Which of the following is not true regarding the history of social networking sites?
A) SixDegrees was shut down in 2001, before the rise of more famous social networking sites.
B) MySpace was the dominant network for a few years, but Facebook overtook MySpace in 2008.
C) Facebook has over three-fourths of the eligible U.S. population on the site, and has had its rise to fame documented in the movie The Social Network.
D) Friendster, Xanga, Hi5, and MySpace were among the social networking sites that enjoyed popularity.
C
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Many Web browsers now include _______ tools to allow page designers totrack each style back to its source.
A. designer B. planner C. developer D. creator
The transactions T and U are run with timestamp ordering concurrency control. Describe the information written to the log file on behalf of T and U, allowing for the fact that U has a later timestamp than T and must wait to commit after T. Why is it essential that the commit entries in the log file should be ordered by timestamps? Describe the effect of recovery if the server crashes (i) between the two Commits and (ii) after both of them.
What are the advantages and disadvantages of early writing with timestamp ordering?
The embed element displays a player on the Web page where the element is inserted
Indicate whether the statement is true or false
The ____________ aims to create opportunities for accelerated research and development of HIT, improve usefulness of HIT and remote healthcare, and develop the security of HIT
a. Office of the National Coordinator for Health Information Technology b. National Institute of Standards and Technology c. American Recovery and Reinvestment Act d. None of the above