A systems administrator is tasked to add an existing user to an existing group on a local Linux system. Which of the following files should be edited to accomplish this task?

Each table in a database is stored as a separate file.

Answer the following statement true (T) or false (F)

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.