of On page SEO are:
Page Title: It should be relevant, unique and should include your main keywords.
Meta Descriptions: There should be a Meta description for each webpage, and it must contain relevant keywords for your content.
Meta Tags: You can add a set of keywords as Meta tags for each of your page.
URL Structure: You can include search engine friendly URLs for your webpage as it improves crawling. In SEO, shorter URLs containing targeted keywords usually perform better.
Body Tags (H1, H2, H3, H4, etc.): You can use body tags to break up your content into paragraphs to make it easier to read.
Keyword Density: You should include relevant keywords in your content but avoid excessively repeating or overusing keywords.
Image: You can use relevant images within your content to make your page visually more appealing and thus can improve the SEO of your site.
Internal Linking: You can place links to your other web pages to enhance your website. It enhances navigation and crawling.
Off page SEO: It means optimizing your websites through backlinks, social media promotion, blog submission, press releases submission, etc.
Main aspects of Off page SEO are:
Social Networking Sites: There are many social networking sites such as Facebook, LinkedIn, Twitter, etc., where you can create your business page and perform similar tasks to improve the SEO of your site.
Blogging: You can write a blog for your website, product or service and submit it to niche blog directories, and blog search engines.
Forum Marketing: You can find online forums related to your site and interact with them by replying to threads, answering questions, offering advice and more.
Social Bookmarking: You can submit your blog posts and pages to the relevant and popular bookmarking sites like Digg, Delicious, Reddit, etc.
Link building: You can build external links to your site to bypass your competitors and improve your rank.
Press Release Submission: You can distribute your press release across various media to get authority backlinks and convey information to the public. It can bring your site on the first page for your keywords.
4) What are the basic tools required for SEO?
Google webmaster tools, Google Analytics, Open site explorer, Alexa, Website grader are some of the free and basic tools which are commonly used for SEO. However, there are also many paid tools like Seo Moz, spydermate, bulkdachecker, readily available in the market.
Google webmaster tools: It is one of the most useful SEO tools. It is designed for the webmasters. It helps webmasters communicate with Google and evaluate and maintain their website’s performance in search engine results. Using webmaster, one can identify the issues related to a website such as crawling errors, malware issues, etc. It is a free service offered by Google, anyone who has a site can use it.
Google analytics: It is a free Web analytics service offered by Google. It is designed to provide analytical and statistical tools for SEO and digital marketing. It enables you to analyze website traffic and other activities that take place on your website. Anyone who has a Google account can use this service.
Open site explorer: It is a Mozscape index-powered workhorse which is designed to research backlinks, find link-building opportunities and find out links that may impact rank badly.
Alexa: It is a global ranking system that compiles a list of most popular websites based on the web traffic data and accordingly provides Alexa Rank to a website. The lower the Alexa rank, the more popular a website, e.g., a site with rank 150 will have more visitors than a site with rank 160.
Website grader: It is a free online tool designed to grade a website against some critical metrics like performance, SEO, security and mobile readiness.
Some Paid SEO Tools:
SEOMoz: It is a premium SEO web application designed for SEO. It provides analytics and insights to improve your search engine rankings. It is a collection of various SEO tools that cover all vital areas of SEO.
Spyder Mate: This software allows you to improve the ranking of your website as well as offers various methods to promote a website. It enables you to manage your web portal to attract more and more traffic to your site.
Bulkdachecker: It is used to check the Domain Authority of Multiple Websites simultaneously.
5) What is the difference between On Page SEO and Off Page SEO?
In On Page SEO, optimization is done on the website that involves making changes in the title tag, meta tags, site structure, site content, solving canonicalization problem, managing robots.txt, etc. Whereas, in off page SEO, the primary focus is on building backlinks and social media promotion.
On page SEO techniques:
It mainly involves optimizing the page elements such as:
Page Title
Page description
Canonical URL
Open Graph Tags
Page Headers and Sub-Headers
Paragraph Text
Alt Image Tags
Internal and External Links
Off page SEO techniques:
It mainly focuses on the following methods:
Link Building
Blogging
Social Media
Press Release Submission
6) Tell the names of some Off page SEO techniques?
There are several Off page SEO techniques such as:
Directory Submission: You can submit your site to a particular category of a web directory, e.g., if you are offering online tutorials, you should submit your site to the education category of a web directory. It will help you build more backlinks.
