面试题与答案

Web crawling is the process where a web crawler (spiderbot/spider/crawler), an internet bot, browses the World Wide Web for web indexing. It uses hyperlinks to visit pages and copies them for processing and indexing by the search engine so that users on the Internet can search more quickly and efficiently.

Search engine submission is the process of submitting your website to search engines to ensure that it gets crawled and indexed. Even though search engines are smart enough to find your website and index it easily, it is advisable to follow through with the search engine submission as you will get the opportunity to submit some useful information about your website from your end, and the search engines will alert you if potential errors are there on your site.

SERP stands for search engine results page. This is the page where users see all the results of their queries on search engines.

Both organic and paid results are types of search results on SERP shown on the basis of quality and relevance to the user query. Organic results are not paid to show up on SERP. It is very hard to rank high organically, and it requires SEO.

Paid results require bidding on keywords, and based on the Max CPC (cost per click) and quality score, they are positioned above the organic search results on SERP, and these are paid advertisements. The more you score, the less money you need to pay.

On-page SEO is used to ensure that the website performance is improving and better by optimizing the meta tags and descriptions, page title, URL structure, keyword density, body tags, internal linking, images, etc.

Off-page SEO involves activities such as guest blogging, reverse guest blogging, press releases, social networking, etc. These are done away from the website to promote and increase the visibility of the same.

URL stands for Uniform Resource Locator. It is the complete address of a web page or a document on www. A URL contains the following parts:

• Protocol: A method used to process the URL (https, http, etc.)
• Domain: The domain name
• Path/File: The exact location of a page, file, other assets, etc.
• Query string: Parameters for dynamic data
• Hash: A specific section of a web page

URLs that are easily understandable by both search engines and users are SEO-friendly URLs. They will typically include keywords, and they are mostly self-explanatory and future-proof so that they will not become obsolete over the years).

Web hosting is the www equivalent of buying a property. Web hosting companies will provide you with space to build your website. The server will have to be connected to the Internet for this hosting purpose.

HTML header tags are used to highlight the headings (h1 level) and the subheadings (h2–h6 levels) within the content of a web page. These tags are also called header tags or heading tags. If you skip from h1 to h3, the hierarchy will be broken, and it is not advisable for on-page SEO. Every page should possess only one h1 tag unless it is using HTML5, which allows for more.

Meta titles (page titles) and meta descriptions are two different pieces of the HTML code, which are important when you are creating a web page. Much like the back-cover blurb of a book, these elements will tell users the title of the page they have landed on and will give them the summary of that page when it shows up on SERPs. This gives the users an idea of what your page is all about and whether it will be relevant for them to visit your website.

Internal links are hyperlinks that connect one web page to another web page in the same domain.

A well-planned internal linking structure can help users navigate the website without any confusion. It is a good practice to keep every important page within two–three clicks from the home page.

Inbound links are links coming from another domain to your domain.

Outbound links are links going out from your domain to another domain.

Keeping a few outbound links to high-authority sites may be helpful, but excessive outbound links could hurt your SEO.

Inbound links are also known as backlinks and are links coming from another domain to your domain.

Anchor texts are used by search engines to understand the context of the web page to which it is linking. The clickable text in a hyperlink is called anchor text.