4 _RPC connectors and message queues are mechanisms for Message retrieving Message passing Message delivering Message Sync-ing OOOO 1 1 5 The capability of a syster to adapt the increased service load is called capacity scalability tolerance availability 1 1 6 An architecture that move client's query to a middle tier so that stateless clients can be used is called Peer-to-peer architecture two-tier architecture Three-tier architecture Client/Server architecture The transparency that enables accessing local and remote resources using identical operations is called Access transparency Concurrency transparency Performance transparency Scaling transparency 1 8 ---_is used to capture the distributed computing vision as a utility Cluster computer Grid computing Cloud computing None of the mentioned 1