Social Bookmarking: It enables you to store your links on bookmarking sites. These links serve as backlinks and thus helps improve the SEO of your website.
RSS (Really Simple Syndication) Submission: It allows you to submit RSS feeds to RSS submission directory sites to improve SEO of your site.
Article Posting: It enables you to submit articles to popular article submission directories. It gives you backlinks and improves the page-rank of your website or blog. You are required to submit articles in relevant categories for better results.
Blog Posting: It allows you to post blogs and thus you can offer fresh content to your users on a regular basis. Blogs help convert prospects into actual customers.
Press Release Submission: You can write a press release about new events, products, and services of your company and submit it to PR sites.
Forum Posting: It enables you to build quality inbound links by participating in online discussion forums.
7) What is Google?
It is an American multinational company which specializes in Internet-based products and services. Its services include a search engine, online advertising, cloud computing, software and more.
8) What do you understand by a search engine?
A search engine is a web-based software program that is developed to search and find information on the World Wide Web. It enables internet users to search the information via the World Wide Web (WWW). The user is required to enter keywords or phrases into the search engines and then search engine searches websites, web pages or documents containing the similar keywords and presents a list of web pages with same keywords in the search engine result pages.
We can say that it generally answers the queries entered by the users in the form of a list of search results. So, it is a web-based tool that enables us to find information on the World Wide Web. Some of the popular search engines are Google, Bing, and Yahoo.
9) Who invented the Google?
It is co-founded in 1998 by Larry Page, an American computer scientist and internet entrepreneur, and Sergey Brin who is also an American computer scientist and internet entrepreneur.
10) What is a SERP (Search Engine Result Page)?
A search engine result page is the list of results for a user’s search query and is displayed by the search engine. It is displayed in a browser window when the users enter their search queries in the search field on a search engine page.
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The list of results generally contains a list of links to web pages that are ranked from the most popular to the least popular. Furthermore, the links also contain the title and a short description of their web pages. Furthermore, SERP not only provides the list of search results, but it may also include advertisements.
11) How does a search engine work?
To understand, how a search engine works, we can divide the work of search engines into three different stages: crawling, indexing, and retrieval.
Crawling: It is performed by software robots called web spiders or web crawlers. Each search engine has its web spiders to perform crawling. In this step, the spiders visit websites or web pages and read them and follow the links to other web pages of the site. Thus by crawling, they can find out what is published on the World Wide Web. Once the crawler visits a page, it makes a copy of that page and adds its URL to the index.
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The web spider generally starts crawling with heavily used servers and popular web pages. It follows the route determined by the link structure and finds new interconnected documents through new links. It also revisits the previous sites to check for the changes or updates in the web pages. If changes are found, it makes a copy of the changes to update the index.
Indexing: It involves building an index after crawling all websites or web pages found on the World Wide Web. An index of the crawled sites is made based on the type and quality of information provided by them and stored in huge storage facilities. It is like a book that contains a copy of each webpage crawled by the spider. Thus, it collects and organizes the information from all over the internet.
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Retrieval: In this step, the search engine responds to the search queries made by the users by providing a list of websites with relevant answers or information in a particular order. It keeps the relevant websites, which offer unique and original information, on the top of the search engine result pages. So, whenever, a user performs an online search, the search engine searches its database for the websites or web pages with relevant information and make a list of these sites based on their relevancy and present this list to the users on the search engine result pages.
SEO Interview Questions
12) What is the usage of an anchor tag in SEO?
The anchor tag is used to make click-able text written on a hyperlink, i.e., it is a clickable text in a hyperlink. It enhances the user experience as it takes the users directly to a specific area of a webpage. They are not required to scroll down the information to find a particular section. So, it is a way to improve navigation.
It also enables webmasters to keep things in order as there is no need of creating different web pages or splitting up a document. Google also sends users to a specific part of your page using this tag. You can attach anchor tag to a word or a phrase. It takes the reader down to a different section of the page instead of another page. When you use this tag, you create a unique URL on the same page.
13) What are some techniques of Black Hat SEO?
Keyword Stuffing: The search engines study the keywords included in a webpage to index the webpage or a site. So, some people increase the keyword density in their web pages to get a higher ranking. Keywords should be 2 to 4 % of the total world count, increasing keyword density beyond this is known as black hat SEO as it is against the SEO guidelines of Google.
Cloaking: In this technique, the web pages are coded are in such a way that visitors see different content in a webpage and search engines see different content on the same webpage. Increasing ranking in this way is also against the guidelines of search engine.
