Final answer:
The two variants of RSS types are RSS 1.0 and RSS 2.0. RSS 1.0 uses RDF to structure content and is used by Semantic Web applications, while RSS 2.0 uses XML and is widely used for syndicating web content.
Step-by-step explanation:
The two variants of RSS types are RSS 1.0 and RSS 2.0.
RSS 1.0 (also known as RDF Site Summary or Rich Site Summary) is an older version of RSS that uses the Resource Description Framework (RDF) to structure and organize content. It is primarily used by Semantic Web applications to exchange data.
RSS 2.0 (also known as Really Simple Syndication) is a more popular and widely used version. It is simpler and easier to implement, making it the preferred choice for most web developers. RSS 2.0 uses XML to structure the content and is widely used for syndicating news articles, blog posts, podcasts, and other web content.