問題文
A site wants the work of building a server process to be finished before the requests arrive. Which statement describes what such a pool of ready processes depends upon and what watches over it?
選択肢
- The pool can be filled in advance for whichever method of handing out server processes the site has chosen, and the listener watches the waiting members, so a later request skips the whole of process creation and is answered by a member at once.
- The pool can be filled in advance where the broker method of handing out servers is in use and nowhere else, and a process manager watches the members, so a later request skips the middle steps of creation and performs the last one of the steps alone.
- The pool is filled by the same background process that later watches it, and the parameter file settles how many members it holds, so a later request waits for the pool to grow whenever every member is busy with earlier work.
- The pool is filled with shared server processes rather than with dedicated ones, and a queue in front of it settles the order of service, so a later request is taken up by whichever member finishes its earlier work first.