Doorway pages: These pages are rich in keywords and do not have quality content and relevant information. They redirect users to a different page to increase the ranking of that page. It is also against the guidelines of Google.
Hidden Text: It is the text that can be viewed by the search engine, but visitors cannot view. It is used to include irrelevant keywords and hide text or links to increase the keyword density and improve the internal link structure.
Article Spinning: It refers to rewriting an article multiple times to produce its different copies in such a way that each copy looks different from other copies and is treated as a new article.
Duplicate Content: It is the content that is copied from one site and uploaded to another site. It is known as plagiarism.
14) Which type of website is good for SEO purpose?
A website made on flash. or
A website made on HTML 5.
The content presented in a flash website is hard to parse by search engines, so, it is always preferred to build a website in HTML for better SEO prospective.
15) Which are the most important areas to include your keyword for the SEO purpose?
Page title, H1, Body text or content, Meta title, Meta description, Anchor links and Image Alt Tags are some of the most important areas where we can include our keywords for the SEO purpose.
16) What do you mean by Spider?
Many search engines use programs called spiders to index websites. The spiders are also known as crawlers or robots. They act as automatic date searching tools that visit every site to find new or updated web pages and links. This process is called web crawling. Spiders follow hyperlinks and gather textual and meta information for the search engine databases. They collect as much information as they can before relaying to the server of the search engine.
Spiders may also rate the content being indexed to help the search engine determine relevancy levels to a search. They are called spiders as they visit many sites simultaneously, i.e. their legs keep spanning a large area of the web. All search engines use spiders to revise and build their indexes.
17) What is webmaster tool in SEO?
A webmaster is a free service by Google which provides free Indexing data, backlinks information, crawl errors, search queries, CTR, website malware errors and submits the XML sitemap. It is a collection of SEO tools that allow you to control your site in Google as well as allows Google to communicate with webmasters. For example, if anything goes wrong like crawling mistakes, plenty of 404 pages, manual penalties, and malware identified, Google will speak to you through this tool. If you use GWT, you don’t need to use some other costlier tools. So, it is a free toolset that helps you understand what is going on with your site by providing useful information about your site.
18) What are Meta Tags?
Meta tags are the HTML tags that are used to provide information about the content of a webpage. They are the basic elements of SEO. Meta tags are incorporated in the “head” section of HTML, e.g. Meta tags are placed here.
The Meta tags are of three types. Each tag provides specific information about the content of the page. For example:
Title Tag: It is the most important of all the Meta tags. It tells search engines about the title your webpage, and it is displayed in search engine listings above the URL of your webpage or website. For example: Title text
Description Meta tag: The summary of your site or webpage is incorporated in this tag. It enables the search engine to display a brief description of your page in the SERPs. Through this tag, you tell users what your site is all about and what you are offering. For example:
Keywords Meta tag: In this tag, you place all of your main keywords and phrases that describe the content of your webpage. For example:
19) Why is the title tag valuable?
A title tag is an HTML element that is used to specify the title of a page. It is displayed on search engine result pages as a clickable heading just above the URL and at the top of the browser.
In SEO, the title tag is significant. It is highly recommended to include a unique and relevant title that correctly describes the content of a webpage or a website. Thus, it tells the users and search engines about the nature or type of information contained in your webpage.
An ideal title should be between 50 and 60 characters long. You can also place your primary keywords at the start of your title and put the least important keywords at the end. It is the first thing that a search engine analyzes before ranking your webpage.
20) Does Google use the keyword meta tags?
No, Google does not use the keyword meta tags in web search rankings. It is believed that Google ignores the meta tags keywords due to their misuse.
21) What is cloaking?
Cloaking is a black hat SEO technique that enables you to create two different pages. One page is designed for the users, and the other is created for the search engine crawlers. It is used to present different information to the user than what is presented to the crawlers. Cloaking is against the guidelines of Google, as it provides users with different information than they expected. So, it should not be used to improve the SEO of your site.
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Some Examples of Cloaking:
Presenting a page of HTML text to search engines and showing a page of images or flash to visitors
Including text or keywords into a page only when it is requested by the search engine, not by a human visitor
22) Is HTML case-sensitive or case-insensitive?
HTML is a case-insensitive language because uppercase or lowercase does not matter in this language and you can write your code in any case. However, HTML coding is generally written in lower case.
