A hard disk drive has a track density of 524,000 tpi and an area density of 29.7 Gbits/inch2. What is the density of bits along the track?
What will be an ideal response?
Imagine a square inch of the surface. That contains 29.7 Gbits. It also contains 524,000 tracks, so that each track contains 
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Suppose an ArrayList list contains {"red", "red", "green"}. What is the list after the following code?
``` String element = "red"; for (int i = list.size() - 1; i >= 0; i--) if (list.get(i).equals(element)) list.remove(element); ``` a. {"red", "red", "green"} b. {"red", "green"} c. {"green"} d. {}
Google is an example of a ________ search engine
A) chronological B) keyword C) metasearch D) subject-based
Which of the following is NOT true about microblogging?
A) With a typical microblogging service, registered users post short text messages or, in the case of Tumblr, individual photos. B) The only service microblogging offers is public message distribution. C) A microblog does not offer topic-based groups, one-to-one private messaging, or photo sharing. D) Microblogs offer many of the community features found on larger social network sites.
When saving a new database in Access 2007-2016 databases, the file extension should be ________
A) .dbx B) .adbx C) .accdb D) .db