A,B,C, or d please help  1.What can be used to ensure reasonable performance of a remote-service mechanism: A) direct memory access B) shared memory C) caching D) shared data  2. What approach improves the performance of distributed systems: A) symmetric clustering B) rendezvous C) load-balancing D) remote invocation   3.What is NOT a major reason to build a distributed system? A) computational speed-up B) security C) resource sharing D) reliability

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Types of database architectures

A Database Architecture represents the Database Management System’s (DBMS) design (schema). The DBMS architecture makes it easy to understand the components involved in the database system and their relations. The DBMS architecture may vary based on the system on which it runs. Some systems contain both client and server machines whereas some run only on a server machine. Based on the architecture, the system can be classified as centralized, decentralized, or hierarchical.