23) What is the difference between SEO and SEM?
SEO: It is a process of increasing the online visibility, organic (free) traffic or visitors to a website. It is all about optimizing your website to achieve higher rankings in the search result pages. It is a part of SEM, and it gives you only the organic traffic.
Two types:
On-Page SEO: It deals with the optimization of a website for maximum visibility in the search engines.
Off-Page SEO: It deals with gaining natural backlinks from other websites.
SEM: It stands for search engine marketing. It involves purchasing space on the search engine result page. It goes beyond SEO and involves various methods that can get you more traffic like PPC advertising. It is a part of your overall internet marketing strategy. The traffic generated through SEM is considered the most important as it is targeted.
SEM includes both SEO and paid search. It generally makes use of paid searches such as pay per click (PPC) listings and advertisements. Search ad networks generally follow pay-per-click (PPC) payment structure. It means you only pay when a visitor clicks on your advertisement.
24) What are the tools used in SEO?
Google webmaster tools: Google webmaster tool is a free SEO tool offered by Google. It is a set of SEO tools that allow you to control your website. It informs you if anything goes wrong with your website like crawling mistakes, plenty of 404 pages, malware issues, manual penalties, etc. In other words, Google communicates with webmasters through this tool. You also do not need to use most of the expensive SEO tools if you are using this tool.
Google Analytics: It is a freemium web analytics service offered by Google. It provides the detailed statistics of the website traffic. It was introduced in November 2005 to track and report website traffic. It is a set of statistics and analytical tools that monitor the performance of your site. It tells you about your visitors and their activities, dwell-time metrics, search terms or incoming keywords and more.
Open site explorer: This tool provides stats such as overall link counts and the count of domains that are linked to a URL including the anchor text distribution.
Alexa: It is a ranking system that ranks the websites by web traffic data. The lower the Alexa rank, the more will be the traffic.
Website grader: It is a free SEO tool that grades the websites on some key metrics such as security, mobile readiness, performance, and SEO.
Google Keyword Planner: This tool of Google comes with many features. It gives you an estimation of traffic for your target keywords and suggests keywords with high traffic. Thus, you can shortlist the relevant keywords from the list of keywords offered by this tool.
Plagiarism Checker: There are various tools to check the plagiarized content such as smallseotools.com, plagiarisma.net and more. Using these tools, you can avoid duplicate content and upload the unique or original content on your site.
25) What are the limitations of the title and description tags?
The title tag should be between 66-70 characters as the Google generally displays the first 50to 60 characters of the title tag. So, if your title is under 60 characters, there are more chances that your title is displayed properly. Similarly, the Meta description tag should be between 160-170 characters as the search engines tend to truncate descriptions longer than 160 characters.
26) What methods should you use to decrease the loading time of a website?
We should follow the following instructions to decrease the loading time of a website:
Optimize images: You can optimize images and decrease the file size without affecting the quality of that image. You can use the external picture tools to resize your images such as the Photoshop, picresize.com and more. Furthermore, use fewer images (avoid them unless necessary).
Use browser caching: Caching involves temporary storages of web pages that helps reduce bandwidth and improve performance. When a visitor visits your site, the cached version is presented that saves the server’s time and loads pages faster. So, use browser caching to make the process easier and faster for your repeat visitors.
Use content delivery network: It allows you to distribute your site across several servers in different geographical areas. When visitors request to visit your site, they will get the data from the server closest to them. The closer a server, the more quickly it loads.
Avoid self-hosted videos: Video files are usually large, so if you upload them to your web pages it can increase their loading time. You can use other video services like Youtube, Vimeo, etc.
Use CSS sprites to reduce HTTP request: It allows you to combine some images within a single image file by implementing CSS positioning of background. It helps you to save your server bandwidth and thus loading time of the webpage decreases gradually.
27) Which tool should be preferred between Webmaster and Analytics?
Webmaster tool should be preferred over Analytics tool because it includes almost all essential tools as well as some analytics data for the search engine optimization. But now due to the inclusion of webmaster data in Analytics, we would like to have access to Analytics.
28) What is the main usage of search engine spiders?
A spider is a program used by search engines to index websites. It is also called a crawler or search engine robot. The main usage of search engine spiders is to index sites. It visits the websites and read their pages and creates entries for the search engine index. They act as data searching tools that visit websites to find new or updated content or pages and links.
