COMPUTER FUNDAMENTALS

COMPUTER NETWORKS AND COMMUNICATIONS

INTERNET AND WEB TECHNOLOGIES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the piece of software used by search engines to visit webpages to add them to the index?
A
Bug
B
Caterpillar
C
Spider
D
Worm
Explanation: 

Detailed explanation-1: -A web crawler, crawler or web spider, is a computer program that’s used to search and automatically index website content and other information over the internet. These programs, or bots, are most commonly used to create entries for a search engine index.

Detailed explanation-2: -Google Search is a fully-automated search engine that uses software known as web crawlers that explore the web regularly to find pages to add to our index.

Detailed explanation-3: -A search engine spider is a software crawler that is also referred to as a search engine bot or simply a bot. Search engine spiders indicate data marketers, HTML, broken links, orphan pages, important key terms that indicate a page’s topics, traffic coming to the site or individual pages and more.

Detailed explanation-4: -"Crawler” (sometimes also called a “robot” or “spider") is a generic term for any program that is used to automatically discover and scan websites by following links from one web page to another. Google’s main crawler is called Googlebot.

Detailed explanation-5: -Most of our Search index is built through the work of software known as crawlers. These automatically visit publicly accessible webpages and follow links on those pages, much like you would if you were browsing content on the web.

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