Sign up
Please tick the below box to proceed
I agree (or if I am under 13 my parent or guardian agrees on my behalf) to the terms and conditions of use and that:
- My test statistics may be published on the site leaderboard against my username
- My teacher(s) can review my test scores
- I can receive feedback on my tests from my teacher(s)
Please tick this box to proceed
Already have an account? Sign in
Preview lessons, content and tests
Computer Science & Programming solved. All in one platform.
1. To trial the platform and take tests, please take a few seconds to SIGN UP
and SET UP FREE.
2. Searching for something specific? See our text overview of all tests. Scroll right for levels, and lists.
Join 36000+ teachers and students using TTIO.
Search Engine Indexing
Search engines are answer machines. They exist to discover, understand, and organize the internet's content in order to offer the most relevant results to the questions searchers are asking.
How Search Engines work - (specifically Google)
Search engines have three primary functions:
- -Crawl: Scour the Internet for content, looking over the code/content for each URL they find.
- -Index: Store and organize the content found during the crawling process. Once a page is in the index, it’s in the running to be displayed as a result to relevant queries.
- -Rank: Provide the pieces of content that will best answer a searcher's query, which means that results are ordered by most relevant to least relevant.
What is a search engine index?
Search engines process and store information they find in an index, a huge database of all the content they’ve discovered and deem good enough to serve up to searchers.