Spiders do not monitor sites for unethical activities. They are called spiders as they visit many sites simultaneously, i.e., they keep spanning a large area of the web. All search engines use spiders to build and update their indexes.
29) When is reinclusion applied in a search engine’s index?
If your website is banned by the search engines for using black hat practices and you have corrected the wrongdoings, you can apply for reinclusion. So, it is a process in which you ask the search engine to re-index your site that was penalized for using black hat SEO techniques. Google, Yahoo, and other search engines offer tools where webmasters can submit their site for reinclusion.
30) What is robot.txt?
Robots.txt is a text file that gives instructions to the search engine crawlers about the indexing of a webpage, domain, directory or a file of a website. It is generally used to tell spiders about the pages that you don’t want to be crawled. It is not mandatory for search engines, yet search engine spiders follow the instructions of the robots.txt.
The location of this file is very significant. It must be located in the main directory otherwise the spiders will not be able to find it as they do not search the whole site for a file named robots.txt. They only check the main directory for these files, and if they don’t find the files in the main directory, they assume that the site does not have any robots.txt file and index the whole site.
31) What is keyword proximity?
Keyword proximity refers to the distance between the keywords, i.e., it tells how close keywords are to each other in a phrase or body of text. It is used to measure the distance between two keywords in the text. It is used by some search engines to measure the relevancy of a given page to the search request. It specifies that the closer the two keywords in a phrase or a search term, the more relevant will be the phrase. For example, see the keywords “Delhi Digital Photographer” in the search term “Delhi Photographer Ram Kumar specialized in digital photography.” The proximity between Delhi and Photographer is excellent, but between the “Photographer” and “digital” proximity is not good as there are four words between them. So, a search term’s keywords should be as close to each other as possible.
32) What is an URL?
URL stands for Uniform Resource Locator (URL). It is the web address of an online resource like a website, webpage or a document on the internet. It tells the location and name of the resource as well as the protocol used to access it, i.e., it locates an existing resource on the internet. A URL may contain as many as six parts, and cannot have less than two parts. For example, http://www.example.com, in this URL we have two parts: a protocol (http) and a domain (www.example.com).
A URL for HTTP or HTTPS generally comprises three or four components, such as:
Protocol: It is used to access the resource on the internet. It can be HTTP, without SSL or HTTPS with SSL. It is connected to the domain name, and the domain name is further connected to the file path.
Domain name: It is a unique name that identifies a website on the internet. For example, “javatpoint.com”. It always includes a top-level domain (TLD) which is “.com” in this example.
Port: It is a port number, which is usually not visible in a URL, but it is always required. When visible, it comes after the TLD, separated by a colon.
Path: It is a file or directory on the web server, e.g. “/seo-interview-question” in the URL https://www.javatpoint.com/seo-interview-questionsis a path.
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33) How are the words in a URL separated?
We use hyphens to separates the words in a URL. See the image:
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34) What is a domain name?
A domain name is the name of your website. It identifies one or more IP addresses, e.g., the IP address of domain name “google.com” is “74.125.127.147”. Domain names are developed as it is easy to remember a name rather than a long string of numbers.
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A domain is displayed on the address bar of the web browser and may consist of any combination of letters and numbers and can be used with various domain name extensions such as .com, .net and more. Domain name is always unique, i.e., no two websites can have the same domain name.
35) What is a TLD?
A TLD is the last part of an Internet address. For example, in xyz.com the TLD is .com.
36) What is ccTLD?
A ccTLD is a country code top-level domain extension that is assigned to a country. It is based on the ISO 3166-1 alpha-2 country codes, which means it can have only two characters, e.g., .us for the United States, .au for Australia, .in for India. So these domain extensions are reserved for countries. See the image given below:
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37) What is an internal link?
An internal link is a URL link placed on your website that points to your another webpage. It is different from an external link which leads to another website. Internal links are very useful regarding SEO as they:
Provide site structure: The internal links of a website helps search engines to crawl and index your website. Search engine crawlers or robots use internal links to evaluate your website and are better informed while ranking your website on search engine result pages.
Enhance user experience: The internal links in product pages, blog posts, contact us forms, etc., enhance users’ website experience. Furthermore, these links can be used to take prospects to your core pages to convert them into customers.
Minimize bounce rate: The internal links keeps visitors on your website for longer and thus helps reduce bounce rate and increases the likelihood of them buying your products or services.
38) Why are backlinks important?
