____________________ is a common data type that consists of an email address or a web address that links to a webpage on the Internet, for example.

Tweeters use many of the same ________ that have been used for decades in Internet chat rooms, instant messaging, and text messaging

A) acronyms B) vines C) lists D) hashtags

A file server uses caching, and achieves a hit rate of 80%. File operations in the server cost 5 ms of CPU time when the server finds the requested block in the cache, and take an additional 15 ms of disk I/O time otherwise. Explaining any assumptions you make, estimate the server’s throughput capacity (average requests/sec) if it is: i) single-threaded; ii) two-threaded, running on a single processor; iii) two-threaded, running on a two-processor computer.

What will be an ideal response?