Discussion
Assertion (A) : SMS is a web 2.0 tool.
Reason (R) : Libraries use it as a reference service tool.
Answer: A
The key gives Both (A) and (R) are true.
The library literature on Library 2.0 lists SMS (text messaging) among the interactive tools libraries use to reach users, alongside blogs, wikis, RSS and social networks, and the key follows that usage in accepting statement A. Strictly, SMS is a mobile messaging service that predates the web, but in library practice it is grouped with these tools because it supports two-way contact with users.
Statement R is true: many libraries run SMS reference services, in which users text a question and receive a short reply. On the key's reading both statements are true, which rules out the other options.
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