The backlinks are an indication of the popularity of a website. They are important for SEO as most of the search engines like Google give more value to websites that have a large number of quality backlinks, i.e., a site with more backlinks is considered more relevant than a site with fewer backlinks.
The backlinks should be relevant which means they should come from the sites that have content related to your site or pages otherwise the links if they are coming from sites that have different content, will be treated as irrelevant backlinks by the Search Engine. For example, there is a website about how to rescue orphaned dogs, and it receives a backlink from a website about dog care essentials then this would be a relevant backlink in a search engine assessment than a like from site about automobiles.
39) What is the difference between an inbound link and an outbound link in SEO?
An inbound link, which is also known as a backlink, is the incoming link to your site from an external source. It comes from an external site to your site. Whereas, outbound link is a link that starts from your site and points to another website. For example, if xyz.com links to your domain, this link from xyz.com is an inbound or backlink for your domain. However, it is an outbound link for xyz.com. See the image given below:
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40) What is link popularity?
Link popularity refers to the number of backlinks that point towards a website. The backlinks can be of two types: internal and external links. The links to a website from its pages are called internal links and the links from outside sources or other websites are called external links.
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The high link popularity indicates that more people are connected to your site, and it has relevant information. Most of the search engines use link popularity in its algorithm while ranking websites in the SERPs. For example, if two websites have the same level of SEO, the site with higher link popularity will be higher than another site by the search engine.
41) What are contextual backlinks?
Contextual backlinks are the links to external websites that are placed within the content of a web page, i.e., they are part of the content of a page. They are generally built from high authority web pages. These links can be used to build your keyword ranking higher in Search Engines and to increase the domain trust online. See the image:
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42) What do you understand by crawling?
Crawling refers to an automated process that enables search engines to visit web pages and gather URLs for indexing. When the crawler visits a page, it makes a copy of that page and adds its URL to the index which is called indexing. The search engines have software robots, which are known as web spiders or web crawlers, for crawling.
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The crawler not only reads the pages but also follows the internal and external links. Thus, they can find out what is published on the World Wide Web. The crawlers also revisit the previous sites to check for the changes or updates in their web pages. If changes are found, it updates the index accordingly.
43) What is indexing?
Indexing starts after crawling. It is a process of building an index by adding URLs of web pages crawled by the crawlers. An index is a place where all the data that has been crawled is stored, i.e., it is like a huge book with a copy of each page that is crawled. Whenever users enter search queries, it is the index that provides the results for search queries within seconds. Without an index, it won’t be possible for a search engine to render search results so fast.
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So, the index is made of URLs of different web pages visited by the crawler. The information contained in the web pages is provided by the search engines to users for their queries. If a page is not added to the index, it can’t be viewed by the users.
44) What is the World Wide Web?
The World Wide Web is a like a huge book whose pages are located on multiple servers present throughout the world. These web pages contain information and are connected by links called “hypertext.” In a book, we move from one page to another in a sequence, but in World Wide Web, we have to follow hypertext links to visit the desired page.
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So, it is a network of internet servers containing information in the form of web pages, audios, videos, etc. These web pages are formatted in HTML and accessed via HTTP.
World Wide Web was designed by Tim Berners-Lee in 1991. It is different from the internet which is a network connection used to access the World Wide Web.
45) What is a web page?
A web page is what you see on the screen of a computer or mobile when you type a web address or click on a link or enter a query in a search engine like Google, Bing, etc. A web page typically contains information that may include text, graphics, images, animation, sound, video, etc. See the image given below:
46) What is a website or what do you understand by a website?
A website is a collection of interlinked web pages or formatted documents that share a single domain and can be accessed over the internet. It may contain only one page or tens of thousands of pages and can be created by an individual, group, or an organization, etc. It is identified by a domain name or web address. For example, when you type the web address over the internet, you will arrive at the home page of that website.
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47) What is Web Hosting?
A service that provides space for websites or web pages on special computers called servers. A web hosting enables sites or web pages to be viewed on the internet by the internet users. When users type the website address (domain name) into their browser, their computers connect to the server, and your web pages are delivered to them through a browser.
48) What is a web server?
It is a computer program that is designed to serve or deliver the web pages to users in response to their queries or requests made by their computers or HTTP clients. In other words, it hosts websites on the internet. It uses HTTP (Hypertext Transfer Protocol) to serve pages to computers that are connected to it. See the image given below for more clarification!
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