What is the extension of an RSS feed when it is published on the web?

What is the meaning of the word 'Syndication' in RSS terminology?

The mechanism of fetching a webpage and pulling out relevant parts
for an RSS feed is known as______.

An enclosure element in an RSS feed is shown below:
<enclosure url="http://www.expertrating.com/media/3d.wmv"
length="78645" type="video/wmv" />
The length attribute specifies the length of the enclosed file in
_________.

The peer-to-peer protocol that supports RSS is ________.

Which of the following is true about the <ttl> element of an RSS feed?

Which of the following attributes is mandatory for an <atom:link>
element in an RSS feed?

If a <guid> sub-element is included in an <item> element in your RSS
feed, which attribute must be set to "true" to consider guid as a url
that points to the full item described by the <item> element?