21. What is the term for the organic, non-paid results on a search engine results page?
a) Sponsored listings
b) Paid advertisements
c) Organic listings
d) Sponsored content
22. Which search engine is known for its distinctive doodles celebrating special occasions and anniversaries?
a) Bing
b) Yahoo
c) Google
d) DuckDuckGo
23. What is the term for the process of increasing the number of quality inbound links to a website?
a) Link building
b) Link indexing
c) Link analysis
d) Link exchange
24. Which search engine is the default search engine for Mozilla Firefox?
a) Bing
b) Google
c) Yahoo
d) DuckDuckGo
25. What is the term for the practice of optimizing individual web pages to rank higher and earn more relevant traffic in search engines?
a) On-page optimization
b) Off-page optimization
c) Black hat optimization
d) White hat optimization
